C / C++ / MFC

//Standard wondows include<br />
#include <windows.h><br />
<br />
//Message Loop CallBack Function Prototype<br />
LRESULT CALLBACK fnMessageProcessor (HWND, UINT, WPARAM, LPARAM);<br />
<br />
//Function called automatically when the program starts<br />
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine,<br />
					int iCmdShow)<br />
<br />
{<br />
	HWND hWnd;<br />
	MSG  msg;<br />
	WNDCLASSEX wndclass;<br />
<br />
	//Set up window class<br />
	wndclass.cbSize    =sizeof(WNDCLASSEX);<br />
	wndclass.style     =CS_HREDRAW | CS_VREDRAW;<br />
	wndclass.lpfnWndProc =fnMessageProcessor;<br />
	wndclass.cbClsExtra =0;<br />
	wndclass.cbWndExtra =0;<br />
	wndclass.hInstance  =hInstance;<br />
	wndclass.hIcon      =LoadIcon(NULL, IDI_APPLICATION);<br />
	wndclass.hCursor    =LoadCursor(NULL, IDC_ARROW);<br />
	wndclass.hbrBackground=(HBRUSH) GetStockObject (GRAY_BRUSH);<br />
	wndclass.lpszMenuName=NULL;<br />
	wndclass.lpszClassName="Window Class";<br />
<br />
	//Class Name<br />
	wndclass.hIconSm     =LoadIcon(NULL,IDI_APPLICATION);<br />
<br />
	//Register the window class<br />
	if(RegisterClassEx(&wndclass)==0)<br />
	{<br />
		//the program failed, exit<br />
		exit(1);<br />
	}<br />
<br />
	//Create the window<br />
	hWnd=CreateWindowEx(<br />
		WS_EX_OVERLAPPEDWINDOW,<br />
		"Window Class",  //Class Name<br />
		"Create Window Example", //Title bar text<br />
		WS_OVERLAPPEDWINDOW,<br />
		0,<br />
		0,<br />
		400,<br />
		600,<br />
		NULL,<br />
		NULL,<br />
		hInstance,<br />
		NULL);<br />
<br />
	//Display Window<br />
	ShowWindow(hWnd, iCmdShow);<br />
<br />
	//Process Messages until program is terminated<br />
	while(GetMessage (&msg,NULL,0,0));<br />
	{<br />
		TranslateMessage(&msg);<br />
		DispatchMessage(&msg);<br />
	}<br />
<br />
	return (msg.wParam);<br />
<br />
}<br />
<br />
//Message loop callBack function (Required for all windows programs)<br />
LRESULT CALLBACK fnMessageProcessor(HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam)<br />
{<br />
	switch(iMsg)<br />
	{<br />
		//Called when window is first created<br />
	case WM_CREATE:<br />
		return(0);<br />
		//Called when window is refreshed<br />
	case WM_PAINT:<br />
		return(0);<br />
		//Called when the user closes the window<br />
	case WM_DESTROY:<br />
		PostQuitMessage(0);<br />
		return(0);<br />
	default:<br />
		return DefWindowProc(hWnd, iMsg, wParam, lParam);<br />
	}<br />
}<br />