dev-cpp-users — Dev-C++ users discussion list

Re: [Dev-C++] nested loop

[<Tre...@ao...>]

Thank you for your help  :)  I am now trying to reverse the pattern and I am 
getting an infinite loop.....can you see what is wrong.....it looks fine to 
me.

#include<iostream>
#include<string>
using namespace std;


int main()

{
   int pattern = 0;
   int lines = 0;
   int stars;

   cout << "Enter 1 for pattern1 or 2 for pattern2: " << endl;
   cin >> pattern;

   if (pattern == 1)
   {
      lines = 9;
      while (lines > 0)
      {
        stars = lines;
      while (stars > 0)
      {
        putchar('*');
        stars--;
      }
      putchar('\n');
      lines--;
      }
       
   }
   else if (pattern == 2)
   {
      lines = 9;
      stars = 1;
      while (lines > 0)
   {
        putchar('*');
        stars++;
          
      while (stars < 10)
      {
        putchar('\n');
        lines--;
      }
     
   } 
       
   } //end if

return 0;
}

RE: [Dev-C++] [Dev C++] istreambuf_iterator not present in Dev-C++ ?

[Ioannis V. <no...@ya...>]

Compiler was released at 24 October 1999. Be patient to wait for the new
gcc 3.0 port for windows...


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 Jeethu Rao
> Sent: Friday, July 20, 2001 10:57 AM
> To: Dev CPP Mailing List
> Subject: [Dev-C++] [Dev C++] istreambuf_iterator not present 
> in Dev-C++ ?
> 
> 
> Hi,
> I'm just learning STL. I tried running an example
> from Bruce Eckel's book "Thinking in C++".
> 
> This particular example uses istreambuf_iterator .
> When I change all occurance of istreambuf_iterator to 
> istream_iterator, the code works.
> 
> Is the version of STL which comes with Dev-C++ old ?
> I'm using Dev-C++ 4.00 Do I need to upgrade ?
> 
> Please Suggest
> 
> Jeethu Rao
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> 

[Dev-C++] [Dev C++] istreambuf_iterator not present in Dev-C++ ?

[Jeethu R. <je...@sa...>]

Hi,
I'm just learning STL. I tried running an example
from Bruce Eckel's book "Thinking in C++".

This particular example uses istreambuf_iterator .
When I change all occurance of istreambuf_iterator to
istream_iterator, the code works.

Is the version of STL which comes with Dev-C++ old ?
I'm using Dev-C++ 4.00 Do I need to upgrade ?

Please Suggest

Jeethu Rao

RE: [Dev-C++] nested loop

[Ioannis V. <no...@ya...>]

#include <iostream>
 
int main()
{
 using std::cout;
 using std::endl;
 
 for(int i=0; i<9; i++)
 {
  for(int j=9-i; j>0; j--)
     cout<<'*';
  
  cout<<endl;
 }
 
} 
 
 
Ioannis
 
* Ioannis Vranos
* Programming pages: http://www.noicys.f2s.com
<http://www.noicys.f2s.com/> 
* Alternative URL: http://run.to/noicys

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of
Tre...@ao...
Sent: Thursday, July 19, 2001 7:35 PM
To: dev...@li...
Subject: [Dev-C++] nested loop


I have to write a program that uses a nested while loop in order to
display 
lines of asterisks from 9 to 1.  Here is the code.....can anyone help
me?  I 
don't understand how to make this work. 
#include<iostream> 

int main() 
{ 
int asterisk = 9; 
int counter = 9; 
char ast = '*'; 

asterisk = (asterisk * ast); 

while (counter > 0) 
{ 
cout << asterisk << endl; 
counter = counter - 1; 
asterisk = asterisk - ast; 
while (asterisk > 0) 
{ 
cout << "*" << "" << endl; 
} 
} 

return 0; 
} 

RE: [Dev-C++] nested loop

[Schedler, K. <Kur...@hi...>]

I have to wonder why you multiplied 9 times the asterisk character.  I can
only presume you thought that would give you nine asterisks in a row.  I
imagine that your code spit out a strange number and then hit an infinite
loop, continuously printing asterisks to the screen.
 
int main()
{
   int lines = 9;
   int stars;
 
   while (lines > 0)
   {
      stars = lines;
      while (stars > 0)
      {
         putchar('*');
         stars--;
      }
      putchar('\n');
      lines--;
   }
 
   return 0;
}
 
which gives this output:
 
*********
********
*******
******
*****
****
***
**
*



-----Original Message-----
From: Tre...@ao... [mailto:Tre...@ao...]
Sent: Thursday, July 19, 2001 10:35 AM
To: dev...@li...
Subject: [Dev-C++] nested loop


I have to write a program that uses a nested while loop in order to display 
lines of asterisks from 9 to 1.  Here is the code.....can anyone help me?  I

don't understand how to make this work. 
#include<iostream> 

int main() 
{ 
int asterisk = 9; 
int counter = 9; 
char ast = '*'; 

asterisk = (asterisk * ast); 

while (counter > 0) 
{ 
cout << asterisk << endl; 
counter = counter - 1; 
asterisk = asterisk - ast; 
while (asterisk > 0) 
{ 
cout << "*" << "" << endl; 
} 
} 

return 0; 
} 



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[Dev-C++] nested loop

[<Tre...@ao...>]

I have to write a program that uses a nested while loop in order to display 
lines of asterisks from 9 to 1.  Here is the code.....can anyone help me?  I 
don't understand how to make this work.
#include<iostream>

int main()
{
    int asterisk = 9;
    int counter = 9;
    char ast = '*';

    asterisk = (asterisk * ast);

    while (counter > 0)
    {
        cout << asterisk << endl;
        counter = counter - 1;
        asterisk = asterisk - ast;
        while (asterisk > 0)
        {
            cout << "*" << "" << endl;
        }
    }

return 0;
}

Re: [Dev-C++] Malloc Problem

[Luigi S. <gi...@li...>]

Iuri-
Suppose that your problem is the following: you have a text file (say it=20
"script") with lines of different lengths, you wish to load a line and=20
print it on the screen until all the lines have been processed.

script
------
aaaaaa
bbbbb
iuri
------

1- assume that you know that no line has more than 10 chars
Here is how I would solve it.

#include <stdio.h>
#include <assert.h>

#define MAX_LEN 11
#define FILE_NAME "script"

int main()
{
    char buf[MAX_LEN];
    FILE *inp =3D fopen(FILE_NAME, "r");

    assert(inp !=3D 0); /* a quick way to report errors */

    while (fgets(buf, MAX_LEN, inp))
       printf("%s", buf);

    fclose(inp);

    return 0;
}

As you can see the second argument of fgets is the size of the array where=
=20
the line will be stored, not the size of the line that will be read. Also=20
keep in mind that fgets will read only MAX_LEN - 1 =3D 10 chars, the last=
 one=20
will be used by fgets as the place for the '\0'.
So when you write:

fgets(linha1_ptr, sizeof(linha1_ptr), script);

It is "strange" (because usually you already know how big a string is), but=
=20
OK, if by "sizeof(linha1_ptr)" you mean the length of the string linha1_ptr=
=20
before the call to fgets, it is not correct if you mean: "read the line and=
=20
get its length, return this length as the value of sizeof(linha1_ptr)".

Suppose you say: (assume linha1_ptr is an array of 31 chars)

fgets(linha1_ptr, 31, script); /* and load the string "123\n" */
/* now sizeof(linha1_ptr) is 4 */

fgets(linha1_ptr, sizeof(linha1_ptr), script); /* trying to load "iuri\n" */
/* fgets will read 3 chars, "iur", the fourth will be '\0' */


Of course when you say:

fgets(linha1_ptr, 31, script); /* and load the string "123\n" */
fgets(linha1_ptr, 31, script); /* trying to load "iuri\n" */
/* now "iuri" will be loaded as expected */

Hope this clearly explains what should be used as the second argument of=
 fgets.

2 - assume that you do not know the size of the biggest line
Here is how I would solve it.

