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

is memset and free defined in a special MSVC++ header
file? I have a glut program made for MSVC++ and am
having a hard time using it on Dev-C++ because those
functions are not defined. Does anyone know if there
is a website that has the header file I need? 

=====
Julio

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I have finally accomplished compiling a dll and a project that uses it, 
thanks to those that helped!

My only problem now is that I cannot use iostream's cout within the DLL, I 
get undefined reference errors... I've been working on this in the mingw 
mailing list, and came across an interesting discovery today...

I'm trying to include the libstdc++.a library into the dll project, but its 
not getting passed on the command line at link time.  Here is the compile 
and Link command lines :

----------
Compiling files :
C:\OPENGL\DEV-C_~1\BIN\gcc -c -DBUILDING_DLL=1 -I. "c:\opengl\using a 
dll\printdll\print.cpp"  -s -mwindows   -IC:\OPENGL\DEV-C_~1\INCLUDE\ 
-IC:\OPENGL\DEV-C_~1\INCLUDE\G__~1 -IC:\OPENGL\DEV-C_~1\INCLUDE\ 
-LC:\OPENGL\DEV-C_~1\LIB\ -BC:\OPENGL\DEV-C_~1\BIN\
Linking files :
C:\OPENGL\DEV-C_~1\BIN\dllwrap --export-all --output-def 
C:\OPENGL\USINGA~1\PRINTDLL\dll.def --implib 
"C:\OPENGL\USINGA~1\PRINTDLL\libPrintdll.a" -o 
c:\opengl\usinga~1\printdll\Printdll.dll "c:\opengl\using a 
dll\printdll\print.o"
----------

If, in project options, I uncheck the box that says "Create a DLL" then I 
will see "-lstdc++" on the link command line, but not if the "Create a DLL" 
option is checked.  Is this a bug within Dev-C++ ?  I tried running the 
linking command, with all the options, from a dos window but the command is 
too long.

Thanks for any help,
Mike


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Ok. now Ive done it... but still am getting a zero count on application windows. Anybody knows what Im doing wrong? the following is a test code. Note that the code wasnt optimized for speed for it still is a test.

#include <string>
#include <windows.h>
#include <iostream.h>

BOOL IsAPPWINDOW(HWND);
BOOL IsVISIBLE(HWND);
int i = 0;

BOOL CALLBACK AppGetWindows(HWND hwnd, LPARAM lParam) {
   if (IsAPPWINDOW(hwnd)) {
      // APPWINDOW...
      cin >> str2;
      if (IsVISIBLE(hwnd)) {
         // VISIBLE. Adding...
         i = i + 1;
      }
   }
   return true;
}

BOOL IsAPPWINDOW(HWND hwnd) {
   if ((GetWindowLong(hwnd,GWL_EXSTYLE) & WS_EX_APPWINDOW)==WS_EX_APPWINDOW) {
      // the window referenced by the handle has a WS_EX_APPWINDOW style
      return true;
   } else {
      // no it doesnt
      return false;
   }
}

BOOL IsVISIBLE(HWND hwnd) {
   if ((GetWindowLong(hwnd,GWL_STYLE) & WS_VISIBLE)==WS_VISIBLE) {
      // the window referenced by the handle has a WS_VISIBLE style
      return true;
   } else {
      // no it doesnt
      return false;
   }
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int cmdShow) {
   if (EnumWindows(*AppGetWindows, 0)) {
      // print out the number of windows
      cout << i;
   } else {
      cout << "EnumWindows Failed!";
   }
   string str;
   cin >> str;
}


The program is suposed to detect the current windows with the WS_VISIBLE and WS_EX_APPWINDOW styles and then count them. The output is the number of windows that met the criteria. As one of you all said... the windows taskbar only enumerates windows with the afformentioned styles. Take note that the code is not yet optimized for it is still a test code. Any help on optimizing the code would be a great help.

Back to the problem... Did I do something wrong again??? I have other applications running and it is supposed to output the number of the windows available in the taskbar. Anybody! Help!


__________________________________
www.edsamail.com

to stay up on the screen the result of a program
you must put a last sentence in your source code,
before the 'return 0' :

system("PAUSE");

I hope this will work.
In fact this sentence appears as defect in Dev++.

Hiya. You'll find enclosed a revamped version of your program that works ok.
I hope you don't mind? However before you look at the files I'll tell you
what made it not work and see if you can work it out for yourself before
peeking.

