Here is the compiling process and errors:
C:\Dev-Cpp\bin>gcc.exe c:\Dev-Cpp\OGLSource.c -opengl32
C:\DOCUME~1\Fred\LOCALS~1\Temp/ccAVbaaa.o(.text+0x9f):OGLSource.c: undefined ref
erence to `CreateSolidBrush@4'
C:\DOCUME~1\Fred\LOCALS~1\Temp/ccAVbaaa.o(.text+0xb2):OGLSource.c: undefined ref
erence to `CreateSolidBrush@4'
C:\DOCUME~1\Fred\LOCALS~1\Temp/ccAVbaaa.o(.text+0x1b9):OGLSource.c: undefined re
ference to `ChangeSize'
C:\DOCUME~1\Fred\LOCALS~1\Temp/ccAVbaaa.o(.text+0x1c3):OGLSource.c: undefined re
ference to `IdleFunction'
C:\DOCUME~1\Fred\LOCALS~1\Temp/ccAVbaaa.o(.text+0x1dc):OGLSource.c: undefined re
ference to `RenderScene'
C:\DOCUME~1\Fred\LOCALS~1\Temp/ccAVbaaa.o(.text+0x1ea):OGLSource.c: undefined re
ference to `SwapBuffers@4'
C:\Dev-Cpp\bin>
Here is my code:
/* Creation of a simple Windows API program */
#include <windows.h>
#include <gl/gl.h>
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
char szClassName[ ] = "WindowsApp";
int WINAPI
WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default color as the background of the window */
// Create a blue and red brush for drawing and filling
// operations. // Red, green, blue
HBRUSH hBlueBrush,hRedBrush;
hBlueBrush = CreateSolidBrush(RGB( 0, 0, 255));
hRedBrush = CreateSolidBrush(RGB( 255, 0, 0));
wincl.hbrBackground = hBlueBrush; // Use blue brush for background
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
"Trying to do opengl stuff", /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nFunsterStil);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
// Create a timer that fires every millisecond
//SetTimer(hWnd,101,1,NULL);
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK
WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static HGLRC hRC; // Permanent Rendering context
static HDC hDC; // Private GDI Device context
switch (message) /* handle the messages */
{
// Window is resized.
case WM_SIZE:
// Call our function which modifies the clipping
// volume and viewport
ChangeSize(LOWORD(lParam), HIWORD(lParam));
break;
case WM_TIMER:
{
IdleFunction();
InvalidateRect(hwnd,NULL,FALSE);
}
break;
case WM_PAINT:
{
// Call OpenGL drawing code
RenderScene();
// Call function to swap the buf fers
SwapBuffers(hDC);
// Validate the newly painted client area
ValidateRect(hwnd,NULL);
}
break;
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
What did I do wrong? Thanks… Me6