#include <stdio.h>
#include <assert.h>
#include <string.h>

#define FILE_NAME "script"
char *getline(FILE *);

int main(int argc, char *argv[])
{
    char *buf;
    FILE *inp =3D fopen(FILE_NAME, "r");

    assert(inp !=3D 0);

    while (buf =3D getline(inp))
    {
       printf("%s", buf);
       free(buf);
    }

    fclose(inp);
    return 0;
}

/*
getline =3D read a line from the file, return the line read.
The string that is returned is always terminated by a '\n'
*/

#define SIZE 6
#define GET_MEM (char *)calloc(len + 1, sizeof(char))

char *getline(FILE *file)
{
    char buf[SIZE];
    char *line =3D 0;
    int len =3D 0;

    while (fgets(buf, SIZE, file))
    {
       char *tmp =3D line;
       int n =3D strlen(buf);

       len +=3D n;
       line =3D GET_MEM;
       assert(line !=3D 0);

       if (tmp)
       {
          strcpy(line, tmp);
          free(tmp);
       }

       strcat(line, buf);

       if (buf[n - 1] =3D=3D '\n') /* finished reading line */
          break;
    }

    return line;
}

Hope this is of some help

At 14.46 18/07/01 -0300, you wrote:

>Dear Luigi,
>         Thank you for your help. I tried to use calloc because de string=
=20
> read from the
>file string has diferent sizes. I.e. the first line of the file script is=
=20
>"iuri", when I write:
>fgets (linha1_ptr ,sizeof(linha1_ptr), script);
>         It returns: iur
>If I write:
>fgets (linha1_ptr , 30 , script);
>         It returns: iuri
>
>With static memory the problem is that it reads the hole thing:
>So if my string is:
>         aaaaaaaaaa
>         bbbb
>With the fgets it will read:
>         aaaaaaaaaa
>         bbbb\0aaaa
>
>I think with sizeof it shouldn't happen, but it does. He reads the size of=
=20
>the 1=BA line and
>returns this same size for every line, even if it's bigger.
>
>                                 Thanks,
>                                                 Iuri

---
gisan

[Dev-C++] Re: Solved OpenGL compilation problems

[<RPG...@ao...>]

The only thing I needed to do was include the windows.h header.  I don't know why that solved the problem... but it did.

[Dev-C++] Malloc Problem

[Iuri K. <IK...@am...>]

Dear Luigi,
	Thank you for your help. I tried to use calloc because de string
read from the
file string has diferent sizes. I.e. the first line of the file script =
is
"iuri", when I write:
fgets (linha1_ptr ,sizeof(linha1_ptr), script);
	It returns: iur
If I write:
fgets (linha1_ptr , 30 , script);
	It returns: iuri

With static memory the problem is that it reads the hole thing:
So if my string is:
	aaaaaaaaaa
	bbbb
With the fgets it will read:
	aaaaaaaaaa
	bbbb\0aaaa

I think with sizeof it shouldn't happen, but it does. He reads the size =
of
the 1=BA line and
returns this same size for every line, even if it's bigger.

				Thanks,
						Iuri

Date: Tue, 17 Jul 2001 19:46:44 +0200
To: dev...@li...
From: Luigi Santillo <gi...@li...>
Subject: Re: [Dev-C++] Malloc Problem
Reply-To: dev...@li...

In a C program you can ask for memory in a "static fashion" (i.e. at=20
compile time) and in a "dynamic fashion" (i.e. at execution time).

When you define "linha1" by the line:

char linha1[31];  /* 1 is for the terminating '\0' */

you are using static memory, this means that linha1 will be made of 30=20
chars during the whole execution, and its size is known at compile =
time.

If you wish to use dynamic memory, then I suggest you use calloc =
instead of=20
malloc (calloc is for arrays)

char *linha1;
...
linha1 =3D (char *)calloc(31, sizeof(char)); /* 1 is for the =
terminating '\0'
*/

When you no longer need the dynamically allocated variable linha1, you=20
should release the memory by the following:

free(linha1);

Dynamic memory is used when the size of the string is not known in =
advance,=20
since in your code, you already know that no string has more than 30 =
chars,=20
you should use static memory.

In my opinion your code should be:
---
#define MAX_SIZE 31
char linha1[MAX_SIZE];
...
fgets(linha1, MAX_SIZE, script);
...
---

At 12.51 17/07/01 -0300, you wrote:

>I can't find any tutorial about Malloc for strings.
>I want to read a string (line) from a file named 'script'. Each line =
has=20
>one string with diferent size.
>The MAX string will have 30 chars.
>I know it is very simple, but I can't find the solution.
>         Thanks,
>                         Iuri
>---------
>   char linha1 [30];
>   char *linha1_ptr =3D linha1;
>   linha1_ptr =3D malloc (30);
>...
>              fgets (linha1_ptr , sizeof(linha1_ptr) , script);
>              printf(linha1_ptr,"\n");
>              fputs(linha1_ptr, tudo);
>              write(sockfd, linha1_ptr, sizeof(linha1_ptr));
>              write(sockfd, "\n\r",2);
>------------

---
gisan




--__--__--

[Dev-C++] windows apps

[Jarred <sto...@ya...>]

Hellow I am new on this list and have a question about dev c++. I am trying
to learn using this program to program in C. What is all the code if I chose
windows project it throws in and what will give me a simple doss binary
under the type of project? Thanks for any help. Also in that big mess of
code that is automaticly put in for windows apps where do I put my own code.
----- Original Message -----
From: "Julio Lajara" <ju2...@ya...>
To: <dev...@li...>
Sent: Wednesday, July 18, 2001 11:47 AM
Subject: [Dev-C++] RE: Trouble compiling OpenGL apss