The main problem of the functions you wrote was that you were trying to
access private members of an object from outside of that object (non-member
functions). You could give the fuctions friend access to the class, but you
don't need to. One thing that helps is that you don't need to worry about
changing the object that is passed. It is a copy of the original and any
changes to it won't affect the original. Unless an argument is passed as a
referenced then a copy is made of the original for the function. The only
other way the function could change the original would for a pointer to be
passed, which is the traditional approach. Be aware that making a copy of
objects adds overhead to a function call, slowing everything down in the
case of very big objects. The size of 100 you use at the moment is OK for
now though.

Now you know that you aren't affecting the original then you can
destructivly operate on the passed copy and get the info you want. That is
you can count the values by popping them off the stack, for example.

If you wanted to do it non-destructivly then you could add the ability to
the class, meaning add other member functions that provide other
information, but don't expose the private members unecessarily. The
alternative is to make a manual copy and either work with the copy or use
original and restore it after, but be aware that this isn't much different
than the current approach!

I have made some other optimisations in the attached version. Maybe you'll
like them, maybe you won't!

Regards, Jason.

----- Original Message -----
From: "chromatonus 712" <chr...@ho...>
To: <dev...@li...>
Sent: Friday, November 30, 2001 2:28 AM
Subject: [Dev-C++] stack with class


> hi, may I know how to display elements and count the number of elements in
a
> stack defined below, without destruction? thank you very much!
>
>
>
>
>
> // Program: STACK 2
> // Objective: To understand how a stack works as implemented by a class
> // and an array for the data
> //  Last modified 11-29-01
>
>
> #include <iostream.h>
> #include <conio.h>
>
> const max_stack = 100;
>
> class stacktype
>   {
>     public:
>   stacktype();
>          // default constructor
>          // postcondition: initializes stack by setting TOP = 0
>          void initialize();
>          // postcondition: erase stack by setting TOP = 0
>          void push( int );
>          // postcondition: If the stack is not full,
>             // increase TOP by 1 , then
>             // put info into DATA[TOP]
>          int pop();
>          // postcondition: If the stack is not empty,
>            //                 put DATA[TOP] into x,
>             // decrease TOP by 1,
>             // return x
>         bool is_empty();
>          // postcondition: Return true if stack is empty, false otherwise.
>          bool is_full();
>          // postcondition: Return true if stack is full, false otherwise.
>     private:
>     int mydata[max_stack];
>          int mytop; // subscript of the top of the stack
>   };
>
>
>
//==========================================================================
====
> //============================== Free functions
> ================================
>
//==========================================================================
====
>
> void display_top( stacktype );
> // precondition: send in stack
>    // postcondition: display, without destruction, the value in data[top]
> void display_stack( stacktype );
> // precondition: send in stack
>    // postcondition: display, without destruction, the values of all the
>    // elements in the stack, in the order entered.
> int count_values( stacktype );
> // precondition: send in stack
>    // postcondition: return the number of data pieces
> int menu();
> // postcondition: initial screen.  Display options, allow user to enter
>    // choice and return this value
>
>
//==========================================================================
====
> //============================== Implementation
> ================================
>
//==========================================================================
====
>
> stacktype::stacktype()
> {
>    mytop = 0;
> }
> void stacktype::initialize()
> {
>    mytop = 0;
> }
> bool stacktype::is_empty()
> {
>    if( mytop == 0 )
>       return true;
>    else
>       return false;
> }
> bool stacktype::is_full()
> {
>    if( mytop == 99 )
>       return true;
>    else
>       return false;
> }
> void stacktype::push( int x )
> {
> if( is_full() == false )
>    {
>       mytop++;
>       mydata[mytop] = x;
>    }
> }
> int stacktype::pop()
> {
>    if( is_empty() == false )
>    {
>       int x = mydata[mytop];
>       mytop--;
>       return x;
>    }
> }
>
>
>
//==========================================================================
====
> //============================== Client Program
> ================================
>
//==========================================================================
====
>
> int menu()
> {
>    int choice;
>    cout<< "STACK EDITOR MENU OPTIONS" << "\n";
>    cout<< "1.  Create new stack" << "\n";
>    cout<< "2.  Add elements to stack" << "\n";
>    cout<< "3.  Delete elements from stack" << "\n";
>    cout<< "4.  Display top element in stack " << "\n";
>    cout<< "5.  Display whole stack in the order entered" << "\n";
>    cout<< "6.  Count numbers of elements in stack" << "\n";
>    cout<< "7.  Exit" << "\n" << "\n";
>    gotoxy(0,8);
>    cout<< "choice? ";
>    cin>> choice;
>    return(choice);
> }
>
> int main()
> {
>    stacktype S, T;
>    int choice, x, i;
>    choice = menu();
>    while( choice != 7 )
>    {
>       switch( choice )
>       {
>          case 1:  S.initialize();
>                   gotoxy(0,8);
>                   cout<< "choice? ";
>                   cin>> choice;
>                   break;
>
>          case 2:  gotoxy(0,10);
>                   while(S.is_full() == false)
>                   {
>                      cout<< "number to insert?  ";
>                      cin>> x;
>                      S.push(x);
>                   }
>                   gotoxy(0,8);
>                   cout<< "choice? ";
>                   cin>> choice;
>                   break;
>
>          case 3:  gotoxy(0,10);
>                   S.pop();
>                   gotoxy(0,8);
>                   cout<< "choice? ";
>                   cin>> choice;
>                   break;
>
>          case 4:  gotoxy(0,12);
>                   display_top(S);
>                   gotoxy(0,8);
>                   cout<< "\n" << "choice? ";
>                   cin>> choice;
>                   break;
>
>          case 5:  display_stack(S);
>                   gotoxy(0,8);
>                   cout<< "choice? ";
>                   cin>> choice;
>                   break;
>
>          case 6:  count_values(S);
>                   cout<< i;
>                   gotoxy(0,8);
>                   cout<< "choice? ";
>                   cin>> choice;
>                   break;
>
>          case 7:  exit();
>                   break;
>
>          choice = menu();
>       }
>    }
> }
>
> void display_top( stacktype S )
> {
>    S.pop();
>    cout<< S.mytop;
> }
>
> void display_stack( stacktype S )
> {
>    stacktype T;
>    while( S.mytop != 0 )
>    {
>       S.pop();
>       T.push(S.mytop);
>    }
>    while( T.mytop != 0 )
>    {
>       cout<< T.pop();
>       T.mytop--;
>    }
> }
>
> int count_values( stacktype S )
> {
>    int i = 0;
>    if(S.mytop != 0)
>    {
>       while(S.mytop != 0)
>       {
>          S.pop();
>          i++;
>       }
>       return i;
>    }
>    ///////     ???????
> }
>
> int exit()
> {
>    return x;
> }
>
> _________________________________________________________________
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>
> _______________________________________________
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> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users

