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#include <Windows.h>
#include <tchar.h>
LRESULT CALLBACK WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hInstancePrev, LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wcex;
HWND window;
TCHAR ClassName[] = _T("OpenGL");
int width = 640, height = 480;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_OWNDC;
wcex.lpfnWndProc = WndProc;
wcex.cbWndExtra = 0;
wcex.cbClsExtra = 0;
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(NULL , IDI_APPLICATION);
wcex.hCursor = LoadCursor(NULL , IDC_ARROW);
wcex.hIconSm = LoadIcon(NULL , IDI_APPLICATION);
wcex.lpszClassName = ClassName;
wcex.lpszMenuName = NULL;
if (!RegisterClassEx(&wcex))
return 1;
window = CreateWindowEx(0, ClassName, _T("openGl test"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, width, height, NULL, NULL, hInstance, NULL);
ShowWindow(window, nCmdShow);
if (!window)
{
MessageBox(NULL,
_T("Call to CreateWindow failed!"),
_T("Win32 Guided Tour"),
NULL);
return 1;
}
return 0;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_CLOSE:
PostQuitMessage(0);
break;
case WM_DESTROY:
return 0;
case WM_KEYDOWN:
{
switch (wParam)
{
case VK_ESCAPE:
PostQuitMessage(0);
break;
}
}
}
return 0;
}
so I don't get why I get error fro:
[code]
if (!window)
{
MessageBox(NULL,
_T("Call to CreateWindow failed!"),
_T("Win32 Guided Tour"),
NULL);
return 1;
}
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