C / C++ / MFC

#include <windows.h>

HINSTANCE hInst; // global handle to hold the application instance
HWND wndHandle; // global variable to hold the window handle

// forward declarations
bool initWindow( HINSTANCE hInstance );
LRESULT CALLBACK WndProc( HWND, UINT, WPARAM, LPARAM );

int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow )
{
	// Initialize the window
	if ( !initWindow( hInstance ) )
	{
		return false;
	}
	
	// main message loop:
	MSG msg;
	
	ZeroMemory( &msg, sizeof( msg ) );
	
	while( msg.message!=WM_QUIT )
	{
		// Check the message queue
		while (GetMessage(&msg, wndHandle, 0, 0) )
		{
			TranslateMessage( &msg );
			DispatchMessage( &msg );
		}
	}

	return (int) msg.wParam;
}


bool initWindow( HINSTANCE hInstance )
{
	WNDCLASSEX wcex;
	// Fill in the WNDCLASSEX structure. This describes how the window
	// will look to the system

	wcex.cbSize = sizeof(WNDCLASSEX); // the size of the structure
	wcex.style = CS_HREDRAW | CS_VREDRAW; // the class style
	wcex.lpfnWndProc = (WNDPROC)WndProc; // the window procedure callback
	wcex.cbClsExtra = 0; // extra bytes to allocate for this class
	wcex.cbWndExtra = 0; // extra bytes to allocate for this instance
	wcex.hInstance = hInstance; // handle to the application instance
	wcex.hIcon = 0; // icon to associate with the application
	wcex.hCursor = LoadCursor(NULL, IDC_ARROW);// the default cursor
	wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); // the background color
	wcex.lpszMenuName  = NULL; // the resource name for the menu
	wcex.lpszClassName = "DirectXExample"; // the class name being created
	wcex.hIconSm = 0; // the handle to the small icon
	RegisterClassEx( &wcex );
	// Create the window
	wndHandle = CreateWindow(
		"DirectXExample",
		"DirectXExample",
		WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT, // the starting x coordinate
		CW_USEDEFAULT, // the starting y coordinate
		640, // the pixel width of the window
		480, // the pixel height of the window
		NULL, // the parent window; NULL for desktop
		NULL, // the menu for the application; NULL for
		hInstance, // the handle to the application instance
		NULL); // no values passed to the window
	// Make sure that the window handle that is created is valid
	if (!wndHandle)
	{
		return false;
	}
	
	// Display the window on the screen
	ShowWindow(wndHandle, SW_SHOW);
	
	UpdateWindow(wndHandle);
	
	return true;
}


LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	// Check any available messages from the queue
	switch (message)
	{
		case WM_DESTROY:
			PostQuitMessage(0);
		break;
	}
	
	// Always return the message to the default window
	// procedure for further processing
	return DefWindowProc(hWnd, message, wParam, lParam);
}