> If you downloaded the complete package of Dev-C++ it
> should have already come with GLUT. I dont know if you
> wrote the code you are having trouble with yourself or
> if you edited the sample code from gamdev.net, but
> here is one of my openGL apps that compiles fine with
> "-lkernel32 -lopengl32 -lglu32 -lglaux" in the project
> options, but I think it has to be a Win32 project
> compiled in C++ with .cpp source code file to work:
>
> #include <windows.h> // Header File For Windows
> #include <gl\gl.h> // Header File For The
> OpenGL32 Library
> #include <gl\glu.h> // Header File For The
> GLu32 Library
> #include <gl\glaux.h> // Header File For The
> GLaux Library
>
> HGLRC hRC=NULL; // Permanent Rendering Context
> HDC     hDC=NULL; // Private GDI Device Context
> HWND hWnd=NULL; // Holds Our Window Handle
> HINSTANCE hInstance; // Holds The Instance Of
> The Application
>
> bool keys[256]; // Array Used For The Keyboard
> Routine
> bool active=TRUE; // Window Active Flag Set To
> TRUE By Default
> bool fullscreen=TRUE; // Fullscreen Flag Set To
> Fullscreen Mode By Default
>
> LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
> // Declaration For WndProc
>
> GLvoid ReSizeGLScene(GLsizei width, GLsizei height)
> // Resize And Initialize The GL Window
> {
> if (height==0) // Prevent A Divide By Zero By
> {
> height=1; // Making Height Equal One
> }
>
> glViewport(0, 0, width, height); // Reset The
> Current Viewport
>
>     glMatrixMode(GL_PROJECTION); // Select The
> Projection Matrix
> glLoadIdentity(); // Reset The Projection
> Matrix
>
> // Calculate The Aspect Ratio Of The Window
>
> gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
>
> glMatrixMode(GL_MODELVIEW);         // Select
> The Modelview Matrix
> glLoadIdentity();             // Reset The
> Modelview Matrix
> }
>
> int InitGL(GLvoid)             // All Setup For
> OpenGL Goes Here
> {
>     glShadeModel(GL_SMOOTH);         // Enables
> Smooth Shading
>     glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // Black
> Background
>     glClearDepth(1.0f); // Depth Buffer Setup
> glEnable(GL_DEPTH_TEST); // Enables Depth
> Testing
> glDepthFunc(GL_LEQUAL); // The Type Of Depth
> Test To Do
>     glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
> // Really Nice Perspective Calculations
>     return TRUE; // Initialization Went OK
> }
>
> int DrawGLScene(GLvoid) // Here's Where We Do
> All The Drawing
> {
> glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
> // Clear The Screen And The Depth Buffer
> glLoadIdentity(); // Reset The Current
> Modelview Matrix
>     glTranslatef(-1.5f,0.0f,-6.0f); // Move Left
> 1.5 Units And Into The Screen 6.0
> glBegin(GL_TRIANGLES); // Drawing Using
> Triangles
> glVertex3f( 0.0f, 1.0f, 0.0f); // Top
> glVertex3f(-1.0f,-1.0f, 0.0f); // Bottom Left
> glVertex3f( 1.0f,-1.0f, 0.0f); // Bottom Right
> glEnd(); // Finished Drawing The Triangle
> glTranslatef(3.0f,0.0f,0.0f); // Move Right 3
> Units
> glBegin(GL_QUADS); // Draw A Quad
> glVertex3f(-1.0f, 1.0f, 0.0f); // Top Left
> glVertex3f( 1.0f, 1.0f, 0.0f); // Top Right
> glVertex3f( 1.0f,-1.0f, 0.0f); // Bottom Right
> glVertex3f(-1.0f,-1.0f, 0.0f); // Bottom Left
> glEnd(); // Done Drawing The Quad
> return TRUE; // Everything Went OK
> }
>
> GLvoid KillGLWindow(GLvoid) // Properly Kill The
> Window
> {
>
> if (fullscreen) // Are We In Fullscreen Mode?
> {
> ChangeDisplaySettings(NULL,0); // If So Switch
> Back To The Desktop
> ShowCursor(TRUE); // Show Mouse Pointer
> }
>
> if (hRC) // Do We Have A Rendering Context?
> {
>
> if (!wglMakeCurrent(NULL,NULL)) // Are We Able
> To Release The DC And RC Contexts?
> {
> MessageBox(NULL,"Release Of DC And RC
> Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
> }
>
> if (!wglDeleteContext(hRC)) // Are We Able To
> Delete The RC?
> {
> MessageBox(NULL,"Release Rendering Context
> Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
> }
> hRC=NULL; // Set RC To NULL
> }
>
> if (hDC && !ReleaseDC(hWnd,hDC)) // Are We Able
> To Release The DC
> {
> MessageBox(NULL,"Release Device Context
> Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
> hDC=NULL; // Set DC To NULL
> }
>
> if (hWnd && !DestroyWindow(hWnd)) // Are We Able
> To Destroy The Window?
> {
> MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN
> ERROR",MB_OK | MB_ICONINFORMATION);
> hWnd=NULL; // Set hWnd To NULL
> }
>
> if (!UnregisterClass("OpenGL",hInstance)) // Are We
> Able To Unregister Class
> {
> MessageBox(NULL,"Could Not Unregister
> Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
> hInstance=NULL; // Set hInstance To NULL
> }
> }
>
> BOOL CreateGLWindow(char* title, int width, int
> height, int bits, bool fullscreenflag)
> {
> GLuint PixelFormat; // Holds The Results After
> Searching For A Match
> WNDCLASS wc; // Windows Class Structure
> DWORD dwExStyle; // Window Extended Style
> DWORD dwStyle; // Window Style
> RECT WindowRect; // Grabs Rectangle Upper Left
> / Lower Right Values
> WindowRect.left=(long)0; // Set Left Value To 0
> WindowRect.right=(long)width; // Set Right Value
> To Requested Width
> WindowRect.top=(long)0; // Set Top Value To 0
> WindowRect.bottom=(long)height; // Set Bottom
> Value To Requested Height
> fullscreen=fullscreenflag; // Set The Global
> Fullscreen Flag
> hInstance = GetModuleHandle(NULL); // Grab An
> Instance For Our Window
> wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; //
> Redraw On Move, And Own DC For Window
> wc.lpfnWndProc = (WNDPROC) WndProc; // WndProc
> Handles Messages
> wc.cbClsExtra = 0; // No Extra Window Data
> wc.cbWndExtra = 0; // No Extra Window Data
> wc.hInstance = hInstance; // Set The Instance
> wc.hIcon = LoadIcon(NULL, IDI_WINLOGO); // Load
> The Default Icon
> wc.hCursor = LoadCursor(NULL, IDC_ARROW); // Load
> The Arrow Pointer
> wc.hbrBackground = NULL; // No Background
> Required For GL
> wc.lpszMenuName = NULL; // We Don't Want A Menu
> wc.lpszClassName = "OpenGL"; // Set The Class
> Name
>
> if (!RegisterClass(&wc)) // Attempt To Register
> The Window Class
> {
> MessageBox(NULL,"Failed To Register The Window
> Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
> return FALSE; // Exit And Return FALSE
> }
>
> if (fullscreen) // Attempt Fullscreen Mode?
> {
> DEVMODE dmScreenSettings; // Device Mode
>
> memset(&dmScreenSettings,0,sizeof(dmScreenSettings));
> // Makes Sure Memory's Cleared
> dmScreenSettings.dmSize=sizeof(dmScreenSettings);
> // Size Of The Devmode Structure
> dmScreenSettings.dmPelsWidth = width; // Selected
> Screen Width
> dmScreenSettings.dmPelsHeight = height; //
> Selected Screen Height
> dmScreenSettings.dmBitsPerPel = bits; // Selected
> Bits Per Pixel
>
> dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;
>
> // Try To Set Selected Mode And Get Results.  NOTE:
> CDS_FULLSCREEN Gets Rid Of Start Bar.
> if
>
(ChangeDisplaySettings(&dmScreenSettings,SHOW_FULLSCREEN)!=DISP_CHANGE_SUCCE
SSFUL)
> {
> // If The Mode Fails, Offer Two Options.  Quit Or
> Run In A Window.
> if (MessageBox(NULL,"The Requested Fullscreen Mode
> Is Not Supported By\nYour Video Card. Use Windowed
> Mode Instead?","NeHe
> GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
> {
> fullscreen=FALSE; // Select Windowed Mode
> (Fullscreen=FALSE)
> }
> else
> {
> // Pop Up A Message Box Letting User Know The
> Program Is Closing.
> MessageBox(NULL,"Program Will Now
> Close.","ERROR",MB_OK|MB_ICONSTOP);
> return FALSE; // Exit And Return FALSE
> }
> }
> }
>
