dev-cpp-users Mailing List for Dev-C++ (Page 39)

Too little information given!

If the image is in any known image format (GIF, JPEG, TIFF, PCX, BMP, ...)
then you need to locate a graphics library that contains code to read that
format.

If the data is in a raw binary file or stored as ASCII, then you have to
write your own code.

There is no way anyone can help you, if you don't take your time and
clearly specify your problem!

/pwm

On Sat, 22 Dec 2007, Benson Mwangi wrote:

> Hello Everyone,
>
> Is anyone aware of how to read a greyscale image and convert it into a 2D
> array of 256 by 256 in C++.
>
> I would appreciate your contribution on this.
>
> Kind regards
> Benson.
>

Hello Everyone,

Is anyone aware of how to read a greyscale image and convert it into a 2D
array of 256 by 256 in C++.

I would appreciate your contribution on this.

Kind regards
Benson.

Yes, strdup() is a nice function to know. If doing the allocation on
program startup, you can normally ignore to release the memory. If doing
it in a loop or not needing the results when your function ends, then you
should do free() on all pointers returned from strdup().

Try to google for "man strdup".

/pwm

On Thu, 20 Dec 2007, Jessica Chen wrote:

> yep.. i will change 4096*256=1M part.  that is too big for saving serial
> port info.
>
> the function of strdup is equal to strlen() + malloc() + memcpy()?
> so, i don't need to do memalloc for strSerialList as what i did, since
> strdup() will do?
> is this a correct understanding?
>
>
>
> On Dec 20, 2007 9:23 AM, Per Westermark <pw...@ia...> wrote:
>
> > Now, you are preallocating 4096 bytes for 256 serial ports. That is 1MB of
> > memory. That is not something you want in production code.
> >
> > My change with strdup() would have performed a strlen() + an optimum-sized
> > malloc() + memcpy() for any detected serial ports, i.e. it will end up
> > needing at the most a couple of hundred bytes of memory for the names.
> >
> > /pwm
> >
> > On Thu, 20 Dec 2007, Jessica Chen wrote:
> >
> > > Hi, Per,
> > >
> > >   Thanks.  I asked my friend to see.  He gave me the suggestion.  The
> > > RegEnumValue can recognize the com and USB->COM.  The problem solved
> > now, I
> > > got the correct result: COM1(com), COM7(usb->com).  In front of
> > > RegEnumValue, add:
> > >        dwName = sizeof(Name);
> > >        dwSizeofPortName = sizeof(szPortName);
> > > So the whole code is as follows (a bug in it: didn't release memalloc,
> > but
> > > doesn't influence the result here).
> > >
> > > #include <windows.h>
> > > #include <stdio.h>
> > > #include <tchar.h>
> > >
> > > int main(void)
> > > {
> > >     int z;
> > >     char *strSerialList[256];
> > >         for (z=0; z<=256; z++)
> > >     {
> > >         strSerialList[z] = (char*)malloc(4096*sizeof(char));
> > >     }
> > >     HKEY hKey;
> > >
> > >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> > >                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> > >                      0,
> > >                      KEY_READ,
> > >                      &hKey) != ERROR_SUCCESS)
> > >     {
> > >         return -1;
> > >     }
> > >
> > >      int i=0;
> > >      CHAR Name[4096];
> > >      UCHAR szPortName[4096];
> > >      LONG Status;
> > >      DWORD dwIndex = 0;
> > >      DWORD dwName;
> > >      DWORD dwSizeofPortName;
> > >      DWORD Type;
> > >      dwName = sizeof(Name);
> > >      dwSizeofPortName = sizeof(szPortName);
> > >
> > >      do
> > >      {
> > >        dwName = sizeof(Name);
> > >        dwSizeofPortName = sizeof(szPortName);
> > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> > &Type,
> > >                           szPortName, &dwSizeofPortName);
> > >        printf("Name=%s,szPortName=%s  \n", Name, szPortName);
> > >        if((Status == ERROR_SUCCESS) )
> > >        {
> > >           strcpy(strSerialList[i],(char*)szPortName);
> > >           //strSerialList[i] = (char*) szPortName;
> > >           printf("%s  ",strSerialList[i]);
> > >           printf("i=%d,dwIndex=%d\n",i,dwIndex);
> > >           i++;
> > >        }
> > >     } while((Status == ERROR_SUCCESS) );
> > >     RegCloseKey(hKey);
> > >
> > >     printf("\n\n");
> > >     for(int j=0;j<i;j++)
> > >     {
> > >       printf("%s\n",strSerialList[j]);
> > >     }
> > >
> > >     return 0;
> > > }
> > >
> > >
> > >
> > > On Dec 19, 2007 6:02 PM, Per Westermark <pw...@ia...> wrote:
> > >
> > > > On an old test machine I have, the original code produces:
> > > > COM1
> > > > COM1
> > > > COM1
> > > > COM1
> > > > COM1
> > > > COM1
> > > >
> > > > After adding strdup(), I get:
> > > > COM5
> > > > COM6
> > > > COM7
> > > > COM7
> > > > COM4
> > > > COM1
> > > >
> > > > Are you sure that your change was correct, and that you remembered to
> > > > recompile?
> > > >
> > > > One interesting thing here is that COM7 is printed twice, while my
> > much
> > > > used COM3 is not enumerated.
> > > >
> > > > The two COM7 seems to be a stupid M$ bug with an USB serial adapter :(
> > > >
> > > > /pwm
> > > >
> > > > On Wed, 19 Dec 2007, Jessica Chen wrote:
> > > >
> > > > > Hi, Per,
> > > > >
> > > > >   for your second method, i modified like this.  i doesn't solve the
> > > > > problem.  the result is the same as before.
> > > > >   for the first method, i tried to change strSerialList[i] =
> > > > > (char*)(szPortName); to strSerialList[i] =
> > strdup((char*)(szPortName));,
> > > > but
> > > > > it seems doesn't work too.  :-(
> > > > >
> > > > > Regards,
> > > > > Jessica
> > > > >
> > > > >      do
> > > > >      {
> > > > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> > > > &Type,
> > > > >                           szPortName, &dwSizeofPortName);
> > > > >        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
> > > > >        {
> > > > >           strSerialList[i] = (char*)(szPortName);
> > > > >           printf("%s\n",strSerialList[i]);
> > > > >           i++;
> > > > >        }
> > > > >     } while((Status == ERROR_SUCCESS) || (Status ==
> > ERROR_MORE_DATA));
> > > > >     RegCloseKey(hKey);
> > > > >
> > > > > On Dec 19, 2007 2:44 PM, Per Westermark <pw...@ia...>
> > wrote:
> > > > >
> > > > > > The test code is buggy. It uses the same buffer to retrieve the
> > device
> > > > > > names, which means that the name will be overwritten.
> > > > > >
> > > > > > A quicky (with a memory leak that doesn't matter here) is to do
> > > > > > strSerialList[i] = strdup((char*)szPortName);
> > > > > >
> > > > > > Another alternative is to print the devices one-by-one directly
> > when
> > > > they
> > > > > > are found.
> > > > > >
> > > > > > /pwm
> > > > > >
> > > > > > On Wed, 19 Dec 2007, Jessica Chen wrote:
> > > > > >
> > > > > > > Name                      Type           Data
> > > > > > > (Default)                  REG_SZ     (value not set)
> > > > > > > \Device\Serial0        REG_SZ     COM1
> > > > > > > \Device\U2SPORT1 REG_SZ     COM7
> > > > > > >
> > > > > > > if i used on my computer, i can see:
> > > > > > > COM1
> > > > > > > COM1
> > > > > > >
> > > > i> > > when i used my .exe on my colleagues computer.
> > > > > > > he has 2 serial port and 1 usb->serial.
> > > > > > > but we can only see "COM4" for 3 times.
> > > > > > >
> > > > > > > so at least, the code can recognize how many COM on computer,
> > > > whatever
> > > > > > real
> > > > > > > com port or usb-com.
> > > > > > > but cannot read right com port number.
> > > > > > >
> > > > > > >
> > > > > > > On Dec 19, 2007 1:57 PM, Rafael Menezes <so...@gm...>
> > wrote:
> > > > > > >
> > > > > > > > Hi Jessica.
> > > > > > > >
> > > > > > > > Can you, for start, list what is on
> > > > "HARDWARE\\DEVICEMAP\\SERIALCOMM"
> > > > > > in
> > > > > > > > your computer?
> > > > > > > >
> > > > > > > > Regards
> > > > > > > > Rafael
> > > > > > > >
> > > > > > > >
> > > > > > > > On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> > > > > > > > >
> > > > > > > > > Hi, thanks for ur email, Rafael.
> > > > > > > > >
> > > > > > > > > I researched myself.
> > > > > > > > > I wrote a code.  I will list it as follows.
> > > > > > > > > The problem seems it can recognize the real serial com port
> > (Com
> > > > 1
> > > > > > in my
> > > > > > > > > computer, registry).
> > > > > > > > > But on my computer, I have a  USB->serial com port (Com 7 in
> > my
> > > > > > > > > computer, registry).
> > > > > > > > > The code cannot recognize the USB->serial com port.
> > > > > > > > > Is there any experienced persons can give any idea about
> > that?
> > > > > > > > >
> > > > > > > > > #include <windows.h>
> > > > > > > > > #include <stdio.h>
> > > > > > > > > #include <tchar.h>
> > > > > > > > >
> > > > > > > > > int main(void)
> > > > > > > > > {
> > > > > > > > >     char *strSerialList[256];
> > > > > > > > >     HKEY hKey;
> > > > > > > > >
> > > > > > > > >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> > > > > > > > >
> >  TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> > > > > > > > >                      0,
> > > > > > > > >                      KEY_READ,
> > > > > > > > >                      &hKey) != ERROR_SUCCESS)
> > > > > > > > >     {
> > > > > > > > >         return -1;
> > > > > > > > >     }
> > > > > > > > >
> > > > > > > > >      int i=0;
> > > > > > > > >      CHAR Name[25];
> > > > > > > > >      UCHAR szPortName[25];
> > > > > > > > >      LONG Status;
> > > > > > > > >      DWORD dwIndex = 0;
> > > > > > > > >      DWORD dwName;
> > > > > > > > >      DWORD dwSizeofPortName;
> > > > > > > > >      DWORD Type;
> > > > > > > > >      dwName = sizeof(Name);
> > > > > > > > >      dwSizeofPortName = sizeof(szPortName);
> > > > > > > > >
> > > > > > > > >      do
> > > > > > > > >      {
> > > > > > > > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName,
> > > > NULL,
> > > > > > > > > &Type,
> > > > > > > > >                           szPortName, &dwSizeofPortName);
> > > > > > > > >        if((Status == ERROR_SUCCESS) || (Status ==
> > > > ERROR_MORE_DATA))
> > > > > > > > >        {
> > > > > > > > >           strSerialList[i] = (char*)(szPortName);
> > > > > > > > >           i++;
> > > > > > > > >        }
> > > > > > > > >     } while((Status == ERROR_SUCCESS) || (Status ==
> > > > > > ERROR_MORE_DATA));
> > > > > > > > >     RegCloseKey(hKey);
> > > > > > > > >
> > > > > > > > >     for(int j=0;j<i;j++)
> > > > > > > > >     {
> > > > > > > > >       printf("%s\n",strSerialList[j]);
> > > > > > > > >     }
> > > > > > > > >
> > > > > > > > >     return 0;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...>
> > > > wrote:
> > > > > > > > >
> > > > > > > > > > You can send mails. Can you search on google?
> > > > > > > > > >
> > > > > > > > > >
> > > > http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta =
> > > > > > > > > >
> > > > > > > > > >
> > > > > >
> > > >
> > http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > > > > > > > > > =
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >  On 19/12/2007, Jessica Chen <jes...@gm... >
> > wrote:
> > > > > > > > > >
> > > > > > > > > > > is there anyone have the experience for writing code of
> > > > getting
> > > > > > the
> > > > > > > > > > > serial port info from windows?
> > > > > > > > > > > can u give me an sample code?
> > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > > >
> > > > > >
> > > >
> > -------------------------------------------------------------------------
> > > > > > > > > > >
> > > > > > > > > > > SF.Net email is sponsored by:
> > > > > > > > > > > Check out the new SourceForge.net Marketplace.
> > > > > > > > > > > It's the best place to buy or sell services
> > > > > > > > > > > for just about anything Open Source.
> > > > > > > > > > >
> > > > > >
> > > >
> > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > > > > > > > > > >
> > > > > > > > > > > _______________________________________________
> > > > > > > > > > > Dev-cpp-users mailing list
> > > > > > > > > > > Dev...@li...
> > > > > > > > > > > TO UNSUBSCRIBE:
> > > > http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > > > > > > > > >
> > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > --
> > > > > > > > > > Regards
> > > > > > > > > > Rafael Menezes
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > --
> > > > > > > > Regards
> > > > > > > > Rafael Menezes
> > > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > >
> >
> >
>

