dev-cpp-users Mailing List for Dev-C++

Hi, I need to know like creating library Qt in Dev c++ and compile sources
of qt


 Greetings

--
Victor Romero V.

ric...@ir... schrieb:

>Hi, ineed to create a bmp file starting from a map of pixel...
>
>I have a "map" of pixel with the hex color of every pixel...
>
>How can i transfrom it into a bmp file?
>
>  
>


Hi Riccardo,

maybe this links to further bmp file information could help to solve 
your problem:


http://en.wikipedia.org/wiki/Windows_bitmap

http://it.wikipedia.org/wiki/BMP

http://de.wikipedia.org/wiki/Windows_bitmap



With kind regards

Werner Kitzmann

If it is a once-off operation, there are a number of tools to convert
between formats. Several tools expect resource files with icons and
bitmaps in hex format and converts them to *.ico or *.bmp files.

If you need to do it regularly, you might google for libbmp.

/Per W

On Wed, 29 Mar 2006 ric...@ir... wrote:

> Hi, ineed to create a bmp file starting from a map of pixel...
>
> I have a "map" of pixel with the hex color of every pixel...
>
> How can i transfrom it into a bmp file?
>
> Thanks, Riccardo
>
>
> -------------------------------------------------------
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Hi, ineed to create a bmp file starting from a map of pixel...

I have a "map" of pixel with the hex color of every pixel...

How can i transfrom it into a bmp file?

Thanks, Riccardo

i am programming in dev cpp and have a program that generates two a surface and then rotate one of the surfaces done in one class. After rotation i do surface fitting and then call the z coordinates of the two surfaces in another function. My problem is when calling the coordinates i get 2 sets of coordinates but from the same surface instead of two sets from different surfaces. how do i rite it so that it returns both sets o coordinates. 

_Eddy_
		
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Dear Riccardo, 

i guess Your cgi script does not have right to read file, assuming Your
Webserver is Linux based. 
Eventually try this with the PHP script after uploading file:

system ("chmod 0777 ".$filename);

pls note the space between the last 7 and the final " !!
also ensure to have reading rights at the Dir you placed the file.
(Maybe do chmod with the dir also!)

if You do not want the uploaded file to be executable rather use "chmod
0666 ".$filename

hope this helps. 

brgds/ guido 

I have a problem with a cgi script...

I upload a file on apache using a php script , no problem...
Then i tryed to read this file from a cgi script but it always sayd that 
the file doesn't exist....
But it exist, and to open the file i use :

ifstream in("file.txt"):

i tried also to put the path like 

ifstream in("cgi-bin/file.txt"):

and

ifstream in("cgi-bin/file.txt"):


but is always the same... it doesn't find the file...


What appen???

ric...@ir... wrote:
> There is a wc++ way to check which permissions there are on a file?
> Thanks,Riccardo
>
>
>   
see the stat function and <sys/stat.h>

There is a wc++ way to check which permissions there are on a file?
Thanks,Riccardo

Since the second parameter is an integer and you want good precision, just
typecast the first parameter to double.

However, the reason that there are no pow(int,int) is that you normally
don't use pow when playing with integers.

just do:

n = num;
count = 0;
while (n >= 10) {
    n /= 10;
    count++;
}

to find out # of times you can divide by 10.

Normally when extracting digits, it is performed in reverse, i.e.
something like (I might have a +/- 1 error somewhere since I'm just
writing without testing):

char digits[30];
char* p = digits+30;
int negative = n < 0;
if (n < 0) n = -n;
*(--p) = '\0';
*(--p) = '0' + (n % 10);
n /= 10;
while (n) {
    *(--p) = '0' + (n % 10);
    n /= 10;
}
if (negative) *(--p) = '-';

std::cout << digits << std::endl;

/Per W

On Thu, 23 Mar 2006, Sheets, James D. wrote:

> This is the program I am trying to compile:
> // Programming Exercise 2
> #include <iostream>
> #include <cmath>
> using namespace std;
> int main()
> {
>  int num;
>  int digit;
>  int sum = 0;
>  int pwr = 0;
>  cout << "Enter an integer: " << flush;
>  cin >> num;
>  cout << endl;
>  cout << "The digits of " << num << " are: ";
>  if (num < 0)
>   num = -num;
>   //Find the highest power of 10 that divides the number
>  while (num / static_cast<int>(pow(10, pwr)) > 10)
>   pwr++;
>
>  while (num > 0)
>  {
>   digit = num / static_cast<int>(pow(10, pwr));
>   cout << digit << " ";
>   sum = sum + digit;
>   num = num % static_cast<int>(pow(10, pwr));
>   pwr--;
>  }
>  if (pwr != -1)  //Either num is 0 or there are trailing zeros in num
>   while (pwr != -1)
>   {
>    cout << 0 << " ";
>    pwr--;
>   }
>  cout << endl;
>  cout << "The sum of the digits = " << sum << endl;
>  return 0;
> }
>
> I have the following statement giving me an error when compiled;
>  while (num / static_cast<int>(pow(10, pwr)) > 10)
>
> The debug has the following:
> Line      File Name                                    Message
> 26       C:\Files\Ch5Ex2.                           cpp call of overloaded `pow(int, int&)' is ambiguous
>  note    C:\Dev-Cpp\include\math.h:150     candidates are: double pow(double, double)
>  note    C:\Dev-Cpp\include\math.h:150      long double std::pow(long double, int)
>  note    C:\Dev-Cpp\include\math.h:150      float std::pow(float, int)
>  note    C:\Dev-Cpp\include\math.h:150      double std::pow(double, int)
>  note    C:\Dev-Cpp\include\math.h:150      long double std::pow

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aXN0cy5zb3VyY2Vmb3JnZS5uZXQ+IA0K

If  you are lazy, and the data is in correct byte order, then you can do:

char readbuf[100];
unsigned int n;

n = *(unsigned int*)&readbuf[pos];

However, to make sure that the program works independent on processor
architecture, you should do something like:

n = ((unsigned)buf[pos])
  + (((unsigned)buf[pos+1]) << 8)
  + (((unsigned)buf[pos+2]) << 16)
  + (((unsigned)buf[pos+3]) << 24);
pos += 4;

Adjust order of bytes depending on how the file was saved.