> if (fullscreen) // Are We Still In Fullscreen
> Mode?
> {
> dwExStyle=WS_EX_APPWINDOW; // Window Extended
> Style
> dwStyle=WS_POPUP; // Windows Style
> ShowCursor(FALSE); // Hide Mouse Pointer
> }
> else
> {
> dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE; //
> Window Extended Style
> dwStyle=WS_OVERLAPPEDWINDOW; // Windows Style
> }
>
> AdjustWindowRectEx(&WindowRect, dwStyle, FALSE,
> dwExStyle); // Adjust Window To True Requested Size
>
> if (!(hWnd=CreateWindowEx( dwExStyle, // Extended
> Style For The Window
> "OpenGL", // Class Name
> title, // Window Title
> WS_CLIPSIBLINGS | // Required Window Style
> WS_CLIPCHILDREN | // Required Window Style
> dwStyle, // Selected Window Style
> 0, 0, // Window Position
> WindowRect.right-WindowRect.left, // Calculate
> Adjusted Window Width
> WindowRect.bottom-WindowRect.top, // Calculate
> Adjusted Window Height
> NULL, // No Parent Window
> NULL, // No Menu
> hInstance, // Instance
> NULL))) // Don't Pass Anything To WM_CREATE
> {
> KillGLWindow(); // Reset The Display
> MessageBox(NULL,"Window Creation
> Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
> return FALSE; // Return FALSE
> }
>
> static PIXELFORMATDESCRIPTOR pfd= // pfd Tells
> Windows How We Want Things To Be
> {
> sizeof(PIXELFORMATDESCRIPTOR), // Size Of This
> Pixel Format Descriptor
> 1, // Version Number
> PFD_DRAW_TO_WINDOW | // Format Must Support
> Window
> PFD_SUPPORT_OPENGL | // Format Must Support
> OpenGL
> PFD_DOUBLEBUFFER, // Must Support Double
> Buffering
> PFD_TYPE_RGBA, // Request An RGBA Format
> bits, // Select Our Color Depth
> 0, 0, 0, 0, 0, 0, // Color Bits Ignored
> 0, // No Alpha Buffer
> 0, // Shift Bit Ignored
> 0, // No Accumulation Buffer
> 0, 0, 0, 0, // Accumulation Bits Ignored
> 16, // 16Bit Z-Buffer (Depth Buffer)
> 0, // No Stencil Buffer
> 0, // No Auxiliary Buffer
> PFD_MAIN_PLANE, // Main Drawing Layer
> 0, // Reserved
> 0, 0, 0 // Layer Masks Ignored
> };
>
> if (!(hDC=GetDC(hWnd))) // Did We Get A Device
> Context?
> {
> KillGLWindow(); // Reset The Display
> MessageBox(NULL,"Can't Create A GL Device
> Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
> return FALSE; // Return FALSE
> }
>
> if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd))) //
> Did Windows Find A Matching Pixel Format?
> {
> KillGLWindow(); // Reset The Display
> MessageBox(NULL,"Can't Find A Suitable
> PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
> return FALSE; // Return FALSE
> }
>
> if(!SetPixelFormat(hDC,PixelFormat,&pfd)) // Are
> We Able To Set The Pixel Format?
> {
> KillGLWindow(); // Reset The Display
> MessageBox(NULL,"Can't Set The
> PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
> return FALSE; // Return FALSE
> }
>
> if (!(hRC=wglCreateContext(hDC))) // Are We Able
> To Get A Rendering Context?
> {
> KillGLWindow(); // Reset The Display
> MessageBox(NULL,"Can't Create A GL Rendering
> Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
> return FALSE; // Return FALSE
> }
>
> if(!wglMakeCurrent(hDC,hRC)) // Try To Activate
> The Rendering Context
> {
> KillGLWindow(); // Reset The Display
> MessageBox(NULL,"Can't Activate The GL Rendering
> Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
> return FALSE; // Return FALSE
> }
>
> ShowWindow(hWnd,SW_SHOW); // Show The Window
> SetForegroundWindow(hWnd); // Slightly Higher
> Priority
> SetFocus(hWnd); // Sets Keyboard Focus To The
> Window
> ReSizeGLScene(width, height); // Set Up Our
> Perspective GL Screen
>
> if (!InitGL()) // Initialize Our Newly Created
> GL Window
> {
> KillGLWindow(); // Reset The Display
> MessageBox(NULL,"Initialization
> Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
> return FALSE; // Return FALSE
> }
>
> return TRUE; // Success
> }
>
> LRESULT CALLBACK WndProc( HWND hWnd, // Handle For
> This Window
> UINT uMsg, // Message For This Window
> WPARAM wParam, // Additional Message
> Information
> LPARAM lParam) // Additional Message
> Information
> {
>
> switch (uMsg) // Check For Windows Messages
> {
>
> case WM_ACTIVATE: // Watch For Window Activate
> Message
> {
> if (!HIWORD(wParam)) // Check Minimization
> State
> {
> active=TRUE; // Program Is Active
> }
> else
> {
> active=FALSE; // Program Is No Longer Active
> }
>
> return 0; // Return To The Message Loop
> }
>
> case WM_SYSCOMMAND: // Intercept System
> Commands
> {
> switch (wParam) // Check System Calls
> {
> case SC_SCREENSAVE: // Screensaver Trying To
> Start?
> case SC_MONITORPOWER: // Monitor Trying To
> Enter Powersave?
> return 0; // Prevent From Happening
> }
> break; // Exit
> }
>
> case WM_CLOSE: // Did We Receive A Close
> Message?
> {
> PostQuitMessage(0); // Send A Quit Message
> return 0; // Jump Back
> }
>
> case WM_KEYDOWN: // Is A Key Being Held Down?
> {
> keys[wParam] = TRUE; // If So, Mark It As TRUE
> return 0; // Jump Back
> }
>
> case WM_KEYUP: // Has A Key Been Released?
> {
> keys[wParam] = FALSE; // If So, Mark It As
> FALSE
> return 0; // Jump Back
> }
>
> case WM_SIZE: // Resize The OpenGL Window
> {
> ReSizeGLScene(LOWORD(lParam),HIWORD(lParam)); //
> LoWord=Width, HiWord=Height
> return 0; // Jump Back
> }
> }
>
> // Pass All Unhandled Messages To DefWindowProc
> return DefWindowProc(hWnd,uMsg,wParam,lParam);
> }
>
> int WINAPI WinMain( HINSTANCE hInstance, //
> Instance
> HINSTANCE hPrevInstance, // Previous Instance
> LPSTR lpCmdLine, // Command Line Parameters
> int nCmdShow) // Window Show State
> {
>
> MSG msg; // Windows Message Structure
> BOOL done=FALSE; // Bool Variable To Exit Loop
>
> // Ask The User Which Screen Mode They Prefer
> if (MessageBox(NULL,"Would You Like To Run In
> Fullscreen Mode?", "Start
> FullScreen?",MB_YESNO|MB_ICONQUESTION)==IDNO)
> {
> fullscreen=FALSE; // Windowed Mode
> }
>
> // Create Our OpenGL Window
> if (!CreateGLWindow("NeHe's OpenGL
> Framework",640,480,16,fullscreen))
> {
> return 0; // Quit If Window Was Not Created
> }
>
> while(!done) // Loop That Runs Until done=TRUE
> {
>
> if (PeekMessage(&msg,NULL,0,0,PM_REMOVE)) // Is
> There A Message Waiting?
> {
>
> if (msg.message==WM_QUIT) // Have We Received A
> Quit Message?
> {
> done=TRUE; // If So done=TRUE
> }
> else // If Not, Deal With Window Messages
> {
> TranslateMessage(&msg); // Translate The
> Message
> DispatchMessage(&msg); // Dispatch The Message
> }
> }
> else // If There Are No Messages
> {
>
> // Draw The Scene.  Watch For ESC Key And Quit
> Messages From DrawGLScene()
> if (active) // Program Active?
> {
> if (keys[VK_ESCAPE]) // Was ESC Pressed?
> {
> done=TRUE; // ESC Signalled A Quit
> }
> else // Not Time To Quit, Update Screen
> {
>
> DrawGLScene(); // Draw The Scene
> SwapBuffers(hDC); // Swap Buffers (Double
> Buffering)
> }
> }
>
> if (keys[VK_F1]) // Is F1 Being Pressed?
> {
> keys[VK_F1]=FALSE; // If So Make Key FALSE
> KillGLWindow(); // Kill Our Current Window
> fullscreen=!fullscreen; // Toggle Fullscreen /
> Windowed Mode
> // Recreate Our OpenGL Window
> if (!CreateGLWindow("NeHe's OpenGL
> Framework",640,480,16,fullscreen))
> {
> return 0; // Quit If Window Was Not Created
> }
> }
> }
> }
>
> // Shutdown
> KillGLWindow(); // Kill The Window
> return (msg.wParam); // Exit The Program
> }
>
>
> =====
> Julio
>
> __________________________________________________
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>
> _______________________________________________
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[Dev-C++] RE: Trouble compiling OpenGL apss