yep.. i will change 4096*256=1M part.  that is too big for saving serial
port info.

the function of strdup is equal to strlen() + malloc() + memcpy()?
so, i don't need to do memalloc for strSerialList as what i did, since
strdup() will do?
is this a correct understanding?



On Dec 20, 2007 9:23 AM, Per Westermark <pw...@ia...> wrote:

> Now, you are preallocating 4096 bytes for 256 serial ports. That is 1MB of
> memory. That is not something you want in production code.
>
> My change with strdup() would have performed a strlen() + an optimum-sized
> malloc() + memcpy() for any detected serial ports, i.e. it will end up
> needing at the most a couple of hundred bytes of memory for the names.
>
> /pwm
>
> On Thu, 20 Dec 2007, Jessica Chen wrote:
>
> > Hi, Per,
> >
> >   Thanks.  I asked my friend to see.  He gave me the suggestion.  The
> > RegEnumValue can recognize the com and USB->COM.  The problem solved
> now, I
> > got the correct result: COM1(com), COM7(usb->com).  In front of
> > RegEnumValue, add:
> >        dwName = sizeof(Name);
> >        dwSizeofPortName = sizeof(szPortName);
> > So the whole code is as follows (a bug in it: didn't release memalloc,
> but
> > doesn't influence the result here).
> >
> > #include <windows.h>
> > #include <stdio.h>
> > #include <tchar.h>
> >
> > int main(void)
> > {
> >     int z;
> >     char *strSerialList[256];
> >         for (z=0; z<=256; z++)
> >     {
> >         strSerialList[z] = (char*)malloc(4096*sizeof(char));
> >     }
> >     HKEY hKey;
> >
> >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> >                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> >                      0,
> >                      KEY_READ,
> >                      &hKey) != ERROR_SUCCESS)
> >     {
> >         return -1;
> >     }
> >
> >      int i=0;
> >      CHAR Name[4096];
> >      UCHAR szPortName[4096];
> >      LONG Status;
> >      DWORD dwIndex = 0;
> >      DWORD dwName;
> >      DWORD dwSizeofPortName;
> >      DWORD Type;
> >      dwName = sizeof(Name);
> >      dwSizeofPortName = sizeof(szPortName);
> >
> >      do
> >      {
> >        dwName = sizeof(Name);
> >        dwSizeofPortName = sizeof(szPortName);
> >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> &Type,
> >                           szPortName, &dwSizeofPortName);
> >        printf("Name=%s,szPortName=%s  \n", Name, szPortName);
> >        if((Status == ERROR_SUCCESS) )
> >        {
> >           strcpy(strSerialList[i],(char*)szPortName);
> >           //strSerialList[i] = (char*) szPortName;
> >           printf("%s  ",strSerialList[i]);
> >           printf("i=%d,dwIndex=%d\n",i,dwIndex);
> >           i++;
> >        }
> >     } while((Status == ERROR_SUCCESS) );
> >     RegCloseKey(hKey);
> >
> >     printf("\n\n");
> >     for(int j=0;j<i;j++)
> >     {
> >       printf("%s\n",strSerialList[j]);
> >     }
> >
> >     return 0;
> > }
> >
> >
> >
> > On Dec 19, 2007 6:02 PM, Per Westermark <pw...@ia...> wrote:
> >
> > > On an old test machine I have, the original code produces:
> > > COM1
> > > COM1
> > > COM1
> > > COM1
> > > COM1
> > > COM1
> > >
> > > After adding strdup(), I get:
> > > COM5
> > > COM6
> > > COM7
> > > COM7
> > > COM4
> > > COM1
> > >
> > > Are you sure that your change was correct, and that you remembered to
> > > recompile?
> > >
> > > One interesting thing here is that COM7 is printed twice, while my
> much
> > > used COM3 is not enumerated.
> > >
> > > The two COM7 seems to be a stupid M$ bug with an USB serial adapter :(
> > >
> > > /pwm
> > >
> > > On Wed, 19 Dec 2007, Jessica Chen wrote:
> > >
> > > > Hi, Per,
> > > >
> > > >   for your second method, i modified like this.  i doesn't solve the
> > > > problem.  the result is the same as before.
> > > >   for the first method, i tried to change strSerialList[i] =
> > > > (char*)(szPortName); to strSerialList[i] =
> strdup((char*)(szPortName));,
> > > but
> > > > it seems doesn't work too.  :-(
> > > >
> > > > Regards,
> > > > Jessica
> > > >
> > > >      do
> > > >      {
> > > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> > > &Type,
> > > >                           szPortName, &dwSizeofPortName);
> > > >        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
> > > >        {
> > > >           strSerialList[i] = (char*)(szPortName);
> > > >           printf("%s\n",strSerialList[i]);
> > > >           i++;
> > > >        }
> > > >     } while((Status == ERROR_SUCCESS) || (Status ==
> ERROR_MORE_DATA));
> > > >     RegCloseKey(hKey);
> > > >
> > > > On Dec 19, 2007 2:44 PM, Per Westermark <pw...@ia...>
> wrote:
> > > >
> > > > > The test code is buggy. It uses the same buffer to retrieve the
> device
> > > > > names, which means that the name will be overwritten.
> > > > >
> > > > > A quicky (with a memory leak that doesn't matter here) is to do
> > > > > strSerialList[i] = strdup((char*)szPortName);
> > > > >
> > > > > Another alternative is to print the devices one-by-one directly
> when
> > > they
> > > > > are found.
> > > > >
> > > > > /pwm
> > > > >
> > > > > On Wed, 19 Dec 2007, Jessica Chen wrote:
> > > > >
> > > > > > Name                      Type           Data
> > > > > > (Default)                  REG_SZ     (value not set)
> > > > > > \Device\Serial0        REG_SZ     COM1
> > > > > > \Device\U2SPORT1 REG_SZ     COM7
> > > > > >
> > > > > > if i used on my computer, i can see:
> > > > > > COM1
> > > > > > COM1
> > > > > >
> > > i> > > when i used my .exe on my colleagues computer.
> > > > > > he has 2 serial port and 1 usb->serial.
> > > > > > but we can only see "COM4" for 3 times.
> > > > > >
> > > > > > so at least, the code can recognize how many COM on computer,
> > > whatever
> > > > > real
> > > > > > com port or usb-com.
> > > > > > but cannot read right com port number.
> > > > > >
> > > > > >
> > > > > > On Dec 19, 2007 1:57 PM, Rafael Menezes <so...@gm...>
> wrote:
> > > > > >
> > > > > > > Hi Jessica.
> > > > > > >
> > > > > > > Can you, for start, list what is on
> > > "HARDWARE\\DEVICEMAP\\SERIALCOMM"
> > > > > in
> > > > > > > your computer?
> > > > > > >
> > > > > > > Regards
> > > > > > > Rafael
> > > > > > >
> > > > > > >
> > > > > > > On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> > > > > > > >
> > > > > > > > Hi, thanks for ur email, Rafael.
> > > > > > > >
> > > > > > > > I researched myself.
> > > > > > > > I wrote a code.  I will list it as follows.
> > > > > > > > The problem seems it can recognize the real serial com port
> (Com
> > > 1
> > > > > in my
> > > > > > > > computer, registry).
> > > > > > > > But on my computer, I have a  USB->serial com port (Com 7 in
> my
> > > > > > > > computer, registry).
> > > > > > > > The code cannot recognize the USB->serial com port.
> > > > > > > > Is there any experienced persons can give any idea about
> that?
> > > > > > > >
> > > > > > > > #include <windows.h>
> > > > > > > > #include <stdio.h>
> > > > > > > > #include <tchar.h>
> > > > > > > >
> > > > > > > > int main(void)
> > > > > > > > {
> > > > > > > >     char *strSerialList[256];
> > > > > > > >     HKEY hKey;
> > > > > > > >
> > > > > > > >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> > > > > > > >
>  TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> > > > > > > >                      0,
> > > > > > > >                      KEY_READ,
> > > > > > > >                      &hKey) != ERROR_SUCCESS)
> > > > > > > >     {
> > > > > > > >         return -1;
> > > > > > > >     }
> > > > > > > >
> > > > > > > >      int i=0;
> > > > > > > >      CHAR Name[25];
> > > > > > > >      UCHAR szPortName[25];
> > > > > > > >      LONG Status;
> > > > > > > >      DWORD dwIndex = 0;
> > > > > > > >      DWORD dwName;
> > > > > > > >      DWORD dwSizeofPortName;
> > > > > > > >      DWORD Type;
> > > > > > > >      dwName = sizeof(Name);
> > > > > > > >      dwSizeofPortName = sizeof(szPortName);
> > > > > > > >
> > > > > > > >      do
> > > > > > > >      {
> > > > > > > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName,
> > > NULL,
> > > > > > > > &Type,
> > > > > > > >                           szPortName, &dwSizeofPortName);
> > > > > > > >        if((Status == ERROR_SUCCESS) || (Status ==
> > > ERROR_MORE_DATA))
> > > > > > > >        {
> > > > > > > >           strSerialList[i] = (char*)(szPortName);
> > > > > > > >           i++;
> > > > > > > >        }
> > > > > > > >     } while((Status == ERROR_SUCCESS) || (Status ==
> > > > > ERROR_MORE_DATA));
> > > > > > > >     RegCloseKey(hKey);
> > > > > > > >
> > > > > > > >     for(int j=0;j<i;j++)
> > > > > > > >     {
> > > > > > > >       printf("%s\n",strSerialList[j]);
> > > > > > > >     }
> > > > > > > >
> > > > > > > >     return 0;
> > > > > > > > }
> > > > > > > >
> > > > > > > >
> > > > > > > > On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...>
> > > wrote:
> > > > > > > >
> > > > > > > > > You can send mails. Can you search on google?
> > > > > > > > >
> > > > > > > > >
> > > http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta =
> > > > > > > > >
> > > > > > > > >
> > > > >
> > >
> http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > > > > > > > > =
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >  On 19/12/2007, Jessica Chen <jes...@gm... >
> wrote:
> > > > > > > > >
> > > > > > > > > > is there anyone have the experience for writing code of
> > > getting
> > > > > the
> > > > > > > > > > serial port info from windows?
> > > > > > > > > > can u give me an sample code?
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > >
> > >
> -------------------------------------------------------------------------
> > > > > > > > > >
> > > > > > > > > > SF.Net email is sponsored by:
> > > > > > > > > > Check out the new SourceForge.net Marketplace.
> > > > > > > > > > It's the best place to buy or sell services
> > > > > > > > > > for just about anything Open Source.
> > > > > > > > > >
> > > > >
> > >
> http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > > > > > > > > >
> > > > > > > > > > _______________________________________________
> > > > > > > > > > Dev-cpp-users mailing list
> > > > > > > > > > Dev...@li...
> > > > > > > > > > TO UNSUBSCRIBE:
> > > http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > > > > > > > >
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > --
> > > > > > > > > Regards
> > > > > > > > > Rafael Menezes
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > > Regards
> > > > > > > Rafael Menezes
> > > > > >
> > > > >
> > > > >
> > > >
> > >
> > >
> >
>
>

