#include <windows.h>

LRESULT CALLBACK MainWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
	switch (uMsg) {
		case WM_NCPAINT:
			return 0;
		case WM_PAINT:
			return 0;
		case WM_DESTROY:
			PostQuitMessage(0);
			return 0;
	}
	return DefWindowProc(hwnd, uMsg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow ) {
	WNDCLASSEX wndclass = {0};
	wndclass.cbSize = sizeof(WNDCLASSEX);
	wndclass.lpfnWndProc = &MainWndProc;
	wndclass.hInstance = hInstance;
	wndclass.hbrBackground = (HBRUSH) (COLOR_GRAYTEXT + 1);
	wndclass.lpszClassName = "Unvisible Wnd Class";
	if (!RegisterClassEx(&wndclass))
		return 0;
	HWND hwnd = CreateWindowEx(0, wndclass.lpszClassName, "", WS_OVERLAPPEDWINDOW,
		100, 100, 640, 480, HWND_DESKTOP, NULL, hInstance, NULL);
	ShowWindow(hwnd, SW_SHOW);
	
	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0)) {
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}