[Julio L. <ju2...@ya...>]

If you downloaded the complete package of Dev-C++ it
should have already come with GLUT. I dont know if you
wrote the code you are having trouble with yourself or
if you edited the sample code from gamdev.net, but
here is one of my openGL apps that compiles fine with
"-lkernel32 -lopengl32 -lglu32 -lglaux" in the project
options, but I think it has to be a Win32 project
compiled in C++ with .cpp source code file to work:

#include <windows.h>								// Header File For Windows
#include <gl\gl.h>								// Header File For The
OpenGL32 Library
#include <gl\glu.h>								// Header File For The
GLu32 Library
#include <gl\glaux.h>								// Header File For The
GLaux Library

HGLRC		hRC=NULL;							// Permanent Rendering Context
HDC		    hDC=NULL;							// Private GDI Device Context
HWND		hWnd=NULL;							// Holds Our Window Handle
HINSTANCE	hInstance;							// Holds The Instance Of
The Application

bool	keys[256];								// Array Used For The Keyboard
Routine
bool	active=TRUE;								// Window Active Flag Set To
TRUE By Default
bool	fullscreen=TRUE;							// Fullscreen Flag Set To
Fullscreen Mode By Default

LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);	
		// Declaration For WndProc

GLvoid ReSizeGLScene(GLsizei width, GLsizei height)			
// Resize And Initialize The GL Window
{
	if (height==0)								// Prevent A Divide By Zero By
	{
		height=1;							// Making Height Equal One
	}

	glViewport(0, 0, width, height);					// Reset The
Current Viewport

    glMatrixMode(GL_PROJECTION);						// Select The
Projection Matrix
	glLoadIdentity();							// Reset The Projection
Matrix

	// Calculate The Aspect Ratio Of The Window

gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

	glMatrixMode(GL_MODELVIEW);					        	// Select
The Modelview Matrix
	glLoadIdentity();							            // Reset The
Modelview Matrix
}

int InitGL(GLvoid)								            // All Setup For
OpenGL Goes Here
{
    glShadeModel(GL_SMOOTH);						        // Enables
Smooth Shading
    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);					// Black
Background
    glClearDepth(1.0f);							// Depth Buffer Setup
	glEnable(GL_DEPTH_TEST);						// Enables Depth
Testing
	glDepthFunc(GL_LEQUAL);							// The Type Of Depth
Test To Do
    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
		// Really Nice Perspective Calculations
    return TRUE;								// Initialization Went OK
}

int DrawGLScene(GLvoid)								// Here's Where We Do
All The Drawing
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);		
// Clear The Screen And The Depth Buffer
	glLoadIdentity();							// Reset The Current
Modelview Matrix
    glTranslatef(-1.5f,0.0f,-6.0f);					// Move Left
1.5 Units And Into The Screen 6.0
	glBegin(GL_TRIANGLES);						// Drawing Using
Triangles
		glVertex3f( 0.0f, 1.0f, 0.0f);				// Top
		glVertex3f(-1.0f,-1.0f, 0.0f);				// Bottom Left
		glVertex3f( 1.0f,-1.0f, 0.0f);				// Bottom Right
	glEnd();							// Finished Drawing The Triangle
	glTranslatef(3.0f,0.0f,0.0f);					// Move Right 3
Units
	glBegin(GL_QUADS);						// Draw A Quad
		glVertex3f(-1.0f, 1.0f, 0.0f);				// Top Left
		glVertex3f( 1.0f, 1.0f, 0.0f);				// Top Right
		glVertex3f( 1.0f,-1.0f, 0.0f);				// Bottom Right
		glVertex3f(-1.0f,-1.0f, 0.0f);				// Bottom Left
	glEnd();							// Done Drawing The Quad
	return TRUE;								// Everything Went OK
}

GLvoid KillGLWindow(GLvoid)							// Properly Kill The
Window
{

	if (fullscreen)								// Are We In Fullscreen Mode?
	{
		ChangeDisplaySettings(NULL,0);					// If So Switch
Back To The Desktop
		ShowCursor(TRUE);						// Show Mouse Pointer
	}

	if (hRC)								// Do We Have A Rendering Context?
	{

		if (!wglMakeCurrent(NULL,NULL))					// Are We Able
To Release The DC And RC Contexts?
		{
			MessageBox(NULL,"Release Of DC And RC
Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}

		if (!wglDeleteContext(hRC))					// Are We Able To
Delete The RC?
		{
			MessageBox(NULL,"Release Rendering Context
Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		}
		hRC=NULL;							// Set RC To NULL
	}

	if (hDC && !ReleaseDC(hWnd,hDC))					// Are We Able
To Release The DC
	{
		MessageBox(NULL,"Release Device Context
Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hDC=NULL;							// Set DC To NULL
	}

	if (hWnd && !DestroyWindow(hWnd))					// Are We Able
To Destroy The Window?
	{
		MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN
ERROR",MB_OK | MB_ICONINFORMATION);
		hWnd=NULL;							// Set hWnd To NULL
	}

	if (!UnregisterClass("OpenGL",hInstance))			// Are We
Able To Unregister Class
	{
		MessageBox(NULL,"Could Not Unregister
Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hInstance=NULL;									// Set hInstance To NULL
	}
}

BOOL CreateGLWindow(char* title, int width, int
height, int bits, bool fullscreenflag)
{
	GLuint		PixelFormat;						// Holds The Results After
Searching For A Match
	WNDCLASS	wc;							// Windows Class Structure
	DWORD		dwExStyle;						// Window Extended Style
	DWORD		dwStyle;						// Window Style
	RECT WindowRect;							// Grabs Rectangle Upper Left
/ Lower Right Values
	WindowRect.left=(long)0;						// Set Left Value To 0
	WindowRect.right=(long)width;						// Set Right Value
To Requested Width
	WindowRect.top=(long)0;							// Set Top Value To 0
	WindowRect.bottom=(long)height;						// Set Bottom
Value To Requested Height
	fullscreen=fullscreenflag;						// Set The Global
Fullscreen Flag
	hInstance		= GetModuleHandle(NULL);			// Grab An
Instance For Our Window
	wc.style		= CS_HREDRAW | CS_VREDRAW | CS_OWNDC;		//
Redraw On Move, And Own DC For Window
	wc.lpfnWndProc		= (WNDPROC) WndProc;				// WndProc
Handles Messages
	wc.cbClsExtra		= 0;						// No Extra Window Data
	wc.cbWndExtra		= 0;						// No Extra Window Data
	wc.hInstance		= hInstance;					// Set The Instance
	wc.hIcon		= LoadIcon(NULL, IDI_WINLOGO);			// Load
The Default Icon
	wc.hCursor		= LoadCursor(NULL, IDC_ARROW);			// Load
The Arrow Pointer
	wc.hbrBackground	= NULL;						// No Background
Required For GL
	wc.lpszMenuName		= NULL;						// We Don't Want A Menu
	wc.lpszClassName	= "OpenGL";					// Set The Class
Name

	if (!RegisterClass(&wc))						// Attempt To Register
The Window Class
	{
		MessageBox(NULL,"Failed To Register The Window
Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;							// Exit And Return FALSE
	}

	if (fullscreen)								// Attempt Fullscreen Mode?
	{
		DEVMODE dmScreenSettings;					// Device Mode
	
memset(&dmScreenSettings,0,sizeof(dmScreenSettings));	
// Makes Sure Memory's Cleared
		dmScreenSettings.dmSize=sizeof(dmScreenSettings);	
// Size Of The Devmode Structure
		dmScreenSettings.dmPelsWidth	= width;			// Selected
Screen Width
		dmScreenSettings.dmPelsHeight	= height;			//
Selected Screen Height
		dmScreenSettings.dmBitsPerPel	= bits;				// Selected
Bits Per Pixel
	
dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

		// Try To Set Selected Mode And Get Results.  NOTE:
CDS_FULLSCREEN Gets Rid Of Start Bar.
		if
(ChangeDisplaySettings(&dmScreenSettings,SHOW_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
		{
			// If The Mode Fails, Offer Two Options.  Quit Or
Run In A Window.
			if (MessageBox(NULL,"The Requested Fullscreen Mode
Is Not Supported By\nYour Video Card. Use Windowed
Mode Instead?","NeHe
GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
			{
				fullscreen=FALSE;				// Select Windowed Mode
(Fullscreen=FALSE)
			}
			else
			{
				// Pop Up A Message Box Letting User Know The
Program Is Closing.
				MessageBox(NULL,"Program Will Now
Close.","ERROR",MB_OK|MB_ICONSTOP);
				return FALSE;					// Exit And Return FALSE
			}
		}
	}

	if (fullscreen)								// Are We Still In Fullscreen
Mode?
	{
		dwExStyle=WS_EX_APPWINDOW;					// Window Extended
Style
		dwStyle=WS_POPUP;						// Windows Style
		ShowCursor(FALSE);						// Hide Mouse Pointer
	}
	else
	{
		dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;			//
Window Extended Style
		dwStyle=WS_OVERLAPPEDWINDOW;					// Windows Style
	}