Now, you are preallocating 4096 bytes for 256 serial ports. That is 1MB of
memory. That is not something you want in production code.

My change with strdup() would have performed a strlen() + an optimum-sized
malloc() + memcpy() for any detected serial ports, i.e. it will end up
needing at the most a couple of hundred bytes of memory for the names.

/pwm

On Thu, 20 Dec 2007, Jessica Chen wrote:

> Hi, Per,
>
>   Thanks.  I asked my friend to see.  He gave me the suggestion.  The
> RegEnumValue can recognize the com and USB->COM.  The problem solved now, I
> got the correct result: COM1(com), COM7(usb->com).  In front of
> RegEnumValue, add:
>        dwName = sizeof(Name);
>        dwSizeofPortName = sizeof(szPortName);
> So the whole code is as follows (a bug in it: didn't release memalloc, but
> doesn't influence the result here).
>
> #include <windows.h>
> #include <stdio.h>
> #include <tchar.h>
>
> int main(void)
> {
>     int z;
>     char *strSerialList[256];
>         for (z=0; z<=256; z++)
>     {
>         strSerialList[z] = (char*)malloc(4096*sizeof(char));
>     }
>     HKEY hKey;
>
>     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
>                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
>                      0,
>                      KEY_READ,
>                      &hKey) != ERROR_SUCCESS)
>     {
>         return -1;
>     }
>
>      int i=0;
>      CHAR Name[4096];
>      UCHAR szPortName[4096];
>      LONG Status;
>      DWORD dwIndex = 0;
>      DWORD dwName;
>      DWORD dwSizeofPortName;
>      DWORD Type;
>      dwName = sizeof(Name);
>      dwSizeofPortName = sizeof(szPortName);
>
>      do
>      {
>        dwName = sizeof(Name);
>        dwSizeofPortName = sizeof(szPortName);
>        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL, &Type,
>                           szPortName, &dwSizeofPortName);
>        printf("Name=%s,szPortName=%s  \n", Name, szPortName);
>        if((Status == ERROR_SUCCESS) )
>        {
>           strcpy(strSerialList[i],(char*)szPortName);
>           //strSerialList[i] = (char*) szPortName;
>           printf("%s  ",strSerialList[i]);
>           printf("i=%d,dwIndex=%d\n",i,dwIndex);
>           i++;
>        }
>     } while((Status == ERROR_SUCCESS) );
>     RegCloseKey(hKey);
>
>     printf("\n\n");
>     for(int j=0;j<i;j++)
>     {
>       printf("%s\n",strSerialList[j]);
>     }
>
>     return 0;
> }
>
>
>
> On Dec 19, 2007 6:02 PM, Per Westermark <pw...@ia...> wrote:
>
> > On an old test machine I have, the original code produces:
> > COM1
> > COM1
> > COM1
> > COM1
> > COM1
> > COM1
> >
> > After adding strdup(), I get:
> > COM5
> > COM6
> > COM7
> > COM7
> > COM4
> > COM1
> >
> > Are you sure that your change was correct, and that you remembered to
> > recompile?
> >
> > One interesting thing here is that COM7 is printed twice, while my much
> > used COM3 is not enumerated.
> >
> > The two COM7 seems to be a stupid M$ bug with an USB serial adapter :(
> >
> > /pwm
> >
> > On Wed, 19 Dec 2007, Jessica Chen wrote:
> >
> > > Hi, Per,
> > >
> > >   for your second method, i modified like this.  i doesn't solve the
> > > problem.  the result is the same as before.
> > >   for the first method, i tried to change strSerialList[i] =
> > > (char*)(szPortName); to strSerialList[i] = strdup((char*)(szPortName));,
> > but
> > > it seems doesn't work too.  :-(
> > >
> > > Regards,
> > > Jessica
> > >
> > >      do
> > >      {
> > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> > &Type,
> > >                           szPortName, &dwSizeofPortName);
> > >        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
> > >        {
> > >           strSerialList[i] = (char*)(szPortName);
> > >           printf("%s\n",strSerialList[i]);
> > >           i++;
> > >        }
> > >     } while((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA));
> > >     RegCloseKey(hKey);
> > >
> > > On Dec 19, 2007 2:44 PM, Per Westermark <pw...@ia...> wrote:
> > >
> > > > The test code is buggy. It uses the same buffer to retrieve the device
> > > > names, which means that the name will be overwritten.
> > > >
> > > > A quicky (with a memory leak that doesn't matter here) is to do
> > > > strSerialList[i] = strdup((char*)szPortName);
> > > >
> > > > Another alternative is to print the devices one-by-one directly when
> > they
> > > > are found.
> > > >
> > > > /pwm
> > > >
> > > > On Wed, 19 Dec 2007, Jessica Chen wrote:
> > > >
> > > > > Name                      Type           Data
> > > > > (Default)                  REG_SZ     (value not set)
> > > > > \Device\Serial0        REG_SZ     COM1
> > > > > \Device\U2SPORT1 REG_SZ     COM7
> > > > >
> > > > > if i used on my computer, i can see:
> > > > > COM1
> > > > > COM1
> > > > >
> > i> > > when i used my .exe on my colleagues computer.
> > > > > he has 2 serial port and 1 usb->serial.
> > > > > but we can only see "COM4" for 3 times.
> > > > >
> > > > > so at least, the code can recognize how many COM on computer,
> > whatever
> > > > real
> > > > > com port or usb-com.
> > > > > but cannot read right com port number.
> > > > >
> > > > >
> > > > > On Dec 19, 2007 1:57 PM, Rafael Menezes <so...@gm...> wrote:
> > > > >
> > > > > > Hi Jessica.
> > > > > >
> > > > > > Can you, for start, list what is on
> > "HARDWARE\\DEVICEMAP\\SERIALCOMM"
> > > > in
> > > > > > your computer?
> > > > > >
> > > > > > Regards
> > > > > > Rafael
> > > > > >
> > > > > >
> > > > > > On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> > > > > > >
> > > > > > > Hi, thanks for ur email, Rafael.
> > > > > > >
> > > > > > > I researched myself.
> > > > > > > I wrote a code.  I will list it as follows.
> > > > > > > The problem seems it can recognize the real serial com port (Com
> > 1
> > > > in my
> > > > > > > computer, registry).
> > > > > > > But on my computer, I have a  USB->serial com port (Com 7 in my
> > > > > > > computer, registry).
> > > > > > > The code cannot recognize the USB->serial com port.
> > > > > > > Is there any experienced persons can give any idea about that?
> > > > > > >
> > > > > > > #include <windows.h>
> > > > > > > #include <stdio.h>
> > > > > > > #include <tchar.h>
> > > > > > >
> > > > > > > int main(void)
> > > > > > > {
> > > > > > >     char *strSerialList[256];
> > > > > > >     HKEY hKey;
> > > > > > >
> > > > > > >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> > > > > > >                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> > > > > > >                      0,
> > > > > > >                      KEY_READ,
> > > > > > >                      &hKey) != ERROR_SUCCESS)
> > > > > > >     {
> > > > > > >         return -1;
> > > > > > >     }
> > > > > > >
> > > > > > >      int i=0;
> > > > > > >      CHAR Name[25];
> > > > > > >      UCHAR szPortName[25];
> > > > > > >      LONG Status;
> > > > > > >      DWORD dwIndex = 0;
> > > > > > >      DWORD dwName;
> > > > > > >      DWORD dwSizeofPortName;
> > > > > > >      DWORD Type;
> > > > > > >      dwName = sizeof(Name);
> > > > > > >      dwSizeofPortName = sizeof(szPortName);
> > > > > > >
> > > > > > >      do
> > > > > > >      {
> > > > > > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName,
> > NULL,
> > > > > > > &Type,
> > > > > > >                           szPortName, &dwSizeofPortName);
> > > > > > >        if((Status == ERROR_SUCCESS) || (Status ==
> > ERROR_MORE_DATA))
> > > > > > >        {
> > > > > > >           strSerialList[i] = (char*)(szPortName);
> > > > > > >           i++;
> > > > > > >        }
> > > > > > >     } while((Status == ERROR_SUCCESS) || (Status ==
> > > > ERROR_MORE_DATA));
> > > > > > >     RegCloseKey(hKey);
> > > > > > >
> > > > > > >     for(int j=0;j<i;j++)
> > > > > > >     {
> > > > > > >       printf("%s\n",strSerialList[j]);
> > > > > > >     }
> > > > > > >
> > > > > > >     return 0;
> > > > > > > }
> > > > > > >
> > > > > > >
> > > > > > > On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...>
> > wrote:
> > > > > > >
> > > > > > > > You can send mails. Can you search on google?
> > > > > > > >
> > > > > > > >
> > http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta =
> > > > > > > >
> > > > > > > >
> > > >
> > http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > > > > > > > =
> > > > > > > >
> > > > > > > >
> > > > > > > >  On 19/12/2007, Jessica Chen <jes...@gm... > wrote:
> > > > > > > >
> > > > > > > > > is there anyone have the experience for writing code of
> > getting
> > > > the
> > > > > > > > > serial port info from windows?
> > > > > > > > > can u give me an sample code?
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > >
> > -------------------------------------------------------------------------
> > > > > > > > >
> > > > > > > > > SF.Net email is sponsored by:
> > > > > > > > > Check out the new SourceForge.net Marketplace.
> > > > > > > > > It's the best place to buy or sell services
> > > > > > > > > for just about anything Open Source.
> > > > > > > > >
> > > >
> > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > > > > > > > >
> > > > > > > > > _______________________________________________
> > > > > > > > > Dev-cpp-users mailing list
> > > > > > > > > Dev...@li...
> > > > > > > > > TO UNSUBSCRIBE:
> > http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > > > > > > > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > --
> > > > > > > > Regards
> > > > > > > > Rafael Menezes
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Regards
> > > > > > Rafael Menezes
> > > > >
> > > >
> > > >
> > >
> >
> >
>

