K
Hallo miteinander,
der Code sieht etwa so aus...
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wndclass;
wndclass.cbSize = sizeof(WNDCLASSEX);
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hInstance = hInstance;
wndclass.lpfnWndProc = MainWndProc;
wndclass.lpszClassName = TEXT("3dTest_OpenGL");
wndclass.lpszMenuName = TEXT("TestProg");
wndclass.style = CS_HREDRAW | CS_VREDRAW;
if (!RegisterClassEx(&wndclass))
{
MessageBox(0, "Programm arbeitet mit Unicode und setzt windows NT voraus!", "3dTest_OpenGL", MB_OK | MB_SYSTEMMODAL | MB_ICONERROR);
return 0;
}
wndclass.hIcon = 0;
wndclass.hIconSm = 0;
wndclass.lpfnWndProc = GLWndProc;
wndclass.lpszClassName = TEXT("GL_Window");
wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wndclass.hbrBackground = 0;
if (!RegisterClassEx(&wndclass))
{
MessageBox(0, "Programm arbeitet mit Unicode und setzt windows NT voraus!", "GL_Window", MB_OK | MB_SYSTEMMODAL | MB_ICONERROR);
return 0;
}
HWND hWnd = CreateWindow(TEXT("3dTest_OpenGL"), TEXT("3d Test OpenGL"), WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, 0, 0, hInstance, 0);
if (!hWnd)
{
MessageBox(0, TEXT("Die Erzeugung des Anwendungsfensters ist fehlgeschlagen!"), TEXT("3d Test OpenGL"), MB_OK | MB_SYSTEMMODAL | MB_ICONERROR);
return 0;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
MSG msg;
BOOL bRet = false;
HACCEL hAccel = LoadAccelerators(hInstance, TEXT("TestProg"));
while (bRet = GetMessage(&msg, 0, 0, 0))
{
if (bRet == -1)
{
MessageBox(hWnd, TEXT("Fehler in der Nachrichtenschlange!"), TEXT("3d Test OpenGL"), MB_OK | MB_ICONERROR);
return 0;
}
else if (hDlgRefine == 0 || !IsDialogMessage(hDlgRefine, &msg))
{
if (!TranslateAccelerator(hWnd, hAccel, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
return int(msg.wParam);
}
LRESULT CALLBACK MainWndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
static HWND hGLWnd;
static HINSTANCE hInst; // handle to the main-window
static int cxClient, cyClient; // Window client size
static int numElements; // anzahl an elementen
switch(Msg)
{
case WM_CREATE:
hInst = ((LPCREATESTRUCT)lParam)->hInstance;
hGLWnd = CreateWindow(TEXT("GL_Window"), 0, WS_CHILDWINDOW | WS_VISIBLE,
0, 0, 0, 0, hWnd, (HMENU)1, hInst, 0);
// ... Weiterer Code ...
return 0;
case WM_SIZE:
cxClient = LOWORD(lParam)/2; // set new client width
cyClient = HIWORD(lParam); // set new client hight
MoveWindow(hGLWnd, LOWORD(lParam)/2, 0, LOWORD(lParam)/2, HIWORD(lParam), TRUE);
return 0;
// ... weitere Messages ...
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hWnd, Msg, wParam, lParam);
}
LRESULT CALLBACK GLWndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
static PIXELFORMATDESCRIPTOR pdf;
pdf.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pdf.nVersion = 1;
pdf.dwFlags = PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
pdf.iPixelType = PFD_TYPE_RGBA;
pdf.cColorBits = 16;
pdf.cRedBits = 0;
pdf.cRedShift = 0;
pdf.cGreenBits = 0;
pdf.cGreenShift = 0;
pdf.cBlueBits = 0;
pdf.cBlueShift = 0;
pdf.cAlphaBits = 0;
pdf.cAlphaShift = 0;
pdf.cAccumBits = 0;
pdf.cAccumRedBits = 0;
pdf.cAccumGreenBits = 0;
pdf.cAccumBlueBits = 0;
pdf.cAccumAlphaBits = 0;
pdf.cDepthBits = 16;
pdf.cStencilBits = 0;
pdf.cAuxBuffers = 0;
pdf.iLayerType = PFD_MAIN_PLANE;
pdf.bReserved = 0;
pdf.dwLayerMask = 0;
pdf.dwVisibleMask = 0;
pdf.dwDamageMask = 0;
static HDC hdc = 0;
static HGLRC rc = 0;
static int PixelFormat = 0;
switch(Msg)
{
case WM_CREATE:
if (!(hdc = GetDC(hWnd)))
{
MessageBox(hWnd, TEXT("Unable to create a device context for the GL window!"),
TEXT("Error"), MB_OK | MB_ICONERROR);
DestroyWindow(GetParent(hWnd));
}
if (!(PixelFormat = ChoosePixelFormat(hdc, &pdf)))
{
MessageBox(hWnd, TEXT("Unable to find a suitable pixel format!"),
TEXT("Error"), MB_OK | MB_ICONERROR);
DestroyWindow(GetParent(hWnd));
}
if (!SetPixelFormat(hdc, PixelFormat, &pdf))
{
MessageBox(hWnd, TEXT("Unable to set the pixel format!"),
TEXT("Error"), MB_OK | MB_ICONERROR);
DestroyWindow(GetParent(hWnd));
}
if (!(rc = wglCreateContext(hdc)))
{
MessageBox(hWnd, TEXT("Unable to get a rendering context!"),
TEXT("Error"), MB_OK | MB_ICONERROR);
DestroyWindow(GetParent(hWnd));
}
if (!wglMakeCurrent(hdc, rc))
{
MessageBox(hWnd, TEXT("Unable to make the rendering context current!"),
TEXT("Error"), MB_OK | MB_ICONERROR);
DestroyWindow(hWnd);
}
if (!InitGL())
{
MessageBox(hWnd, TEXT("Initialization failed."),
TEXT("Error"), MB_OK | MB_ICONEXCLAMATION);
DestroyWindow(GetParent(hWnd));
}
return 0;
case WM_SIZE:
ResizeGlScene(LOWORD(lParam), HIWORD(lParam));
return 0;
case WM_PAINT:
DrawGLScene();
SwapBuffers(hdc);
return 0;
case WM_DESTROY:
KillGlWindow(hWnd, hdc, rc);
}
return DefWindowProc(hWnd, Msg, wParam, lParam);
}
void KillGlWindow(HWND hWnd, HDC hdc, HGLRC rc)
{
if (rc)
{
if (!wglMakeCurrent(0, 0))
MessageBox(0, TEXT("Release of dc and rc failed."),
TEXT("SHUTDOWN ERROR"), MB_OK | MB_ICONINFORMATION);
if (!wglDeleteContext(rc))
MessageBox(0, TEXT("Release rendering context failed."),
TEXT("SHUTDOWN ERROR"), MB_OK | MB_ICONINFORMATION);
rc = 0;
}
if (hdc && !ReleaseDC(hWnd, hdc))
{
MessageBox(0, TEXT("Release device context failed."),
TEXT("SHUTDOWN ERROR"), MB_OK | MB_ICONINFORMATION);
hdc = 0;
}
}
hilft das weiter ?
Danke im Voraus
Mfg
Knecht