hi, may I know how to display elements and count the number of elements in a 
stack defined below, without destruction? thank you very much!





//	Program:		STACK 2
//	Objective:	To understand how a stack works as implemented by a class
//					and an array for the data
//  Last modified 11-29-01


#include <iostream.h>
#include <conio.h>

const max_stack = 100;

class stacktype
  {
    public:
  		 stacktype();
         	//	default constructor
         	//	postcondition:	initializes stack by setting TOP = 0
         void initialize();
         	//	postcondition:	erase stack by setting TOP = 0
         void push( int );
         	//	postcondition:	If the stack is not full,
            //							increase TOP by 1 , then
            //							put info into DATA[TOP]
         int pop();
         	//	postcondition:	If the stack is not empty,
           	//                 	put DATA[TOP] into x,
            //							decrease TOP by 1,
            //							return x
        	bool is_empty();
         	//	postcondition:	Return true if stack is empty, false otherwise.
         bool is_full();
         	//	postcondition:	Return true if stack is full, false otherwise.
    private:
    		int mydata[max_stack];
         int mytop;			//	subscript of the top of the stack
  };


//==============================================================================
//============================== Free functions 
================================
//==============================================================================

void display_top( stacktype );
	//	precondition:	send in stack
   //	postcondition:	display, without destruction, the value in data[top]
void display_stack( stacktype );
	//	precondition:	send in stack
   //	postcondition:	display, without destruction, the values of all the
   //						elements in the stack, in the order entered.
int count_values( stacktype );
	//	precondition:	send in stack
   //	postcondition:	return the number of data pieces
int menu();
	//	postcondition:	initial screen.  Display options, allow user to enter
   //						choice and return this value

//==============================================================================
//============================== Implementation 
================================
//==============================================================================

stacktype::stacktype()
{
   mytop = 0;
}
void stacktype::initialize()
{
   mytop = 0;
}
bool stacktype::is_empty()
{
   if( mytop == 0 )
      return true;
   else
      return false;
}
bool stacktype::is_full()
{
   if( mytop == 99 )
      return true;
   else
      return false;
}
void stacktype::push( int x )
{
	if( is_full() == false )
   {
      mytop++;
      mydata[mytop] = x;
   }
}
int stacktype::pop()
{
   if( is_empty() == false )
   {
      int x = mydata[mytop];
      mytop--;
      return x;
   }
}