Hi, Per,

  Thanks.  I asked my friend to see.  He gave me the suggestion.  The
RegEnumValue can recognize the com and USB->COM.  The problem solved now, I
got the correct result: COM1(com), COM7(usb->com).  In front of
RegEnumValue, add:
       dwName = sizeof(Name);
       dwSizeofPortName = sizeof(szPortName);
So the whole code is as follows (a bug in it: didn't release memalloc, but
doesn't influence the result here).

#include <windows.h>
#include <stdio.h>
#include <tchar.h>

int main(void)
{
    int z;
    char *strSerialList[256];
        for (z=0; z<=256; z++)
    {
        strSerialList[z] = (char*)malloc(4096*sizeof(char));
    }
    HKEY hKey;

    if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
                     TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
                     0,
                     KEY_READ,
                     &hKey) != ERROR_SUCCESS)
    {
        return -1;
    }

     int i=0;
     CHAR Name[4096];
     UCHAR szPortName[4096];
     LONG Status;
     DWORD dwIndex = 0;
     DWORD dwName;
     DWORD dwSizeofPortName;
     DWORD Type;
     dwName = sizeof(Name);
     dwSizeofPortName = sizeof(szPortName);

     do
     {
       dwName = sizeof(Name);
       dwSizeofPortName = sizeof(szPortName);
       Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL, &Type,
                          szPortName, &dwSizeofPortName);
       printf("Name=%s,szPortName=%s  \n", Name, szPortName);
       if((Status == ERROR_SUCCESS) )
       {
          strcpy(strSerialList[i],(char*)szPortName);
          //strSerialList[i] = (char*) szPortName;
          printf("%s  ",strSerialList[i]);
          printf("i=%d,dwIndex=%d\n",i,dwIndex);
          i++;
       }
    } while((Status == ERROR_SUCCESS) );
    RegCloseKey(hKey);

    printf("\n\n");
    for(int j=0;j<i;j++)
    {
      printf("%s\n",strSerialList[j]);
    }

    return 0;
}



On Dec 19, 2007 6:02 PM, Per Westermark <pw...@ia...> wrote:

> On an old test machine I have, the original code produces:
> COM1
> COM1
> COM1
> COM1
> COM1
> COM1
>
> After adding strdup(), I get:
> COM5
> COM6
> COM7
> COM7
> COM4
> COM1
>
> Are you sure that your change was correct, and that you remembered to
> recompile?
>
> One interesting thing here is that COM7 is printed twice, while my much
> used COM3 is not enumerated.
>
> The two COM7 seems to be a stupid M$ bug with an USB serial adapter :(
>
> /pwm
>
> On Wed, 19 Dec 2007, Jessica Chen wrote:
>
> > Hi, Per,
> >
> >   for your second method, i modified like this.  i doesn't solve the
> > problem.  the result is the same as before.
> >   for the first method, i tried to change strSerialList[i] =
> > (char*)(szPortName); to strSerialList[i] = strdup((char*)(szPortName));,
> but
> > it seems doesn't work too.  :-(
> >
> > Regards,
> > Jessica
> >
> >      do
> >      {
> >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> &Type,
> >                           szPortName, &dwSizeofPortName);
> >        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
> >        {
> >           strSerialList[i] = (char*)(szPortName);
> >           printf("%s\n",strSerialList[i]);
> >           i++;
> >        }
> >     } while((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA));
> >     RegCloseKey(hKey);
> >
> > On Dec 19, 2007 2:44 PM, Per Westermark <pw...@ia...> wrote:
> >
> > > The test code is buggy. It uses the same buffer to retrieve the device
> > > names, which means that the name will be overwritten.
> > >
> > > A quicky (with a memory leak that doesn't matter here) is to do
> > > strSerialList[i] = strdup((char*)szPortName);
> > >
> > > Another alternative is to print the devices one-by-one directly when
> they
> > > are found.
> > >
> > > /pwm
> > >
> > > On Wed, 19 Dec 2007, Jessica Chen wrote:
> > >
> > > > Name                      Type           Data
> > > > (Default)                  REG_SZ     (value not set)
> > > > \Device\Serial0        REG_SZ     COM1
> > > > \Device\U2SPORT1 REG_SZ     COM7
> > > >
> > > > if i used on my computer, i can see:
> > > > COM1
> > > > COM1
> > > >
> i> > > when i used my .exe on my colleagues computer.
> > > > he has 2 serial port and 1 usb->serial.
> > > > but we can only see "COM4" for 3 times.
> > > >
> > > > so at least, the code can recognize how many COM on computer,
> whatever
> > > real
> > > > com port or usb-com.
> > > > but cannot read right com port number.
> > > >
> > > >
> > > > On Dec 19, 2007 1:57 PM, Rafael Menezes <so...@gm...> wrote:
> > > >
> > > > > Hi Jessica.
> > > > >
> > > > > Can you, for start, list what is on
> "HARDWARE\\DEVICEMAP\\SERIALCOMM"
> > > in
> > > > > your computer?
> > > > >
> > > > > Regards
> > > > > Rafael
> > > > >
> > > > >
> > > > > On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> > > > > >
> > > > > > Hi, thanks for ur email, Rafael.
> > > > > >
> > > > > > I researched myself.
> > > > > > I wrote a code.  I will list it as follows.
> > > > > > The problem seems it can recognize the real serial com port (Com
> 1
> > > in my
> > > > > > computer, registry).
> > > > > > But on my computer, I have a  USB->serial com port (Com 7 in my
> > > > > > computer, registry).
> > > > > > The code cannot recognize the USB->serial com port.
> > > > > > Is there any experienced persons can give any idea about that?
> > > > > >
> > > > > > #include <windows.h>
> > > > > > #include <stdio.h>
> > > > > > #include <tchar.h>
> > > > > >
> > > > > > int main(void)
> > > > > > {
> > > > > >     char *strSerialList[256];
> > > > > >     HKEY hKey;
> > > > > >
> > > > > >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> > > > > >                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> > > > > >                      0,
> > > > > >                      KEY_READ,
> > > > > >                      &hKey) != ERROR_SUCCESS)
> > > > > >     {
> > > > > >         return -1;
> > > > > >     }
> > > > > >
> > > > > >      int i=0;
> > > > > >      CHAR Name[25];
> > > > > >      UCHAR szPortName[25];
> > > > > >      LONG Status;
> > > > > >      DWORD dwIndex = 0;
> > > > > >      DWORD dwName;
> > > > > >      DWORD dwSizeofPortName;
> > > > > >      DWORD Type;
> > > > > >      dwName = sizeof(Name);
> > > > > >      dwSizeofPortName = sizeof(szPortName);
> > > > > >
> > > > > >      do
> > > > > >      {
> > > > > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName,
> NULL,
> > > > > > &Type,
> > > > > >                           szPortName, &dwSizeofPortName);
> > > > > >        if((Status == ERROR_SUCCESS) || (Status ==
> ERROR_MORE_DATA))
> > > > > >        {
> > > > > >           strSerialList[i] = (char*)(szPortName);
> > > > > >           i++;
> > > > > >        }
> > > > > >     } while((Status == ERROR_SUCCESS) || (Status ==
> > > ERROR_MORE_DATA));
> > > > > >     RegCloseKey(hKey);
> > > > > >
> > > > > >     for(int j=0;j<i;j++)
> > > > > >     {
> > > > > >       printf("%s\n",strSerialList[j]);
> > > > > >     }
> > > > > >
> > > > > >     return 0;
> > > > > > }
> > > > > >
> > > > > >
> > > > > > On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...>
> wrote:
> > > > > >
> > > > > > > You can send mails. Can you search on google?
> > > > > > >
> > > > > > >
> http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta =
> > > > > > >
> > > > > > >
> > >
> http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > > > > > > =
> > > > > > >
> > > > > > >
> > > > > > >  On 19/12/2007, Jessica Chen <jes...@gm... > wrote:
> > > > > > >
> > > > > > > > is there anyone have the experience for writing code of
> getting
> > > the
> > > > > > > > serial port info from windows?
> > > > > > > > can u give me an sample code?
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > >
> -------------------------------------------------------------------------
> > > > > > > >
> > > > > > > > SF.Net email is sponsored by:
> > > > > > > > Check out the new SourceForge.net Marketplace.
> > > > > > > > It's the best place to buy or sell services
> > > > > > > > for just about anything Open Source.
> > > > > > > >
> > >
> http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > > > > > > >
> > > > > > > > _______________________________________________
> > > > > > > > Dev-cpp-users mailing list
> > > > > > > > Dev...@li...
> > > > > > > > TO UNSUBSCRIBE:
> http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > > > > > > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > > Regards
> > > > > > > Rafael Menezes
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Regards
> > > > > Rafael Menezes
> > > >
> > >
> > >
> >
>
>

