Opengl WinApi örnek pencere

Opengl Örnek Pencere.rar

#include <windows .h>
#include <gl gl.h>
LRESULT CALLBACK WndProc (HWND hWnd, UINT message,WPARAM wParam, LPARAM lParam);
void EnableOpenGL (HWND hWnd, HDC *hDC, HGLRC *hRC);
void DisableOpenGL (HWND hWnd, HDC hDC, HGLRC hRC); 

int WINAPI WinMain (HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int iCmdShow)
{
WNDCLASS wc;
HWND hWnd;
HDC hDC;
HGLRC hRC;        
MSG msg;
BOOL bQuit = FALSE;
float theta = 0.0f;
wc.style = CS_OWNDC;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor (NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName ="OpenGLTurk";
RegisterClass (&wc);
hWnd = CreateWindow ("OpenGLTurk","OpenGLTurk-Yasin Demirci",WS_CAPTION  |  WS_POPUPWINDOW | WS_VISIBLE | WS_OVERLAPPEDWINDOW ,30, 30,600,200,NULL, NULL, hInstance, NULL);
EnableOpenGL (hWnd, &hDC, &hRC);
while (!bQuit)
{
if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
{
/* mesaj dağıtma*/
if (msg.message == WM_QUIT)
{
bQuit = TRUE;
}
else
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
}
else
{
glClearColor(1.0,1.0,1.0,1.0);
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1.0,0.0,0.0);
   glBegin(GL_TRIANGLE_STRIP);
        glVertex2f(-1,-1);
        glVertex2f(0,1);
  glVertex2f(1,-1);
        
     glEnd();

SwapBuffers (hDC);

theta += 1.0f;
Sleep (1);
}
}
DisableOpenGL (hWnd, hDC, hRC);


DestroyWindow (hWnd);

return msg.wParam;
}
LRESULT CALLBACK WndProc (HWND hWnd, UINT message,WPARAM wParam, LPARAM lParam)
{

switch (message)
{
case WM_CREATE:
return 0;
case WM_CLOSE:
PostQuitMessage (0);
return 0;

case WM_DESTROY:
return 0;

case WM_KEYDOWN:
switch (wParam)
{
case VK_ESCAPE:
PostQuitMessage(0);
return 0;
}
return 0;

default:
return DefWindowProc (hWnd, message, wParam, lParam);
}
}
void EnableOpenGL (HWND hWnd, HDC *hDC, HGLRC *hRC)
{
PIXELFORMATDESCRIPTOR pfd;
int iFormat;
*hDC = GetDC (hWnd);
ZeroMemory (&pfd, sizeof (pfd));
pfd.nSize = sizeof (pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW |PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
pfd.cDepthBits = 16;
pfd.iLayerType = PFD_MAIN_PLANE;
iFormat = ChoosePixelFormat (*hDC, &pfd);
SetPixelFormat (*hDC, iFormat, &pfd);
*hRC = wglCreateContext( *hDC );
wglMakeCurrent( *hDC, *hRC );

}
void DisableOpenGL (HWND hWnd, HDC hDC, HGLRC hRC)
{
wglMakeCurrent (NULL, NULL);
wglDeleteContext (hRC);
ReleaseDC (hWnd, hDC);
}