//==============================================================================
//============================== Client Program 
================================
//==============================================================================

int menu()
{
   int choice;
   cout<< "STACK EDITOR MENU OPTIONS" << "\n";
   cout<< "1.  Create new stack" << "\n";
   cout<< "2.  Add elements to stack" << "\n";
   cout<< "3.  Delete elements from stack" << "\n";
   cout<< "4.  Display top element in stack " << "\n";
   cout<< "5.  Display whole stack in the order entered" << "\n";
   cout<< "6.  Count numbers of elements in stack" << "\n";
   cout<< "7.  Exit" << "\n" << "\n";
   gotoxy(0,8);
   cout<< "choice? ";
   cin>> choice;
   return(choice);
}

int main()
{
   stacktype S, T;
   int choice, x, i;
   choice = menu();
   while( choice != 7 )
   {
      switch( choice )
      {
         case 1:  S.initialize();
                  gotoxy(0,8);
                  cout<< "choice? ";
                  cin>> choice;
                  break;

         case 2:  gotoxy(0,10);
                  while(S.is_full() == false)
                  {
                     cout<< "number to insert?  ";
                     cin>> x;
                     S.push(x);
                  }
                  gotoxy(0,8);
                  cout<< "choice? ";
                  cin>> choice;
                  break;

         case 3:  gotoxy(0,10);
                  S.pop();
                  gotoxy(0,8);
                  cout<< "choice? ";
                  cin>> choice;
                  break;

         case 4:  gotoxy(0,12);
                  display_top(S);
                  gotoxy(0,8);
                  cout<< "\n" << "choice? ";
                  cin>> choice;
                  break;

         case 5:  display_stack(S);
                  gotoxy(0,8);
                  cout<< "choice? ";
                  cin>> choice;
                  break;

         case 6:  count_values(S);
                  cout<< i;
                  gotoxy(0,8);
                  cout<< "choice? ";
                  cin>> choice;
                  break;

         case 7:  exit();
                  break;

         choice = menu();
      }
   }
}

void display_top( stacktype S )
{
   S.pop();
   cout<< S.mytop;
}

void display_stack( stacktype S )
{
   stacktype T;
   while( S.mytop != 0 )
   {
      S.pop();
      T.push(S.mytop);
   }
   while( T.mytop != 0 )
   {
      cout<< T.pop();
      T.mytop--;
   }
}

int count_values( stacktype S )
{
   int i = 0;
   if(S.mytop != 0)
   {
      while(S.mytop != 0)
      {
         S.pop();
         i++;
      }
      return i;
   }
   ///////     ???????
}

int exit()
{
   return x;
}

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Jeff -

> > I have installed Dev-C++, and have written a test program, the program
compiles, but when running it, it only flashes quickly on the screen.

Note that Jason's solution,
> If you add #include <cstdlib> at the top and the line: system("PAUSE")
is system-specific and therefore not portable.

It is better to do this:

#include <cstdio>

printf("Press ENTER to continue");
fflush(stdout);
getchar();


Chuck

If you add #include <cstdlib> at the top and the line: system("PAUSE"); just
before the return 0; then before the program finishes a message saying Press
Any Key To Continue will pop up and wait for you.

i.e.

#include <cstdlib>
#include <iostream>

int main()
{
    cout << "Hello World!" << endl;
    system("PAUSE");
    return 0;
}

Jason.

----- Original Message -----
From: "Jeff Clark" <ja...@sp...>
To: "Dev-C++ mailing list" <dev...@li...>
Sent: Thursday, November 29, 2001 3:42 PM
Subject: [Dev-C++] Run Problem


> Hello,
>
> I'm new to C++ development; in fact I'm trying to learn by "Sams Teach
> Yourself C++".
>
> I have installed Dev-C++, and have written a test program, the program
> compiles, but when running it, it only flashes quickly on the screen.
>
> My system is a Pentium III with Windows 2000 installed, the program is
> stated below, as it is in the book:
>
>
>
>  #include <iostream.h>
>
> int main()
> {
> int x = 5;
> int y = 7;
> cout << "\n";
> cout << x + y << " " << x * y;
> cout << "\n";
> return 0;
> }
>
>  ????? What am I doing wrong that the program when executed does not stay
up
> on the screen????
>
>
> Sincerely,
>
> Jeff
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users

You could AND the value you want to test for against the value returned -


if ((GetWindowLong(hwnd,GWL_EX_STYLE) & WS_EX_APPWINDOW) == WS_EX_APPWINDOW)


Kev.