On an old test machine I have, the original code produces:
COM1
COM1
COM1
COM1
COM1
COM1

After adding strdup(), I get:
COM5
COM6
COM7
COM7
COM4
COM1

Are you sure that your change was correct, and that you remembered to
recompile?

One interesting thing here is that COM7 is printed twice, while my much
used COM3 is not enumerated.

The two COM7 seems to be a stupid M$ bug with an USB serial adapter :(

/pwm

On Wed, 19 Dec 2007, Jessica Chen wrote:

> Hi, Per,
>
>   for your second method, i modified like this.  i doesn't solve the
> problem.  the result is the same as before.
>   for the first method, i tried to change strSerialList[i] =
> (char*)(szPortName); to strSerialList[i] = strdup((char*)(szPortName));, but
> it seems doesn't work too.  :-(
>
> Regards,
> Jessica
>
>      do
>      {
>        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL, &Type,
>                           szPortName, &dwSizeofPortName);
>        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
>        {
>           strSerialList[i] = (char*)(szPortName);
>           printf("%s\n",strSerialList[i]);
>           i++;
>        }
>     } while((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA));
>     RegCloseKey(hKey);
>
> On Dec 19, 2007 2:44 PM, Per Westermark <pw...@ia...> wrote:
>
> > The test code is buggy. It uses the same buffer to retrieve the device
> > names, which means that the name will be overwritten.
> >
> > A quicky (with a memory leak that doesn't matter here) is to do
> > strSerialList[i] = strdup((char*)szPortName);
> >
> > Another alternative is to print the devices one-by-one directly when they
> > are found.
> >
> > /pwm
> >
> > On Wed, 19 Dec 2007, Jessica Chen wrote:
> >
> > > Name                      Type           Data
> > > (Default)                  REG_SZ     (value not set)
> > > \Device\Serial0        REG_SZ     COM1
> > > \Device\U2SPORT1 REG_SZ     COM7
> > >
> > > if i used on my computer, i can see:
> > > COM1
> > > COM1
> > >
i> > > when i used my .exe on my colleagues computer.
> > > he has 2 serial port and 1 usb->serial.
> > > but we can only see "COM4" for 3 times.
> > >
> > > so at least, the code can recognize how many COM on computer, whatever
> > real
> > > com port or usb-com.
> > > but cannot read right com port number.
> > >
> > >
> > > On Dec 19, 2007 1:57 PM, Rafael Menezes <so...@gm...> wrote:
> > >
> > > > Hi Jessica.
> > > >
> > > > Can you, for start, list what is on "HARDWARE\\DEVICEMAP\\SERIALCOMM"
> > in
> > > > your computer?
> > > >
> > > > Regards
> > > > Rafael
> > > >
> > > >
> > > > On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> > > > >
> > > > > Hi, thanks for ur email, Rafael.
> > > > >
> > > > > I researched myself.
> > > > > I wrote a code.  I will list it as follows.
> > > > > The problem seems it can recognize the real serial com port (Com 1
> > in my
> > > > > computer, registry).
> > > > > But on my computer, I have a  USB->serial com port (Com 7 in my
> > > > > computer, registry).
> > > > > The code cannot recognize the USB->serial com port.
> > > > > Is there any experienced persons can give any idea about that?
> > > > >
> > > > > #include <windows.h>
> > > > > #include <stdio.h>
> > > > > #include <tchar.h>
> > > > >
> > > > > int main(void)
> > > > > {
> > > > >     char *strSerialList[256];
> > > > >     HKEY hKey;
> > > > >
> > > > >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> > > > >                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> > > > >                      0,
> > > > >                      KEY_READ,
> > > > >                      &hKey) != ERROR_SUCCESS)
> > > > >     {
> > > > >         return -1;
> > > > >     }
> > > > >
> > > > >      int i=0;
> > > > >      CHAR Name[25];
> > > > >      UCHAR szPortName[25];
> > > > >      LONG Status;
> > > > >      DWORD dwIndex = 0;
> > > > >      DWORD dwName;
> > > > >      DWORD dwSizeofPortName;
> > > > >      DWORD Type;
> > > > >      dwName = sizeof(Name);
> > > > >      dwSizeofPortName = sizeof(szPortName);
> > > > >
> > > > >      do
> > > > >      {
> > > > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> > > > > &Type,
> > > > >                           szPortName, &dwSizeofPortName);
> > > > >        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
> > > > >        {
> > > > >           strSerialList[i] = (char*)(szPortName);
> > > > >           i++;
> > > > >        }
> > > > >     } while((Status == ERROR_SUCCESS) || (Status ==
> > ERROR_MORE_DATA));
> > > > >     RegCloseKey(hKey);
> > > > >
> > > > >     for(int j=0;j<i;j++)
> > > > >     {
> > > > >       printf("%s\n",strSerialList[j]);
> > > > >     }
> > > > >
> > > > >     return 0;
> > > > > }
> > > > >
> > > > >
> > > > > On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...> wrote:
> > > > >
> > > > > > You can send mails. Can you search on google?
> > > > > >
> > > > > > http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta =
> > > > > >
> > > > > >
> > http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > > > > > =
> > > > > >
> > > > > >
> > > > > >  On 19/12/2007, Jessica Chen <jes...@gm... > wrote:
> > > > > >
> > > > > > > is there anyone have the experience for writing code of getting
> > the
> > > > > > > serial port info from windows?
> > > > > > > can u give me an sample code?
> > > > > > >
> > > > > > >
> > > > > > >
> > -------------------------------------------------------------------------
> > > > > > >
> > > > > > > SF.Net email is sponsored by:
> > > > > > > Check out the new SourceForge.net Marketplace.
> > > > > > > It's the best place to buy or sell services
> > > > > > > for just about anything Open Source.
> > > > > > >
> > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > > > > > >
> > > > > > > _______________________________________________
> > > > > > > Dev-cpp-users mailing list
> > > > > > > Dev...@li...
> > > > > > > TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > > > > > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Regards
> > > > > > Rafael Menezes
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > > --
> > > > Regards
> > > > Rafael Menezes
> > >
> >
> >
>

Hi, Per,

  for your second method, i modified like this.  i doesn't solve the
problem.  the result is the same as before.
  for the first method, i tried to change strSerialList[i] =
(char*)(szPortName); to strSerialList[i] = strdup((char*)(szPortName));, but
it seems doesn't work too.  :-(

Regards,
Jessica

     do
     {
       Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL, &Type,
                          szPortName, &dwSizeofPortName);
       if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
       {
          strSerialList[i] = (char*)(szPortName);
          printf("%s\n",strSerialList[i]);
          i++;
       }
    } while((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA));
    RegCloseKey(hKey);

On Dec 19, 2007 2:44 PM, Per Westermark <pw...@ia...> wrote:

