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#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "glu32.lib")
#include "stdafx.h"
#include "resource.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);
void init();
void update();
void paint( HDC );
RECT clientArea;
int screenHeight = 500, screenWidth = 500;
void init()
{
srand( time(NULL) );
glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
gluPerspective( 60, 1, 0.1, 100000 );
glMatrixMode( GL_MODELVIEW );
}
void update()
{}
void paint( HDC hDC )
{
glClear (GL_COLOR_BUFFER_BIT);
glPushMatrix ();
glLoadIdentity();
glColor3f( 0.0f, 0.0f, 1.0f );
glBegin( GL_QUADS );
glVertex2i( 20, -20 );
glVertex2i( 20, -100 );
glVertex2i( 100, -100 );
glVertex2i( 100, -20 );
glEnd();
glPopMatrix ();
SwapBuffers (hDC);
}
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow)
{
WNDCLASS wc;
HWND hWnd;
HDC hDC;
HGLRC hRC;
MSG msg;
BOOL bQuit = FALSE;
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 = "OpenGL Application";
RegisterClass (&wc);
hWnd = CreateWindow ( "OpenGL Applicatione", "OpenGL Application",
WS_CAPTION | WS_POPUPWINDOW | WS_VISIBLE,
100, 0, 512, 512,
NULL, NULL, hInstance, NULL);
EnableOpenGL (hWnd, &hDC, &hRC);
ShowWindow( hWnd, iCmdShow );
init();
while (!bQuit)
{
if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
if (msg.message == WM_QUIT)
bQuit = TRUE;
else
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
else
{
update();
paint( hDC );
Sleep(1);
}
}
DisableOpenGL (hWnd, hDC, hRC);
DestroyWindow (hWnd);
return msg.wParam;
}
LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hDC;
switch (message)
{
case WM_CREATE:
return 0;
case WM_PAINT:
hDC = BeginPaint( hWnd, &ps );
TextOut( hDC, 10, 10, TEXT("Hello World!"), 11 );
//paint( hDC );
EndPaint( hWnd, &ps );
break;
case WM_COMMAND:
switch(LOWORD(wParam))
{}
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);
break;
}
}
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);
}
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