----- Original Message -----
From: dx FX <vin...@ed...>
To: Dev-C++ mailing list <dev...@li...>
Sent: Friday, November 30, 2001 6:05 AM
Subject: RE: Re: [Dev-C++] Win32 shell programming


> Ok I did some researching on what you said... and I found out that I could
retrieve window styles as well as extended styles by using
GetWindowLong(HWND hwnd, int nIndex) which returns long. However I also
remember that window styles(as well as extended ones) can be combined by a
"|". No wonder the following statement(s) would return false for any values
of hwnd passed through EnumWindowsProc when I call EnumWindows:
>
> BOOL IsAppWindow(HWND hwnd) {
>    if (GetWindowLong(hwnd,GWL_EX_STYLE)==WS_EX_APPWINDOW) {
>
>       return true;
>
>    } else {
>
>       return false;
>
>    }
> }
>
> Did I do something wrong? If there is, please tell me. The function is
supposed to detect if a handle refers to a window with the WS_EX_APPWINDOW
style. Note the word WITH which not necesarilly means "ONLY". So how do I
get around this problem?
>
> Note:
>    I have Dev-C++ and Win32 help up and running on my computer while I was
running the program with the afformentioned function. I tried to count the
number of windows with WS_EX_APPWINDOW extended style. But I always end up
with 0. I'm expecting to get an output of greater than 0. How do I get
around this problem?
>
> __________________________________
> www.edsamail.com
>
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>

I do not know win32 api, but you can do it with ANSI C++ if you know the
format of the access file, open it and read the certain places. But this
is very low level. For a more high level way you must use win32 api (or
mfc, e.t.c.).



Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.f2s.com
* Alternative URL: http://run.to/noicys


> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Sten Willemsen
> Sent: Thursday, November 29, 2001 11:40 AM
> To: dev...@li...
> Subject: [Dev-C++] MS Access (Jet)
> 
> 
> Hello list,
> 
> I have learned c++ at universsity but my practical experience 
> is mostly with VB. This is getting more and more inadequate 
> for my purposes however mostly because it is to slow. The 
> compiler is working more or less fine on my computer (I have 
> experiences some crashes of the IDE). For one project of mine 
> I would like to read the fields in an MC Access database. I 
> can't convert it to another format since it is also used by 
> others. NB: I only read to read a few values most of the work 
> goes in doing a series of calculations that depend on them. 
> Can anyone give me a tip how to do this? I would really like 
> to see a working example.
> 
> Sten
> 
> 
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> 

Hello Jeff,

You'll have to put a catch in there to stop the window from closing.  What's 
happening is the program is opening the dos window, executing, then closing 
the dos window when its done.  You see a flashing window :)

Include the header file stdlib.h (#include <stdlib.h>) then add, at the 
bottom of your program before the return statement the command 
"system("pause");"   This will hold the window open for you long enough to 
see the stuff (till you hit a key)

Mike

>My system is a Pentium III with Windows 2000 installed, the program is
>stated below, as it is in the book:
>
>
>
>  #include <iostream.h>
>
>int main()
>{
>int x = 5;
>int y = 7;
>cout << "\n";
>cout << x + y << " " << x * y;
>cout << "\n";
>return 0;
>}
>
>  ????? What am I doing wrong that the program when executed does not stay 
>up
>on the screen????
>
>
>Sincerely,
>
>Jeff
>
>
>
>
>
>
>
>
>
>
>_______________________________________________
>Dev-cpp-users mailing list
>Dev...@li...
>https://lists.sourceforge.net/lists/listinfo/dev-cpp-users


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<html><div style='background-color:'><DIV>
<P>Dev will pop up then down quickly in short programs because the program has executed, finished, and thus destroyed the window.</P>
<P>What I normally do is add something like cin&gt;&gt;x; that way the computer MUST wait for me to push a button to resume and thus exit the program.</P>
<P>oh and it should be #include &lt;iostream.h&gt;</P>
<P>&nbsp;</P>
<P>Hope that helps!<BR><BR></P></DIV>
<DIV></DIV>
<DIV></DIV>&gt;From: "Jeff Clark" <JA...@SP...>
<DIV></DIV>&gt;To: "Dev-C++ mailing list" <DEV...@LI...>
<DIV></DIV>&gt;Subject: [Dev-C++] Run Problem 
<DIV></DIV>&gt;Date: Thu, 29 Nov 2001 07:42:37 -0800 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Hello, 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;I'm new to C++ development; in fact I'm trying to learn by "Sams Teach 
<DIV></DIV>&gt;Yourself C++". 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;I have installed Dev-C++, and have written a test program, the program 
<DIV></DIV>&gt;compiles, but when running it, it only flashes quickly on the screen. 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;My system is a Pentium III with Windows 2000 installed, the program is 
<DIV></DIV>&gt;stated below, as it is in the book: 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; #include <IOSTREAM.H>
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int main() 
<DIV></DIV>&gt;{ 
<DIV></DIV>&gt;int x = 5; 
<DIV></DIV>&gt;int y = 7; 
<DIV></DIV>&gt;cout &lt;&lt; "\n"; 
<DIV></DIV>&gt;cout &lt;&lt; x + y &lt;&lt; " " &lt;&lt; x * y; 
<DIV></DIV>&gt;cout &lt;&lt; "\n"; 
<DIV></DIV>&gt;return 0; 
<DIV></DIV>&gt;} 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; ????? What am I doing wrong that the program when executed does not stay up 
<DIV></DIV>&gt;on the screen???? 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Sincerely, 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Jeff 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;_______________________________________________ 
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<DIV></DIV>&gt;Dev...@li... 
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Hello,