> The test code is buggy. It uses the same buffer to retrieve the device
> names, which means that the name will be overwritten.
>
> A quicky (with a memory leak that doesn't matter here) is to do
> strSerialList[i] = strdup((char*)szPortName);
>
> Another alternative is to print the devices one-by-one directly when they
> are found.
>
> /pwm
>
> On Wed, 19 Dec 2007, Jessica Chen wrote:
>
> > Name                      Type           Data
> > (Default)                  REG_SZ     (value not set)
> > \Device\Serial0        REG_SZ     COM1
> > \Device\U2SPORT1 REG_SZ     COM7
> >
> > if i used on my computer, i can see:
> > COM1
> > COM1
> >
> > when i used my .exe on my colleagues computer.
> > he has 2 serial port and 1 usb->serial.
> > but we can only see "COM4" for 3 times.
> >
> > so at least, the code can recognize how many COM on computer, whatever
> real
> > com port or usb-com.
> > but cannot read right com port number.
> >
> >
> > On Dec 19, 2007 1:57 PM, Rafael Menezes <so...@gm...> wrote:
> >
> > > Hi Jessica.
> > >
> > > Can you, for start, list what is on "HARDWARE\\DEVICEMAP\\SERIALCOMM"
> in
> > > your computer?
> > >
> > > Regards
> > > Rafael
> > >
> > >
> > > On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> > > >
> > > > Hi, thanks for ur email, Rafael.
> > > >
> > > > I researched myself.
> > > > I wrote a code.  I will list it as follows.
> > > > The problem seems it can recognize the real serial com port (Com 1
> in my
> > > > computer, registry).
> > > > But on my computer, I have a  USB->serial com port (Com 7 in my
> > > > computer, registry).
> > > > The code cannot recognize the USB->serial com port.
> > > > Is there any experienced persons can give any idea about that?
> > > >
> > > > #include <windows.h>
> > > > #include <stdio.h>
> > > > #include <tchar.h>
> > > >
> > > > int main(void)
> > > > {
> > > >     char *strSerialList[256];
> > > >     HKEY hKey;
> > > >
> > > >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> > > >                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> > > >                      0,
> > > >                      KEY_READ,
> > > >                      &hKey) != ERROR_SUCCESS)
> > > >     {
> > > >         return -1;
> > > >     }
> > > >
> > > >      int i=0;
> > > >      CHAR Name[25];
> > > >      UCHAR szPortName[25];
> > > >      LONG Status;
> > > >      DWORD dwIndex = 0;
> > > >      DWORD dwName;
> > > >      DWORD dwSizeofPortName;
> > > >      DWORD Type;
> > > >      dwName = sizeof(Name);
> > > >      dwSizeofPortName = sizeof(szPortName);
> > > >
> > > >      do
> > > >      {
> > > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> > > > &Type,
> > > >                           szPortName, &dwSizeofPortName);
> > > >        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
> > > >        {
> > > >           strSerialList[i] = (char*)(szPortName);
> > > >           i++;
> > > >        }
> > > >     } while((Status == ERROR_SUCCESS) || (Status ==
> ERROR_MORE_DATA));
> > > >     RegCloseKey(hKey);
> > > >
> > > >     for(int j=0;j<i;j++)
> > > >     {
> > > >       printf("%s\n",strSerialList[j]);
> > > >     }
> > > >
> > > >     return 0;
> > > > }
> > > >
> > > >
> > > > On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...> wrote:
> > > >
> > > > > You can send mails. Can you search on google?
> > > > >
> > > > > http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta =
> > > > >
> > > > >
> http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > > > > =
> > > > >
> > > > >
> > > > >  On 19/12/2007, Jessica Chen <jes...@gm... > wrote:
> > > > >
> > > > > > is there anyone have the experience for writing code of getting
> the
> > > > > > serial port info from windows?
> > > > > > can u give me an sample code?
> > > > > >
> > > > > >
> > > > > >
> -------------------------------------------------------------------------
> > > > > >
> > > > > > SF.Net email is sponsored by:
> > > > > > Check out the new SourceForge.net Marketplace.
> > > > > > It's the best place to buy or sell services
> > > > > > for just about anything Open Source.
> > > > > >
> http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > > > > >
> > > > > > _______________________________________________
> > > > > > Dev-cpp-users mailing list
> > > > > > Dev...@li...
> > > > > > TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > > > > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Regards
> > > > > Rafael Menezes
> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > Regards
> > > Rafael Menezes
> >
>
>

The test code is buggy. It uses the same buffer to retrieve the device
names, which means that the name will be overwritten.

A quicky (with a memory leak that doesn't matter here) is to do
strSerialList[i] = strdup((char*)szPortName);

Another alternative is to print the devices one-by-one directly when they
are found.

/pwm

On Wed, 19 Dec 2007, Jessica Chen wrote:

> Name                      Type           Data
> (Default)                  REG_SZ     (value not set)
> \Device\Serial0        REG_SZ     COM1
> \Device\U2SPORT1 REG_SZ     COM7
>
> if i used on my computer, i can see:
> COM1
> COM1
>
> when i used my .exe on my colleagues computer.
> he has 2 serial port and 1 usb->serial.
> but we can only see "COM4" for 3 times.
>
> so at least, the code can recognize how many COM on computer, whatever real
> com port or usb-com.
> but cannot read right com port number.
>
>
> On Dec 19, 2007 1:57 PM, Rafael Menezes <so...@gm...> wrote:
>
> > Hi Jessica.
> >
> > Can you, for start, list what is on "HARDWARE\\DEVICEMAP\\SERIALCOMM" in
> > your computer?
> >
> > Regards
> > Rafael
> >
> >
> > On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> > >
> > > Hi, thanks for ur email, Rafael.
> > >
> > > I researched myself.
> > > I wrote a code.  I will list it as follows.
> > > The problem seems it can recognize the real serial com port (Com 1 in my
> > > computer, registry).
> > > But on my computer, I have a  USB->serial com port (Com 7 in my
> > > computer, registry).
> > > The code cannot recognize the USB->serial com port.
> > > Is there any experienced persons can give any idea about that?
> > >
> > > #include <windows.h>
> > > #include <stdio.h>
> > > #include <tchar.h>
> > >
> > > int main(void)
> > > {
> > >     char *strSerialList[256];
> > >     HKEY hKey;
> > >
> > >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> > >                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> > >                      0,
> > >                      KEY_READ,
> > >                      &hKey) != ERROR_SUCCESS)
> > >     {
> > >         return -1;
> > >     }
> > >
> > >      int i=0;
> > >      CHAR Name[25];
> > >      UCHAR szPortName[25];
> > >      LONG Status;
> > >      DWORD dwIndex = 0;
> > >      DWORD dwName;
> > >      DWORD dwSizeofPortName;
> > >      DWORD Type;
> > >      dwName = sizeof(Name);
> > >      dwSizeofPortName = sizeof(szPortName);
> > >
> > >      do
> > >      {
> > >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> > > &Type,
> > >                           szPortName, &dwSizeofPortName);
> > >        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
> > >        {
> > >           strSerialList[i] = (char*)(szPortName);
> > >           i++;
> > >        }
> > >     } while((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA));
> > >     RegCloseKey(hKey);
> > >
> > >     for(int j=0;j<i;j++)
> > >     {
> > >       printf("%s\n",strSerialList[j]);
> > >     }
> > >
> > >     return 0;
> > > }
> > >
> > >
> > > On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...> wrote:
> > >
> > > > You can send mails. Can you search on google?
> > > >
> > > > http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta =
> > > >
> > > > http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > > > =
> > > >
> > > >
> > > >  On 19/12/2007, Jessica Chen <jes...@gm... > wrote:
> > > >
> > > > > is there anyone have the experience for writing code of getting the
> > > > > serial port info from windows?
> > > > > can u give me an sample code?
> > > > >
> > > > >
> > > > > -------------------------------------------------------------------------
> > > > >
> > > > > SF.Net email is sponsored by:
> > > > > Check out the new SourceForge.net Marketplace.
> > > > > It's the best place to buy or sell services
> > > > > for just about anything Open Source.
> > > > > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > > > >
> > > > > _______________________________________________
> > > > > Dev-cpp-users mailing list
> > > > > Dev...@li...
> > > > > TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > > > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > > > >
> > > > >
> > > >
> > > >
> > > > --
> > > > Regards
> > > > Rafael Menezes
> > >
> > >
> > >
> >
> >
> > --
> > Regards
> > Rafael Menezes
>

Name                      Type           Data
(Default)                  REG_SZ     (value not set)
\Device\Serial0        REG_SZ     COM1
\Device\U2SPORT1 REG_SZ     COM7

if i used on my computer, i can see:
COM1
COM1

when i used my .exe on my colleagues computer.
he has 2 serial port and 1 usb->serial.
but we can only see "COM4" for 3 times.

so at least, the code can recognize how many COM on computer, whatever real
com port or usb-com.
but cannot read right com port number.


On Dec 19, 2007 1:57 PM, Rafael Menezes <so...@gm...> wrote:

> Hi Jessica.
>
> Can you, for start, list what is on "HARDWARE\\DEVICEMAP\\SERIALCOMM" in
> your computer?
>
> Regards
> Rafael
>
>
> On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> >
> > Hi, thanks for ur email, Rafael.
> >
> > I researched myself.
> > I wrote a code.  I will list it as follows.
> > The problem seems it can recognize the real serial com port (Com 1 in my
> > computer, registry).
> > But on my computer, I have a  USB->serial com port (Com 7 in my
> > computer, registry).
> > The code cannot recognize the USB->serial com port.
> > Is there any experienced persons can give any idea about that?
> >
> > #include <windows.h>
> > #include <stdio.h>
> > #include <tchar.h>
> >
> > int main(void)
> > {
> >     char *strSerialList[256];
> >     HKEY hKey;
> >
> >     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
> >                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
> >                      0,
> >                      KEY_READ,
> >                      &hKey) != ERROR_SUCCESS)
> >     {
> >         return -1;
> >     }
> >
> >      int i=0;
> >      CHAR Name[25];
> >      UCHAR szPortName[25];
> >      LONG Status;
> >      DWORD dwIndex = 0;
> >      DWORD dwName;
> >      DWORD dwSizeofPortName;
> >      DWORD Type;
> >      dwName = sizeof(Name);
> >      dwSizeofPortName = sizeof(szPortName);
> >
> >      do
> >      {
> >        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL,
> > &Type,
> >                           szPortName, &dwSizeofPortName);
> >        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
> >        {
> >           strSerialList[i] = (char*)(szPortName);
> >           i++;
> >        }
> >     } while((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA));
> >     RegCloseKey(hKey);
> >
> >     for(int j=0;j<i;j++)
> >     {
> >       printf("%s\n",strSerialList[j]);
> >     }
> >
> >     return 0;
> > }
> >
> >
> > On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...> wrote:
> >
> > > You can send mails. Can you search on google?
> > >
> > > http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta =
> > >
> > > http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > > =
> > >
> > >
> > >  On 19/12/2007, Jessica Chen <jes...@gm... > wrote:
> > >
> > > > is there anyone have the experience for writing code of getting the
> > > > serial port info from windows?
> > > > can u give me an sample code?
> > > >
> > > >
> > > > -------------------------------------------------------------------------
> > > >
> > > > SF.Net email is sponsored by:
> > > > Check out the new SourceForge.net Marketplace.
> > > > It's the best place to buy or sell services
> > > > for just about anything Open Source.
> > > > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > > >
> > > > _______________________________________________
> > > > Dev-cpp-users mailing list
> > > > Dev...@li...
> > > > TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > > >
> > > >
> > >
> > >
> > > --
> > > Regards
> > > Rafael Menezes
> >
> >
> >
>
>
> --
> Regards
> Rafael Menezes

Hi Jessica.

