Code:it compiles fine , it just dosent get displayed does anyone know why? #include <windows.h> //Function prototypes... LRESULT WINAPI WndProc(HWND Hwnd, UINT msg, WPARAM wParam , LPARAM lParam); void RegisterWindowClass(HINSTANCE hInstance); void CreateAppWindow(HINSTANCE hINstance); WPARAM StartMessageLoop(); //Global HWND g_hWnd; INT WINAPI WinMain(HINSTANCE hInstance , HINSTANCE , LPSTR , INT) { RegisterWindowClass(hInstance); CreateAppWindow(hInstance); ShowWindow(g_hWnd, SW_MAXIMIZE); UpdateWindow(g_hWnd); INT result = StartMessageLoop(); return result; } //WndProc LRESULT WINAPI WndProc(HWND hWnd, UINT msg , WPARAM wParam , LPARAM lParam) { switch(msg) { case WM_CREATE: return 0; case WM_DESTROY: PostQuitMessage(0); return 0; case WM_PAINT: ValidateRect(g_hWnd , NULL); return 0; } return DefWindowProc(g_hWnd , msg , wParam , lParam); } void RegisterWindowClass(HINSTANCE hInstance) { WNDCLASSEX wc; wc.cbSize = sizeof(WNDCLASSEX); wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; wc.lpfnWndProc = WndProc; wc.cbClsExtra = 0; wc.cbWndExtra =0; wc.hInstance = hInstance; wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = (HCURSOR)LoadCursor(NULL , IDC_ARROW); wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); wc.lpszMenuName = NULL; wc.lpszClassName = "WinApp"; wc.hIconSm = NULL; RegisterClassEx(&wc); } void CreateAppWindow(HINSTANCE hInstance) { g_hWnd = CreateWindowEx( NULL, "WinApp", "Basic Windows Application", WS_OVERLAPPEDWINDOW, 100, 100, 648, 514, GetDesktopWindow(), NULL, hInstance, NULL); } WPARAM StartMessageLoop() { MSG msg; while(1) { if(PeekMessage(&msg , NULL , 0 , 0 , PM_REMOVE)) { if(msg.message == WM_QUIT) break; TranslateMessage(&msg); DispatchMessage(&msg); } else { //use for idle } } return msg.wParam; }