I'm new to C++ development; in fact I'm trying to learn by "Sams Teach
Yourself C++".

I have installed Dev-C++, and have written a test program, the program
compiles, but when running it, it only flashes quickly on the screen.

My system is a Pentium III with Windows 2000 installed, the program is
stated below, as it is in the book:



 #include <iostream.h>

int main()
{
int x = 5;
int y = 7;
cout << "\n";
cout << x + y << " " << x * y;
cout << "\n";
return 0;
}

 ????? What am I doing wrong that the program when executed does not stay up
on the screen????


Sincerely,

Jeff

Ok I did some researching on what you said... and I found out that I could retrieve window styles as well as extended styles by using GetWindowLong(HWND hwnd, int nIndex) which returns long. However I also remember that window styles(as well as extended ones) can be combined by a "|". No wonder the following statement(s) would return false for any values of hwnd passed through EnumWindowsProc when I call EnumWindows:

BOOL IsAppWindow(HWND hwnd) {
   if (GetWindowLong(hwnd,GWL_EX_STYLE)==WS_EX_APPWINDOW) {

      return true;

   } else {

      return false;

   }
}

Did I do something wrong? If there is, please tell me. The function is supposed to detect if a handle refers to a window with the WS_EX_APPWINDOW style. Note the word WITH which not necesarilly means "ONLY". So how do I get around this problem?

Note:
   I have Dev-C++ and Win32 help up and running on my computer while I was running the program with the afformentioned function. I tried to count the number of windows with WS_EX_APPWINDOW extended style. But I always end up with 0. I'm expecting to get an output of greater than 0. How do I get around this problem?

__________________________________
www.edsamail.com

Hello list,

I have learned c++ at universsity but my practical experience is mostly with VB. This is getting more and more inadequate for my purposes however mostly because it is to slow.
The compiler is working more or less fine on my computer (I have experiences some crashes of the IDE). For one project of mine I would like to read the fields in an MC Access database. I can't convert it to another format since it is also used by others. NB: I only read to read a few values most of the work goes in doing a series of calculations that depend on them.
Can anyone give me a tip how to do this? I would really like to see a working example.

Sten

[LONG POST WARNING]

I am trying to build a DLL in Dev-C++... I have a standard install (Version 
4, mingw, with the 4.01 upgrade, and the mingw 1.1 upgrade, but I got same 
problem before I upgraded mingw) so I'm asking here to get an idea of what 
I'm doing wrong, I think it's a user error more than a compiler error... <G>

I started a DLL C++ project, added these two files, print.cpp and print.h.

PRINT.CPP
------------
#include "print.h"

__declspec(dllexport) void printMessage()
{
	// Print out a message
	cout << "message from the .dll" << endl << endl;
}
------------


PRINT.H
------------
#ifndef PRINT_H
#define PRINT_H

#include <iostream>
using namespace std;