Can you, for start, list what is on "HARDWARE\\DEVICEMAP\\SERIALCOMM" in
your computer?

Regards
Rafael


On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
>
> Hi, thanks for ur email, Rafael.
>
> I researched myself.
> I wrote a code.  I will list it as follows.
> The problem seems it can recognize the real serial com port (Com 1 in my
> computer, registry).
> But on my computer, I have a  USB->serial com port (Com 7 in my computer,
> registry).
> The code cannot recognize the USB->serial com port.
> Is there any experienced persons can give any idea about that?
>
> #include <windows.h>
> #include <stdio.h>
> #include <tchar.h>
>
> int main(void)
> {
>     char *strSerialList[256];
>     HKEY hKey;
>
>     if( RegOpenKeyEx(HKEY_LOCAL_MACHINE,
>                      TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
>                      0,
>                      KEY_READ,
>                      &hKey) != ERROR_SUCCESS)
>     {
>         return -1;
>     }
>
>      int i=0;
>      CHAR Name[25];
>      UCHAR szPortName[25];
>      LONG Status;
>      DWORD dwIndex = 0;
>      DWORD dwName;
>      DWORD dwSizeofPortName;
>      DWORD Type;
>      dwName = sizeof(Name);
>      dwSizeofPortName = sizeof(szPortName);
>
>      do
>      {
>        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL, &Type,
>                           szPortName, &dwSizeofPortName);
>        if((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
>        {
>           strSerialList[i] = (char*)(szPortName);
>           i++;
>        }
>     } while((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA));
>     RegCloseKey(hKey);
>
>     for(int j=0;j<i;j++)
>     {
>       printf("%s\n",strSerialList[j]);
>     }
>
>     return 0;
> }
>
>
> On Dec 19, 2007 12:34 PM, Rafael Menezes <so...@gm...> wrote:
>
> > You can send mails. Can you search on google?
> >
> > http://www.google.com.br/search?hl=pt-BR&q=c%2B%2B+com+port&meta=
> >
> >
> > http://www.google.com.br/search?num=30&hl=pt-BR&q=c%2B%2B+serial+port&meta
> > =
> >
> >
> >  On 19/12/2007, Jessica Chen <jes...@gm...> wrote:
> >
> > > is there anyone have the experience for writing code of getting the
> > > serial port info from windows?
> > > can u give me an sample code?
> > >
> > >
> > >
> > > -------------------------------------------------------------------------
> > > SF.Net email is sponsored by:
> > > Check out the new SourceForge.net Marketplace.
> > > It's the best place to buy or sell services
> > > for just about anything Open Source.
> > > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> > >
> > > _______________________________________________
> > > Dev-cpp-users mailing list
> > > Dev...@li...
> > > TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
> > > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> > >
> > >
> >
> >
> > --
> > Regards
> > Rafael Menezes
>
>
>


-- 
Regards
Rafael Menezes

is there anyone have the experience for writing code of getting the serial
port info from windows?
can u give me an sample code?

But I do have the answer. But I think you would have it too, if you look
at the header file where the WM_CLOSE message is defined. You will find a
huge number of other messages that you really want to know about, and a
lot of status and configuration flags.

Whenever you find an interesting message (or other symbol), it will then
be trivial to google or directly visit MSDN to get the _exact_ information
about when and how it is generated, or if there are version-specific
notices about it, i.e. a level of information that we can't take the time
to give you on this list.

In short: My answer is about methodology. Few things are as giving as
looking through the available header files. One hour with a couple of
header files will pop your head full with ideas what you can do. After
that, it is then trivial to flesh out the exact details about the
solutions.

You say that you have looked. My guess is that you forgot to look in the
header files, in which case my previous mail did specifically point you in
a very important direction. Life isn't always about getting explicit
answers. The best answers you can get on mailing lists or forums are not
explicit. The best answers you can get are the answers that solves a
number of future problems too. In this case: where to look.

In this case:
google on "minimize size event" should as first match have told you about
OnSizeChanged(). This might feel like a side track, but the word SIZE
should feel very important.

A bit closer look at the WM_SIZE message should have informed you that
wParam can be SIZE_MINIMIZED.

On the other hand:
Looking for WM_CLOSE in the include files would have noticed it in
winuser.h.

Searching for MINIMIZE in winuser.h would match:
#define WS_MINIMIZE     0x20000000
#define WS_MINIMIZEBOX  0x20000
#define SW_SHOWMINIMIZED 2
#define SW_MINIMIZE 6
#define SW_FORCEMINIMIZE 11
#define SM_CXMINIMIZED 57
#define SM_CYMINIMIZED 58
#define SPI_GETMINIMIZEDMETRICS 43
#define SPI_SETMINIMIZEDMETRICS 44
#define SIZE_MINIMIZED 1
#define SC_MINIMIZE 0xF020
#define HBMMENU_MBAR_MINIMIZE ((HBITMAP)3)
#define HBMMENU_MBAR_MINIMIZE_D ((HBITMAP)7)
#define HBMMENU_POPUP_MINIMIZE ((HBITMAP)11)
typedef struct tagMINIMIZEDMETRICS {
        UINT cbSize;
        int iWidth;
        int iHorzGap;
        int iVertGap;
        int iArrange;
} MINIMIZEDMETRICS,*LPMINIMIZEDMETRICS;

A quick scan at these matches should also give a very good idea how to
continue with google. They tell you such thing as how to configure a
window to show a minimuze button, to allow minimizing, to make it
minimized, to get the size of a minimized window, to catch the event when
it gets minimized etc...

Internet is large. To find something, you must develop a method how to
search and where to start searching. Only then can you quickly drill down
to the interesting parts.

You are of course free to consider my answers bad, but learning how to
search to be able to find the needed information in less than 5 minutes is
quite a lot better than to have to spend 5 minutes writing a question and
then have to wait hours or days for a possibly useful answer.

/pwm

On Wed, 19 Dec 2007, angel dario wrote:

> The reason why i ask is not because i didn't took time to look it up on books, MSDN, or whatever comes to your mind. The reason i ask is because after i made a big search i couldn't find anything. GOT IT????????
>
> And if you don't have the answer please don't answer with something else.
>
> thanks anyways.
> _________________________________________________________________
> Share life as it happens with the new Windows Live.
> http://www.windowslive.com/share.html?ocid=TXT_TAGHM_Wave2_sharelife_122007

The reason why i ask is not because i didn't took time to look it up on boo=
ks, MSDN, or whatever comes to your mind. The reason i ask is because after=
 i made a big search i couldn't find anything. GOT IT????????
=20
And if you don't have the answer please don't answer with something else.=20
=20
thanks anyways.
_________________________________________________________________
Share life as it happens with the new Windows Live.
http://www.windowslive.com/share.html?ocid=3DTXT_TAGHM_Wave2_sharelife_1220=
07=

Have you spent any time on the MSDN site, reading up on the documentation
available there?

Have you bought yourslf a good book on Win32 programming?

Have you spent any time reading through the relevant header files - for
example looking for all constants starting with WM_?

/pwm

On Tue, 18 Dec 2007, angel dario wrote:

>
> I want to know what's the message that is sended to the window when i cli=
ck on the minimize button.
>
> For example:
>   When i click on the X button, it sends a WM_QUIT message to the procedu=
re.
>
> _________________________________________________________________
> i=92m is proud to present Cause Effect, a series about real people making=
 a difference.
> http://im.live.com/Messenger/IM/MTV/?source=3Dtext_Cause_Effect

=20
I want to know what's the message that is sended to the window when i click=
 on the minimize button.
=20
For example:
  When i click on the X button, it sends a WM_QUIT message to the procedure=
.
=20
_________________________________________________________________
i=92m is proud to present Cause Effect, a series about real people making a=
 difference.
http://im.live.com/Messenger/IM/MTV/?source=3Dtext_Cause_Effect=

Thank you very much, that fixed the problem.  

adrian <ad...@la...> wrote:  Äîáðîãî âðåìåíè ñóòîê, c_b...@ya...!
Âàìè, Brad Woosley áûëî íàïèñàíî:


>I attempted to include , but I am told that there is no such file when I complie it. 
> Does this not come with Dev and I need to get it, or is there something else wrong with my code?
>
You can define IDC_STATIC as:

#ifndef IDC_STATIC
#define IDC_STATIC (-1)
#endif

Ñ óâàæåíèåì, ×óðèí.




       
---------------------------------
Looking for last minute shopping deals?  Find them fast with Yahoo! Search.