	AdjustWindowRectEx(&WindowRect, dwStyle, FALSE,
dwExStyle);		// Adjust Window To True Requested Size

	if (!(hWnd=CreateWindowEx(	dwExStyle,				// Extended
Style For The Window
					"OpenGL",				// Class Name
					title,					// Window Title
					WS_CLIPSIBLINGS |			// Required Window Style
					WS_CLIPCHILDREN |			// Required Window Style
					dwStyle,				// Selected Window Style
					0, 0,					// Window Position
					WindowRect.right-WindowRect.left,	// Calculate
Adjusted Window Width
					WindowRect.bottom-WindowRect.top,	// Calculate
Adjusted Window Height
					NULL,					// No Parent Window
					NULL,					// No Menu
					hInstance,				// Instance
					NULL)))					// Don't Pass Anything To WM_CREATE
	{
		KillGLWindow();							// Reset The Display
		MessageBox(NULL,"Window Creation
Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;							// Return FALSE
	}

	static	PIXELFORMATDESCRIPTOR pfd=					// pfd Tells
Windows How We Want Things To Be
	{
		sizeof(PIXELFORMATDESCRIPTOR),					// Size Of This
Pixel Format Descriptor
		1,								// Version Number
		PFD_DRAW_TO_WINDOW |						// Format Must Support
Window
		PFD_SUPPORT_OPENGL |						// Format Must Support
OpenGL
		PFD_DOUBLEBUFFER,						// Must Support Double
Buffering
		PFD_TYPE_RGBA,							// Request An RGBA Format
		bits,								// Select Our Color Depth
		0, 0, 0, 0, 0, 0,						// Color Bits Ignored
		0,								// No Alpha Buffer
		0,								// Shift Bit Ignored
		0,								// No Accumulation Buffer
		0, 0, 0, 0,							// Accumulation Bits Ignored
		16,								// 16Bit Z-Buffer (Depth Buffer)
		0,								// No Stencil Buffer
		0,								// No Auxiliary Buffer
		PFD_MAIN_PLANE,							// Main Drawing Layer
		0,								// Reserved
		0, 0, 0								// Layer Masks Ignored
	};

	if (!(hDC=GetDC(hWnd)))							// Did We Get A Device
Context?
	{
		KillGLWindow();							// Reset The Display
		MessageBox(NULL,"Can't Create A GL Device
Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;							// Return FALSE
	}

	if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd)))				//
Did Windows Find A Matching Pixel Format?
	{
		KillGLWindow();							// Reset The Display
		MessageBox(NULL,"Can't Find A Suitable
PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;							// Return FALSE
	}

	if(!SetPixelFormat(hDC,PixelFormat,&pfd))				// Are
We Able To Set The Pixel Format?
	{
		KillGLWindow();							// Reset The Display
		MessageBox(NULL,"Can't Set The
PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;							// Return FALSE
	}

	if (!(hRC=wglCreateContext(hDC)))					// Are We Able
To Get A Rendering Context?
	{
		KillGLWindow();							// Reset The Display
		MessageBox(NULL,"Can't Create A GL Rendering
Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;							// Return FALSE
	}

	if(!wglMakeCurrent(hDC,hRC))						// Try To Activate
The Rendering Context
	{
		KillGLWindow();							// Reset The Display
		MessageBox(NULL,"Can't Activate The GL Rendering
Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;							// Return FALSE
	}

	ShowWindow(hWnd,SW_SHOW);						// Show The Window
	SetForegroundWindow(hWnd);						// Slightly Higher
Priority
	SetFocus(hWnd);								// Sets Keyboard Focus To The
Window
	ReSizeGLScene(width, height);						// Set Up Our
Perspective GL Screen

	if (!InitGL())								// Initialize Our Newly Created
GL Window
	{
		KillGLWindow();							// Reset The Display
		MessageBox(NULL,"Initialization
Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;							// Return FALSE
	}

	return TRUE;								// Success
}

LRESULT CALLBACK WndProc(	HWND	hWnd,					// Handle For
This Window
				UINT	uMsg,					// Message For This Window
				WPARAM	wParam,					// Additional Message
Information
				LPARAM	lParam)					// Additional Message
Information
{

	switch (uMsg)								// Check For Windows Messages
	{

		case WM_ACTIVATE:						// Watch For Window Activate
Message
		{
			if (!HIWORD(wParam))					// Check Minimization
State
			{
				active=TRUE;					// Program Is Active
			}
			else
			{
				active=FALSE;					// Program Is No Longer Active
			}

			return 0;						// Return To The Message Loop
		}

		case WM_SYSCOMMAND:						// Intercept System
Commands
		{
			switch (wParam)						// Check System Calls
			{
				case SC_SCREENSAVE:				// Screensaver Trying To
Start?
				case SC_MONITORPOWER:				// Monitor Trying To
Enter Powersave?
				return 0;					// Prevent From Happening
			}
			break;							// Exit
		}

		case WM_CLOSE:							// Did We Receive A Close
Message?
		{
			PostQuitMessage(0);					// Send A Quit Message
			return 0;						// Jump Back
		}

		case WM_KEYDOWN:						// Is A Key Being Held Down?
		{
			keys[wParam] = TRUE;					// If So, Mark It As TRUE
			return 0;						// Jump Back
		}

		case WM_KEYUP:							// Has A Key Been Released?
		{
			keys[wParam] = FALSE;					// If So, Mark It As
FALSE
			return 0;						// Jump Back
		}

		case WM_SIZE:							// Resize The OpenGL Window
		{
			ReSizeGLScene(LOWORD(lParam),HIWORD(lParam));		//
LoWord=Width, HiWord=Height
			return 0;						// Jump Back
		}
	}

	// Pass All Unhandled Messages To DefWindowProc
	return DefWindowProc(hWnd,uMsg,wParam,lParam);
}

int WINAPI WinMain(	HINSTANCE	hInstance,				//
Instance
			HINSTANCE	hPrevInstance,				// Previous Instance
			LPSTR		lpCmdLine,				// Command Line Parameters
			int		nCmdShow)				// Window Show State
{

	MSG	msg;								// Windows Message Structure
	BOOL	done=FALSE;							// Bool Variable To Exit Loop

	// Ask The User Which Screen Mode They Prefer
	if (MessageBox(NULL,"Would You Like To Run In
Fullscreen Mode?", "Start
FullScreen?",MB_YESNO|MB_ICONQUESTION)==IDNO)
	{
		fullscreen=FALSE;						// Windowed Mode
	}

	// Create Our OpenGL Window
	if (!CreateGLWindow("NeHe's OpenGL
Framework",640,480,16,fullscreen))
	{
		return 0;							// Quit If Window Was Not Created
	}

	while(!done)								// Loop That Runs Until done=TRUE
	{

		if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))			// Is
There A Message Waiting?
		{

			if (msg.message==WM_QUIT)				// Have We Received A
Quit Message?
			{
				done=TRUE;					// If So done=TRUE
			}
			else							// If Not, Deal With Window Messages
			{
				TranslateMessage(&msg);				// Translate The
Message
				DispatchMessage(&msg);				// Dispatch The Message
			}
		}
		else								// If There Are No Messages
		{

			// Draw The Scene.  Watch For ESC Key And Quit
Messages From DrawGLScene()
			if (active)						// Program Active?
			{
				if (keys[VK_ESCAPE])				// Was ESC Pressed?
				{
					done=TRUE;				// ESC Signalled A Quit
				}
				else						// Not Time To Quit, Update Screen
				{