/Per W

On Thu, 23 Mar 2006, Riccardo Roasio wrote:

> Hi,
> i have a file with a part of ASCII code and a second part with binary
> data that should represent unsigned int.
> I found how to read the file and write on another file the same binary
> data, but i don't know how to convert these data into unsigned int.
> Can anyone help me?
> Thanks,Riccardo
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by xPML, a groundbreaking scripting language
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> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>

Hi,
i have a file with a part of ASCII code and a second part with binary 
data that should represent unsigned int.
I found how to read the file and write on another file the same binary 
data, but i don't know how to convert these data into unsigned int.
Can anyone help me?
Thanks,Riccardo

I can confirm that you confirmed to the wrong list - you should confirm to
the administrative list, not to us other subscribers :)

/Per W

> confirm
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confirm
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Is there a way to for my Win32 app, even if its minimized, to receive 
certain keystrokes or key combinations that are pressed by the user?

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I use the SetWindowLong() function to change the WinProc of an hwnd. But for 
windows 2000 and higher you can't do it to a window that doesn't belong to 
the same process as the calling thread. Is there another way to change the 
attribute so that I can change the WndProc of lets say...  the internet 
window?

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Can't figure out how to use this, especially the final
parameter:

HICON ExtractAssociatedIcon(

    HINSTANCE  hInst,	// application instance handle
    LPTSTR  lpIconPath,	// path and filename of file
for which icon is wanted
    LPWORD  lpiIcon 	// pointer to icon index
   );

NICAISE wrote:
> Each sample code finded anywhere results with the following line :
> libxml++/libxml++.h: No such file or directory.
> I imagine there's a line to add in compilateur options

Is that the only include file not being found?

Check Project > Project Options > Directories > Include Directories. Does the
directory in which libxml++ resides appear in that window?  If so and it's still
not working, try using the absolute path in the include statement.  For example:

#include "c:/directory_name/subdirectory_name/libxml++/libxml++.h"

There is some small chance, depending upon your environment, that backslashes
are required:

#include "c:\directory_name\subdirectory_name\libxml++\libxml++.h"

--
Chuck

Hello,

 

            I'm starting C++ and I've chosen Dev-C++ in order to learn it.

I'd like to use xpath, dom and xslt. 

 

In that aim, I've downloaded libxml from the update manager.

Each sample code finded anywhere results with the following line :

 

libxml++/libxml++.h: No such file or directory.

 

I imagine there's a line to add in compilateur options 

Like -lmysql for Mysql library.

 

What should I do ?

 

 

Thanks a lot.

Note - bit-wise and is _not_ the same as logical and.

On Sat, 18 Mar 2006, Daniel Pettersson wrote:

> A tip.
>
> double the value for each flag, 1 2 4 8 etc
> ex:
>    1 + 4 = 00000101
>
>    to check weither the flag has been set just use "and"   ex: check for
> 4:   isFlagSet = 4 & flags;
>
> it will become 1 if the flag is set and 0 otherwise

isFlagSet will become 4 if the flag is set, else 0.

To make it a logical expression (needed if isFlagSett is of type bool, or
if the expression is used to count up a variable with 1 if flag is set),
the following is needed:

isFlagSet = (4 & flags) != 0;

/Per W

A tip.

double the value for each flag, 1 2 4 8 etc
ex:
   1 + 4 =3D 00000101

   to check weither the flag has been set just use "and"   ex: check for=20
4:   isFlagSet =3D 4 & flags;

it will become 1 if the flag is set and 0 otherwise
/Daniel Pettersson


Noorez Kassam wrote:

> I have a question about flags. Here's an example of my problem:
>
> FLAG A =3D 1;
> FLAG B =3D 2;
>
> Lets say both flags are needed, so they are | together like so... A|B.=20
> How can I then find what flags are set later on from the single value?
>
> _________________________________________________________________
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>
>
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> that extends applications into web and mobile media. Attend the live=20
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enum {
    FLAG_A =3D 0x0001,
    FLAG_B =3D 0x0002,
    FLAG_C =3D 0x0004
};

unsigned flags =3D FLAG_A|FLAG_B;

=2E..

// A is set
if (flags & FLAG_A) {}

// A isn't set
if (!(flags & FLAG_A) {}

// Only A is set
if (flags =3D=3D FLAG_A) {}

// Both A and B is set
if ((flags & FLAG_A|FLAG_B) =3D=3D (FLAG_A|FLAG_B)) {}

// A is set but not B
if ((flags & FLAG_A|FLAG_B) =3D=3D FLAG_A) {}

/Per W

On Fri, 17 Mar 2006, Noorez Kassam wrote:

> I have a question about flags. Here's an example of my problem:
>
> FLAG A =3D 1;
> FLAG B =3D 2;
>
> Lets say both flags are needed, so they are | together like so... A|B. Ho=
w
> can I then find what flags are set later on from the single value?
>
> _________________________________________________________________
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t=AE
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>
>
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>

I have a question about flags. Here's an example of my problem:

FLAG A = 1;
FLAG B = 2;

Lets say both flags are needed, so they are | together like so... A|B. How 
can I then find what flags are set later on from the single value?

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I'm not sure what include to use to set up the dialog type.  Windows.h =
doesn't do it.

Thanks!