I attempted to include <afxres.h>, but I am told that there is no such file when I complie it.  
  Does this not come with Dev and I need to get it, or is there something else wrong with my code?

adrian <ad...@la...> wrote:
  Äîáðîãî âðåìåíè ñóòîê, c_b...@ya...!
Âàìè, Brad Woosley áûëî íàïèñàíî:


>I have another problem with creating a dialog box using Win32. I am trying to get text to appear on the dialog box. Each time that I try to compile I am told that I am having a problem with 2 lines in the resource file. 
> 
> //LINE 1:
> 
> GROUPBOX "Help for this program...",IDC_STATIC,7,7,225,52
> 
> //LINE 2:
> 
> CTEXT "Insert help info here",IDC_STATIC,16,18,144,33 
> 
> I am told that there is a parse error in these lines. I have windows.h included. 
> 
> Could some one tell me what I am doing wrong here. If needed, I will provide more of the program. 
I test your code by Resource Workshop and it found not any errors. But in dev-cpp you have to include , 'cos ID_STATIC implemented in this file.

Ñ óâàæåíèåì, ×óðèí.




       
---------------------------------
Never miss a thing.   Make Yahoo your homepage.

I decided to go 98 (found an old dusty copy in my attic...) Works fine n=
ow.

On Sun, 16 Dec 2007 09:58:20 -0500, <rus...@ao...> wrote:

>
>  I can't speak with any
> certainty, but I'd say that the win95 os is too old to run any of the
> more recent versions (post 2000). You'd need to look at the versions
> that were out at the time. In all honesty it'd be much better to pick
> up win98/2000/xp.
>
> here's a good link for os (at pricewatch):
>
> http://www.pricewatch.com/software_oper_system/
>
>
>
>
>
>
> here's newegg's pricing:
>
> http://www.newegg.com/Store/SubCategory.aspx?SubCategory=3D368&name=3D=
Operating-Systems
>
>
>
>
>
>
>
> btw.. does this feel like a loop to anyone else? ;)
>
>
>
> -----Original Message-----
> From: Unknown Name <unk...@gm...>
> To: dev...@li...
> Sent: Sat, 15 Dec 2007 12:36 pm
> Subject: [Dev-C++] Problem with Windows 95
>
>
>
>
>
>
>
>
>
>
> When I downloaded and installed Dev-Cpp 4.9.9.2 on my Windows 95 machi=
ne,
> which is version 4.0.950A, it said there were several DLL's missing, s=
o I
> downloaded and installed them. It didn't work after I did that, so I
> uninstalled it and installed the older version avliable. Can someone
> please help me. Any help would be glady appreciated.
>
> Thanks,
> "Unknown Name"
>



-- =

Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

 I can't speak with any
certainty, but I'd say that the win95 os is too old to run any of the
more recent versions (post 2000). You'd need to look at the versions
that were out at the time. In all honesty it'd be much better to pick
up win98/2000/xp. 

here's a good link for os (at pricewatch):

http://www.pricewatch.com/software_oper_system/





 

here's newegg's pricing:

http://www.newegg.com/Store/SubCategory.aspx?SubCategory=368&name=Operating-Systems




 



btw.. does this feel like a loop to anyone else? ;)
 


 

-----Original Message-----
From: Unknown Name <unk...@gm...>
To: dev...@li...
Sent: Sat, 15 Dec 2007 12:36 pm
Subject: [Dev-C++] Problem with Windows 95










When I downloaded and installed Dev-Cpp 4.9.9.2 on my Windows 95 machine,  
which is version 4.0.950A, it said there were several DLL's missing, so I  
downloaded and installed them. It didn't work after I did that, so I  
uninstalled it and installed the older version avliable. Can someone  
please help me. Any help would be glady appreciated.

Thanks,
"Unknown Name"

-- 
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

-------------------------------------------------------------------------
SF.Net email is sponsored by:
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services
for just about anything Open Source.
http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
_______________________________________________
Dev-cpp-users mailing list
Dev...@li...
TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
https://lists.sourceforge.net/lists/listinfo/dev-cpp-users



 


________________________________________________________________________
More new features than ever.  Check out the new AOL Mail ! - http://webmail.aol.com

I have another problem with creating a dialog box using Win32.  I am trying to get text to appear on the dialog box.  Each time that I try to compile I am told that I am having a problem with 2 lines in the resource file.  
   
  //LINE 1:
   
  GROUPBOX      "Help for this program...",IDC_STATIC,7,7,225,52
   
  //LINE 2:
   
  CTEXT         "Insert help info here",IDC_STATIC,16,18,144,33 
   
  I am told that there is a parse error in these lines.  I have windows.h included.  
   
  Could some one tell me what I am doing wrong here.  If needed, I will provide more of the program.  


       
---------------------------------
Never miss a thing.   Make Yahoo your homepage.

When I downloaded and installed Dev-Cpp 4.9.9.2 on my Windows 95 machine,  
which is version 4.0.950A, it said there were several DLL's missing, so I  
downloaded and installed them. It didn't work after I did that, so I  
uninstalled it and installed the older version avliable. Can someone  
please help me. Any help would be glady appreciated.

Thanks,
"Unknown Name"

-- 
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

I am now dealing with multithreaded programming.
one thread is RS232, another one is User Interface.

The structure will be:

                            User interface Thread ------> global
variable(s)----> Worker thread
                            Worker Thread  ------> custom window message(s)
----> User interface Thread

I don't know how to implement custom window messages!
PostMessage, GetMessage, DispatchMessage?



=====================================
REFERENCES:
Now let's move to the communication methods between threads.
There are three of them:

    * Using global variables
    * Windows messages
    * Event

Threads share the process's resources including global variables so the
threads can use global varibles to communicate with each other. However this
method must be used with care. Thread synchronization must enter into
consideration. For example, if two threads use the same structure of 10
members , what happens when Windows suddenly yanks the control from one of
the thread when it was in the middle of updating the structure? The other
thread will be left with an inconsistent data in the structure! Don't make
any mistake, multithreading programs are harder to debug and maintain. This
sort of bug seems to happen at random which is very hard to track down.
You can also use Windows messages to communicate between threads. If the
threads are all user interface ones, there's no problem: this method can be
used as a two-way communication. All you have to do is defining one or more
custom windows messages that are meaningful to the threads. You define a
custom message by using WM_USER message as the base value say , you can
define it like this:

        WM_MYCUSTOMMSG equ WM_USER+100h

Windows will not use any value from WM_USER upward for its own messages so
you can use the value WM_USER and above as your own custom message value.
If one of the thread is a user interface thread and the other is a worker
one, you cannot use this method as two-way communication since a worker
thread doesn't have its own window so it doesn't have a message queue. You
can use the following scheme:

                            User interface Thread ------> global
variable(s)----> Worker thread
                            Worker Thread  ------> custom window message(s)
----> User interface Thread

In fact, we will use this method in our example.
The last communication method is an event object. You can view an event
object as a kind of flag. If the event object is in "unsignalled" state, the
thread is dormant or sleeping, in this state, the thread doesn't receive CPU
time slice. When the event object is in "signalled" state,Windows "wakes up"
the thread and it starts performing the assigned task.




                            Worker Thread  ------> custom window message(s)
----> User interface Thread           User interface Thread ------> global
variable(s)----> Worker thread
                            Worker Thread  ------> custom window message(s)
----> User interface Thread

Thanks Per.

Can you point me some directions or docs? I cant find any thing to fit my
needs (almost the same you did... a simple GUI like a java applet, some
buttons, etc). I will need a activex component to have access to the DOM?
There is somewhere where I can see screenshots of what you have done?

Thanks in advance


Regards
Rafael


On 14/12/2007, Per Westermark <pw...@ia...> wrote:
>
> Yes, I have written C++ plugins that makes use of wxWidgets to display
> property dialogs and graphs. I use it in a raytracer to allow the creation
> of new object and surface types with integrated GUI for configuring and
> previewing.
>
> The bad thing about C++ in a DLL is that the application and the plugins
> should be compiled with the same C++ compiler, since most OS doesn't have
> a standard ABI for C++ interoperability.
>
> /pwm
>
> On Thu, 13 Dec 2007, Rafael Menezes wrote:
>
> > Hi List
> >
> > Someone know or already done a c++ browser plug in with GUI (mean... c++
> > GUI)? I'm googling around for a couple of weeks and cant find anything
> > useful.
> >
> > Another question:
> > What is the fast way to parse a char[n]? I have a string like that:
> > L 12/11/2007 - 15:56:45: "x6_Squibles<52><STEAM_0:1:3683971><TERRORIST>"
> > attacked "x6_scottish<37><STEAM_0:1:1737><CT>" with "glock18" (damage
> "72")
> > (damage_armor "0") (health "28") (armor "0")
> >
> > and like to split in different, say rows in a XML file. I can write the
> XML
> > with no problem, but I'm stuck into many loops reading the string, see
> if I
> > already pick that value, if, then, for.... well... isn't beauty at all.
> Its
> > working, but way too complex.
> >
> > Thanks in advance.
> >
> > --
> > Regards
> > Rafael Menezes
> >
>
>


-- 
Regards
Rafael Menezes

Yes, I have written C++ plugins that makes use of wxWidgets to display
property dialogs and graphs. I use it in a raytracer to allow the creation
of new object and surface types with integrated GUI for configuring and
previewing.

The bad thing about C++ in a DLL is that the application and the plugins
should be compiled with the same C++ compiler, since most OS doesn't have
a standard ABI for C++ interoperability.

/pwm

On Thu, 13 Dec 2007, Rafael Menezes wrote:

> Hi List
>
> Someone know or already done a c++ browser plug in with GUI (mean... c++
> GUI)? I'm googling around for a couple of weeks and cant find anything
> useful.
>
> Another question:
> What is the fast way to parse a char[n]? I have a string like that:
> L 12/11/2007 - 15:56:45: "x6_Squibles<52><STEAM_0:1:3683971><TERRORIST>"
> attacked "x6_scottish<37><STEAM_0:1:1737><CT>" with "glock18" (damage "72")
> (damage_armor "0") (health "28") (armor "0")
>
> and like to split in different, say rows in a XML file. I can write the XML
> with no problem, but I'm stuck into many loops reading the string, see if I
> already pick that value, if, then, for.... well... isn't beauty at all. Its
> working, but way too complex.
>
> Thanks in advance.
>
> --
> Regards
> Rafael Menezes
>