					DrawGLScene();				// Draw The Scene
					SwapBuffers(hDC);			// Swap Buffers (Double
Buffering)
				}
			}

			if (keys[VK_F1])					// Is F1 Being Pressed?
			{
				keys[VK_F1]=FALSE;				// If So Make Key FALSE
				KillGLWindow();					// Kill Our Current Window
				fullscreen=!fullscreen;				// Toggle Fullscreen /
Windowed Mode
				// Recreate Our OpenGL Window
				if (!CreateGLWindow("NeHe's OpenGL
Framework",640,480,16,fullscreen))
				{
					return 0;				// Quit If Window Was Not Created
				}
			}
		}
	}

	// Shutdown
	KillGLWindow();								// Kill The Window
	return (msg.wParam);							// Exit The Program
}


=====
Julio

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Re: [Dev-C++] Re: Trouble Compiling OpenGL apps

[Nurhidayat <dh...@ma...>]

At 05:20 PM 7/17/01 EDT, you wrote:
>I searched for and found both _imp__glColor3f@ and _imp__glClear@ in the
libopengl32.a file.  I couldn't understand all the characters in the file,
but those two strings were in it.
>
>Putting -lopengl32 has the same effect as putting
C:\Dev-C++\lib\libopengl32.a further option files box, correct?  They both
result in these error messages.

Yes, putting -lopengl32 has the same effect as putting
C:\Dev-++\lib\libopengl32.a further option files box. 

>Are you using a different version of the libraries than I am?

I use opengl library from Dev-C++ 4.0 installation, and get glut library
from downloadable source Glut-MingW-Dev-C++.Zip size=97.8KB (I forget the
url, but I can sent you that file)



___Nurhidayat___

Re: [Dev-C++] SYSTEM() don't work in Dev-c++ ??

[Nurhidayat <dh...@ma...>]

>I'm trying to use the system() function in dev-c++ ... but it don't work
>....
>Why ?? The system() is a function of stdio.h ?? why it don't work ... please
>show me the correct mode ... if i'm making something wrong ...


system() is a function of stdlib.h

___Nurhidayat___

[Dev-C++] Re: Trouble Compiling OpenGL apps

[<RPG...@ao...>]

I searched for and found both _imp__glColor3f@ and _imp__glClear@ in the libopengl32.a file.  I couldn't understand all the characters in the file, but those two strings were in it.

Putting -lopengl32 has the same effect as putting C:\Dev-C++\lib\libopengl32.a further option files box, correct?  They both result in these error messages.

c:\my documents\simpleglmain.o(.text+0x19):simpleglmain.c: undefined reference to `_imp__glClear'
c:\my documents\simpleglmain.o(.text+0x36):simpleglmain.c: undefined reference to `_imp__glColor3f'
c:\my documents\simpleglmain.o(.text+0x46):simpleglmain.c: undefined reference to `_imp__glBegin'
c:\my documents\simpleglmain.o(.text+0x6e):simpleglmain.c: undefined reference to `_imp__glVertex3f'
c:\my documents\simpleglmain.o(.text+0x96):simpleglmain.c: undefined reference to `_imp__glVertex3f'
c:\my documents\simpleglmain.o(.text+0xbe):simpleglmain.c: undefined reference to `_imp__glVertex3f'
c:\my documents\simpleglmain.o(.text+0xe6):simpleglmain.c: undefined reference to `_imp__glVertex3f'
c:\my documents\simpleglmain.o(.text+0xf1):simpleglmain.c: undefined reference to `_imp__glEnd'
c:\my documents\simpleglmain.o(.text+0xf9):simpleglmain.c: undefined reference to `_imp__glFlush'
c:\my documents\simpleglmain.o(.text+0x121):simpleglmain.c: undefined reference to `_imp__glClearColor'
c:\my documents\simpleglmain.o(.text+0x134):simpleglmain.c: undefined reference to `_imp__glMatrixMode'
c:\my documents\simpleglmain.o(.text+0x13f):simpleglmain.c: undefined reference to `_imp__glLoadIdentity'
c:\my documents\simpleglmain.o(.text+0x170):simpleglmain.c: undefined reference to `_imp__glOrtho'
c:\my documents\simpleglmain.o(.text+0x1a3):simpleglmain.c: undefined reference to `glutInit'
c:\my documents\simpleglmain.o(.text+0x1b0):simpleglmain.c: undefined reference to `glutInitDisplayMode'
c:\my documents\simpleglmain.o(.text+0x1c5):simpleglmain.c: undefined reference to `glutInitWindowSize'
c:\my documents\simpleglmain.o(.text+0x1d4):simpleglmain.c: undefined reference to `glutInitWindowPosition'
c:\my documents\simpleglmain.o(.text+0x1e4):simpleglmain.c: undefined reference to `glutCreateWindow'
c:\my documents\simpleglmain.o(.text+0x1f9):simpleglmain.c: undefined reference to `glutDisplayFunc'
c:\my documents\simpleglmain.o(.text+0x201):simpleglmain.c: undefined reference to `glutMainLoop'

Are you using a different version of the libraries than I am?

[Dev-C++] [DEV-C++]Need help using GDB debugger in Dev-C++

[Julio L. <ju2...@ya...>]

I used the GDB debugger included in Dev-C++ to debug
one of my programs which would constantly crash, no
matter how many things I changed in the code. When I
ran the debugger and it crashed the debugger said the
program got a signal (SIGSEGV I think) and said it was
a segmentation fault. Does anyone know what that is,
what might cause it, or how I can fix it in my code?? 

=====
Julio

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RE:[DEV-C++] Trouble Compiling OpenGL apps

[Julio L. <ju2...@ya...>]

You can use the tutorials on nehe.gamedev.net for
OpenGL and get their sample code to compile perfectly
on Dev-C++, I have done it myself. The only thing is
that you have to make the smaple code projects
yourself, not download the projects they have at the
bottom of the page.

Try this:

1.Create a new project in Dev-C++ with a source file.
2.Go to the NeHe OpenGL tutorial lessons page and copy
all the green lines of code and paste it into your
source code file.
3.Go to Project Options and in the first blank
line(Further Object Files or linker options) put  
" -lkernel32 -lopengl32 -lglu32 -lglaux "
and compile the project.

It should now compile without a problem.

=====
Julio

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Re: [Dev-C++] Malloc Problem

[Luigi S. <gi...@li...>]

In a C program you can ask for memory in a "static fashion" (i.e. at 
compile time) and in a "dynamic fashion" (i.e. at execution time).

When you define "linha1" by the line:

char linha1[31];  /* 1 is for the terminating '\0' */

you are using static memory, this means that linha1 will be made of 30 
chars during the whole execution, and its size is known at compile time.

If you wish to use dynamic memory, then I suggest you use calloc instead of 
malloc (calloc is for arrays)

char *linha1;
...
linha1 = (char *)calloc(31, sizeof(char)); /* 1 is for the terminating '\0' */

When you no longer need the dynamically allocated variable linha1, you 
should release the memory by the following:

free(linha1);

Dynamic memory is used when the size of the string is not known in advance, 
since in your code, you already know that no string has more than 30 chars, 
you should use static memory.

In my opinion your code should be:
---
#define MAX_SIZE 31
char linha1[MAX_SIZE];
...
fgets(linha1, MAX_SIZE, script);
...
---

At 12.51 17/07/01 -0300, you wrote:

>I can't find any tutorial about Malloc for strings.
>I want to read a string (line) from a file named 'script'. Each line has 
>one string with diferent size.
>The MAX string will have 30 chars.
>I know it is very simple, but I can't find the solution.
>         Thanks,
>                         Iuri
>---------
>   char linha1 [30];
>   char *linha1_ptr = linha1;
>   linha1_ptr = malloc (30);
>...
>              fgets (linha1_ptr , sizeof(linha1_ptr) , script);
>              printf(linha1_ptr,"\n");
>              fputs(linha1_ptr, tudo);
>              write(sockfd, linha1_ptr, sizeof(linha1_ptr));
>              write(sockfd, "\n\r",2);
>------------

---
gisan

Re: [Dev-C++] SYSTEM() don't work in Dev-c++ ??