__declspec(dllexport) void printMessage();

#endif
------------

When I compile it, I get the following output from the compiler log


COMPILER LOG
------------
Reading specs from D:/DEV-C_~1/BIN/../lib/gcc-lib/mingw32/2.95.3-6/specs
gcc version 2.95.3-6 (mingw special)
D:\DEV-C_~1\BIN\..\lib\gcc-lib\mingw32\2.95.3-6\cpp0.exe -lang-c++ -v -I. 
-ID:\DEV-C_~1\INCLUDE\ -ID:\DEV-C_~1\INCLUDE\G__~1 -ID:\DEV-C_~1\INCLUDE\ 
-iprefix D:\DEV-C_~1\BIN\../lib/gcc-lib/mingw32/2.95.3-6/ -isystem 
D:/DEV-C_~1/BIN/include -D__GNUC__=2 -D__GNUG__=2 -D__GNUC_MINOR__=95 
-D__cplusplus -Di386 -D_WIN32 -DWIN32 -D__WIN32__ -D__MINGW32__=1.0 
-D__MSVCRT__ -DWINNT -D_X86_=1 -D__STDC__=1 
-D__stdcall=__attribute__((__stdcall__)) 
-D_stdcall=__attribute__((__stdcall__)) -D__cdecl=__attribute__((__cdecl__)) 
-D__declspec(x)=__attribute__((x)) -D__i386__ -D_WIN32 -D__WIN32__ 
-D__WIN32__ -D__MINGW32__=1.0 -D__MSVCRT__ -D__WINNT__ -D_X86_=1 
-D__STDC__=1 -D__stdcall=__attribute__((__stdcall__)) 
-D___stdcall__=__attribute__((__stdcall__)) 
-D__cdecl=__attribute__((__cdecl__)) -D__declspec(x)=__attribute__((x)) 
-D__i386 -D__WIN32 -D__WINNT -D___stdcall=__attribute__((__stdcall__)) 
-Asystem(winnt) -Acpu(i386) -Amachine(i386) -D__EXCEPTIONS -H -remap 
-Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ -DBUILDING_DLL=1 
d:\gt\new projects 4\using a dll\printdll\print.cpp 
C:\WIN98\TEMP\ccvrxdfb.ii
GNU CPP version 2.95.3-6 (mingw special) (80386, BSD syntax)
#include "..." search starts here:
#include <...> search starts here:
.
D:/DEV-C_~1/INCLUDE
D:/DEV-C_~1/INCLUDE/G__~1
D:/DEV-C_~1/INCLUDE
D:/DEV-C_~1/BIN/../lib/gcc-lib/mingw32/2.95.3-6/../../../../include
D:/DEV-C_~1/BIN/../lib/gcc-lib/mingw32/2.95.3-6/../../../../mingw32/include
D:/DEV-C_~1/BIN/../lib/gcc-lib/mingw32/2.95.3-6/include
End of search list.
The following default directories have been omitted from the search path:
/mingw/lib/gcc-lib/mingw32/2.95.3-6/../../../../include/g++-3
/usr/local/mingw32/include
End of omitted list.
d:/gt/new projects 4/using a dll/printdll/print.h
D:/DEV-C_~1/INCLUDE/G__~1/iostream
  D:/DEV-C_~1/INCLUDE/G__~1/iostream.h
   D:/DEV-C_~1/INCLUDE/G__~1/streambuf.h
    D:/DEV-C_~1/INCLUDE/G__~1/libio.h
     D:/DEV-C_~1/INCLUDE/_G_config.h
      D:/DEV-C_~1/INCLUDE/stddef.h
D:\DEV-C_~1\BIN\cc1plus.exe C:\WIN98\TEMP\ccvrxdfb.ii -quiet -dumpbase 
print.cc -mwindows -version -o C:\WIN98\TEMP\ccAaD6db.s
GNU C++ version 2.95.2 19991024 (release) (i386-mingw32msvc) compiled by GNU 
C version 2.95.2 19991024 (release).
D:\DEV-C_~1\BIN\as.exe -o print.o C:\WIN98\TEMP\ccAaD6db.s


------------

and the linker output is :



LINKER OUTPUT
--------------
d:\gt\new projects 4\using a dll\printdll\print.o(.text+0x22):print.cpp: 
undefined reference to `endl(ostream &)'
d:\gt\new projects 4\using a dll\printdll\print.o(.text+0x2a):print.cpp: 
undefined reference to `endl(ostream &)'
d:\gt\new projects 4\using a dll\printdll\print.o(.text+0x37):print.cpp: 
undefined reference to `cout'
d:\gt\new projects 4\using a dll\printdll\print.o(.text+0x3c):print.cpp: 
undefined reference to `ostream::operator<<(char const *)'
D:\DEV-C_~1\BIN\dllwrap: no export definition file provided
D:\DEV-C_~1\BIN\dllwrap: creating one, but that may not be what you want
D:\DEV-C_~1\BIN\dllwrap: D:\DEV-C_~1\BIN\gcc exited with status 1

--------------


I've included libstdc++.a in the project options (suggested in the mingw 
forum), but still no go..  Some people (in mingw list) have suggested how to 
do it via the command line, but those options didn't work either.  I would 
really like to learn how to do this through the Dev-C++ IDE, which I'm sure 
somebody has done...

If anyone could enlighten me, I would greatly appreciate it.

