Отсутствие контекста OpenGL
Приложение должно быть оконным, не консольным:
#define _CRT_SECURE_NO_WARNINGS
#include
#include
#include
#include
#pragma comment (lib, "opengl32.lib")
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
int WinMain(__in HINSTANCE hInstance, __in_opt HINSTANCE hPrevInstance, __in_opt LPSTR lpCmdLine, __in int nShowCmd)
{
MSG msg = { 0 };
WNDCLASS wc = { 0 };
wc.lpfnWndProc = WndProc;
wc.hInstance = hInstance;
wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND);
wc.lpszClassName = L"oglversionchecksample";
wc.style = CS_OWNDC;
if (!RegisterClass(&wc))
return 1;
CreateWindowW(wc.lpszClassName, L"openglversioncheck", WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 640, 480, 0, 0, hInstance, 0);
while (GetMessage(&msg, NULL, 0, 0) > 0)
DispatchMessage(&msg);
return 0;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_CREATE:
{
PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR), 1, PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER, PFD_TYPE_RGBA,
32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 8, 0, PFD_MAIN_PLANE, 0, 0, 0, 0
};
HDC ourWindowHandleToDeviceContext = GetDC(hWnd);
int letWindowsChooseThisPixelFormat;
letWindowsChooseThisPixelFormat = ChoosePixelFormat(ourWindowHandleToDeviceContext, &pfd);
SetPixelFormat(ourWindowHandleToDeviceContext, letWindowsChooseThisPixelFormat, &pfd);
HGLRC ourOpenGLRenderingContext = wglCreateContext(ourWindowHandleToDeviceContext);
wglMakeCurrent(ourWindowHandleToDeviceContext, ourOpenGLRenderingContext);
AllocConsole();
freopen("CONIN$", "r", stdin);
freopen("CONOUT$", "w", stdout);
GLint maxModelViewStackDepth = -1;
glGetIntegerv(GL_MAX_MODELVIEW_STACK_DEPTH, &maxModelViewStackDepth);
std::cout << "Maximum ModelView stack depth is " << maxModelViewStackDepth << std::endl;
std::getchar();
wglDeleteContext(ourOpenGLRenderingContext);
PostQuitMessage(0);
}
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