[Luigi S. <gi...@li...>]

First: when you need the function "system" you should include <stdlib.h>. 
then the prototype of "system" says:

int system(const char *s);

this means that you are allowed to pass only one string to "system", in 
other words: "system" resembles "puts" and not "printf".

Try the following:

---
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_BUF 50 /* "echo " and var will surely fit in it */
int main()
{
    char var[15];
    char buf[MAX_BUF];


    printf("\nType the environment that u want see the value: ");
    scanf("%s",&var);
    strcpy(buf, "echo ");
    strcat(buf, var);

    system(buf);

  return(0);
}


At 14.21 17/07/01 -0300, you wrote:
>Hi,
>
>I'm trying to use the system() function in dev-c++ ... but it don't work
>....
>
>I was trying of this mode:
>
>#include <stdio.h>
>#include <conio.h>
>
>int main()
>{
>  char var[15];
>
>  printf("\nType the environment that u want see the value: ");
>  scanf("%s",&var);
>
>  system("echo %s",var);
>
>  return(0);
>}
>
>Then when i try compile this program i get the error:
>
>16 f:\dev-c_~1\untitl~1.cpp
>  implicit declaration of function `int system(...)'
>
>
>Why ?? The system() is a function of stdio.h ?? why it don't work ... please
>show me the correct mode ... if i'm making something wrong ...
>
>thkz
>
>Cheers
>
>[ ]'s
>
>
>_______________________________________________
>Dev-cpp-users mailing list
>Dev...@li...
>http://lists.sourceforge.net/lists/listinfo/dev-cpp-users

---
gisan

[Dev-C++] SYSTEM() don't work in Dev-c++ ??

[Wendel <we...@ha...>]

Hi,

I'm trying to use the system() function in dev-c++ ... but it don't work
....

I was trying of this mode:

#include <stdio.h>
#include <conio.h>

int main()
{
 char var[15];

 printf("\nType the environment that u want see the value: ");
 scanf("%s",&var);

 system("echo %s",var);

 return(0);
}

Then when i try compile this program i get the error:

16 f:\dev-c_~1\untitl~1.cpp
 implicit declaration of function `int system(...)'


Why ?? The system() is a function of stdio.h ?? why it don't work ... please
show me the correct mode ... if i'm making something wrong ...

thkz

Cheers

[ ]'s

[Dev-C++] Malloc Problem

[Iuri K. <IK...@am...>]

I can't find any tutorial about Malloc for strings.
I want to read a string (line) from a file named 'script'. Each line has one
string with diferent size.
The MAX string will have 30 chars.
I know it is very simple, but I can't find the solution.
	Thanks,
			Iuri
---------
  char linha1 [30];
  char *linha1_ptr = linha1;
  linha1_ptr = malloc (30);
...
             fgets (linha1_ptr , sizeof(linha1_ptr) , script);
             printf(linha1_ptr,"\n");
             fputs(linha1_ptr, tudo);
             write(sockfd, linha1_ptr, sizeof(linha1_ptr));
             write(sockfd, "\n\r",2);
------------

Re: [Dev-C++] Trouble Compiling OpenGL apps

[Nurhidayat <dh...@ma...>]

Try search _imp__glClear@ and _imp__glColor3f@ in libopengl32.a file using
your text editor. 

Be carefull. Don't modified by your text editor, because *.a is a binary file.


___Nurhidayat___

Re: [Dev-C++] Trouble Compiling OpenGL apps

[Nurhidayat <dh...@ma...>]

At 01:55 AM 7/17/01 EDT, you wrote:
>I read the faq in the built in help about OpenGL, and put these two
options in the Project/Further Object files
>
>-lopengl32 -lglut32 
>
>I try to compile this source from an OpenGL book, but get many errors.
Skip the code if you want... I doubt that's the problem.

>All the errors I get look like this... so no point in pasting them all.
Different errors for every gl/glut call made in the program.
>
>c:\my documents\simpleglmain.o(.text+0x19):simpleglmain.c: undefined
reference to `_imp__glClear'
>c:\my documents\simpleglmain.o(.text+0x36):simpleglmain.c: undefined
reference to `_imp__glColor3f'
>
>What am I doing wrong?
>

I try recompile your source code, but I don't found any errors.
Two functions: glClear and glColor3f those your compiler reported, are
contained by libopengl32.a library. Try search _imp__glClear@ and
_imp__glColor3f@ in libopengl32.a file using your text editor. If you
wouldn't find them, you may have incomplete/broken library file. If you
find, please check your project options. 
-lopengl32 with ('l' lowercase) is different to -Lopengl32 ('L' uppercase).


___Nurhidayat___

[Dev-C++] Trouble Compiling OpenGL apps

[<RPG...@ao...>]

I read the faq in the built in help about OpenGL, and put these two options in the Project/Further Object files

-lopengl32 -lglut32 

I try to compile this source from an OpenGL book, but get many errors.  Skip the code if you want... I doubt that's the problem.

-------------------------CODE------------------------

#include <GL/glut.h>
#include <GL/gl.h>

void display(void)
{
/*  clear all pixels  */
    glClear (GL_COLOR_BUFFER_BIT);

/*  draw white polygon (rectangle) with corners at
 *  (0.25, 0.25, 0.0) and (0.75, 0.75, 0.0)  
 */
    glColor3f (1.0, 1.0, 1.0);
    glBegin(GL_POLYGON);
        glVertex3f (0.25, 0.25, 0.0);
        glVertex3f (0.75, 0.25, 0.0);
        glVertex3f (0.75, 0.75, 0.0);
        glVertex3f (0.25, 0.75, 0.0);
    glEnd();

/*  don't wait!  
 *  start processing buffered OpenGL routines 
 */
    glFlush ();
}

void init (void) 
{
/*  select clearing (background) color       */
    glClearColor (0.0, 0.0, 0.0, 0.0);

/*  initialize viewing values  */
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
}

/* 
 *  Declare initial window size, position, and display mode
 *  (single buffer and RGBA).  Open window with "hello"
 *  in its title bar.  Call initialization routines.
 *  Register callback function to display graphics.
 *  Enter main loop and process events.
 */
int main(int argc, char** argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
    glutInitWindowSize (250, 250); 
    glutInitWindowPosition (100, 100);
    glutCreateWindow ("hello");
    init ();
    glutDisplayFunc(display); 
    glutMainLoop();
    return 0;   /* ISO C requires main to return int. */
}

-------------------------END CODE------------------------

All the errors I get look like this... so no point in pasting them all.  Different errors for every gl/glut call made in the program.

c:\my documents\simpleglmain.o(.text+0x19):simpleglmain.c: undefined reference to `_imp__glClear'
c:\my documents\simpleglmain.o(.text+0x36):simpleglmain.c: undefined reference to `_imp__glColor3f'

What am I doing wrong?

RE: [Dev-C++] help please

[Jeethu R. <je...@sa...>]

go to www.gamecoding.co.uk 
they have a tutorial on OpenGL with DevC++

Regards,

Jeethu Rao

> -----Original Message-----
> From: dev...@li...
> [mailto:dev...@li...]On Behalf Of Brasier
> Sent: Monday, July 09, 2001 1:37 AM
> To: dev...@li...
> Subject: [Dev-C++] help please
> 
> 
> Hi, 
> 
>  Can someone PLEASE tell me a website that is HTML (no downloads) 
> that can give me a full a-z tutorial on OPEN GL for the DEV C++ 
> compiler...
> i have tried nehe.gamedev.net but that is for visual C++ and i am 
> far too new to translate :)
> 
> Thanks for any info....
> 
> Steve.B
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users

[Dev-C++] Kai Wierzoch/EMD/Merck ist =?iso-8859-1?q?au=DFer_Haus=2E?=

[<Kai...@me...>]

Ich werde ab  16.07.2001 nicht im B=FCro sein. Ich kehre zur=FCck am
17.08.2001.

=