Thanks,
Mike


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This should get you all the files you need. I think I know what you are =
talking about with bool.h, apstring right? I had the same problem and =
you just need to comment out the include because I believe (someone help =
out here) that bool.h is included into Dev-C++. I hope that helped.


bana-sea-

  ----- Original Message -----=20
  From: Richard Lund=20
  To: dev...@li...=20
  Sent: Wednesday, November 28, 2001 3:39 PM
  Subject: [Dev-C++] header files


  Hey, what's happening? Does anyone know where I can find AP header =
files and <bool.h> so I can download them? Thanks

  Richard Lund


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<html><div style='background-color:'><DIV>Hey, what's happening? Does anyone know where I can find AP header files and &lt;bool.h&gt; so I can download them? Thanks</DIV>
<DIV>&nbsp;</DIV>
<DIV>Richard Lund</DIV></div><br clear=all><hr>Get your FREE download of MSN Explorer at <a href='http://go.msn.com/bql/hmtag_itl_EN.asp'>http://explorer.msn.com</a><br></html>

I seem to be having a problem using glut on Dev-C++. I
had gotten the same errors(undefined references to
certain functions) using openGL and I later found out
it was that I had not linked the libraries needed.
However, with glut even when I link the correct
libraries I still get undefined references to the glut
functions. Has anyone else been able to get glut to
work on Dev-C++ or know how to get it to work??? I
would appreciate any suggestions....

=====
Julio

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Dev-C++ has some bugs mainly on the IDE, but it provides successfully
the main functionalities. New version will be presumambly even better.
Now as for your NT 4 machine check to see if you have write access in
the account you use to compile both in your project's directory and
Dev-C++ Directories. Also check if you have at least service pack 3
intalled in NT 4. Almost all applications require at least sp3 for
running on NT (sp3 must had some radical new-at-the-time changes).


I hope these will help.


Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.f2s.com
* Alternative URL: http://run.to/noicys


> -----Original Message-----
> From: dev...@li...=20
> [mailto:dev...@li...] On Behalf=20
> Of Alain KOCELNIAK
> Sent: Wednesday, November 28, 2001 6:49 PM
> To: dev...@li...
> Subject: [Dev-C++] Too much bugs in DevC++ ?
>=20
>=20
>  Do you think DevC++ is a good product for an
> engineers school ?
>  I am a teacher of C++ Programming Language.
>  My students are going first to develop little
> programs ( exercices ) and then more complex softwares
> ( with Fltk graphic library ).
> =20
>  My first experience with it is positive ( on my own
>  PC ) but on the PC in the school I can use DevC++ due
>  to this error when I try to compile ( even with a
> very little non-graphic program such as HelloWorld )=20
> : "Could not create code completion list file" ???!!!!
>=20
>  The messages on the mailing-list tend me to think=20
>  that DevC++ have others bugs ...
>=20
>  What is your opinion ?
>  Too much bugs ? or not ?
>=20
>  Thanks for your help.
>=20
> ___________________________________________________________
> Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en=20
> fran=E7ais ! Yahoo! Courrier : http://courrier.yahoo.fr
>=20
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>=20

 Do you think DevC++ is a good product for an
engineers school ?
 I am a teacher of C++ Programming Language.
 My students are going first to develop little
programs ( exercices ) and then more complex softwares
( with Fltk graphic library ).
 
 My first experience with it is positive ( on my own
 PC ) but on the PC in the school I can use DevC++ due
 to this error when I try to compile ( even with a
very little non-graphic program such as HelloWorld ) 
: "Could not create code completion list file" ???!!!!

 The messages on the mailing-list tend me to think 
 that DevC++ have others bugs ...

 What is your opinion ?
 Too much bugs ? or not ?

 Thanks for your help.

___________________________________________________________
Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français !
Yahoo! Courrier : http://courrier.yahoo.fr

I want to install Dev C++ for my students in the
school where I work.

On my own two PCs, DevC++ works fine ( Windows 98,
Windows NT ).
In my school, PC are also under Windows NT 4.0 system.
When I try to compile a very little "Hello World"
program I obtain this
error message : "Could not create code completion list
file".

What does mean this error ?
How can I solve it ?

Thanks for your help.


___________________________________________________________
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does any one know how to change the color of the text
in a dos console, or do graphics, or of anywhere that
has tutorials or information on how to do this?

=====
Julio

__________________________________________________
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----- Original Message -----
From: dev...@li...
Sent: 26 November 2001 20:15
To: dev...@li...
Subject: Dev-cpp-users digest, Vol 1 #533 - 1 msg

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--__--__--

Message: 1
To: dev...@li...
Date: Sun, 25 Nov 2001 14:23:12 -0300 (CLST)
From: lv...@al...
Subject: [Dev-C++] Re: Welcome to the "Dev-cpp-users" mailing list

hello everyone:
i want to known if is possible to use dos.h funtions like  "delay" or "so=
und".

thanx to anyone



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