// 1. Windows Procedure - a procedure attached to every window created// 2. A pump mechanism - used to process windows messages// 3. The procedure which initializes the window and runs the pump// #1 - generic Windows ProcedureLRESULT CALLBACK WndProc(	HWND	hWnd,			// Handle For This Window				UINT	uMsg,			// Message For This Window				WPARAM	wParam,			// Additional Message Information				LPARAM	lParam)			// Additional Message Information{	switch (uMsg)									// Check For Windows Messages	{		case WM_ACTIVATE:							// Watch For Window Activate Message		{			if (!HIWORD(wParam))					// Check Minimization State			{				//active=TRUE;						// Program Is Active			}			else			{				//active=FALSE;						// Program Is No Longer Active			}			return 0;								// Return To The Message Loop		}		case WM_SYSCOMMAND:							// Intercept System Commands		{			switch (wParam)							// Check System Calls			{				case SC_SCREENSAVE:					// Screensaver Trying To Start?				case SC_MONITORPOWER:				// Monitor Trying To Enter Powersave?				return 0;							// Prevent From Happening			}			break;									// Exit		}		case WM_CLOSE:								// KILL ZA WINDOW BIZATCHI			PostQuitMessage(0);	}	// Pass All Unhandled Messages To DefWindowProc	return DefWindowProc(hWnd,uMsg,wParam,lParam);};// # 2 - pump procedure (generic, only inquiring to see if WM_QUIT is one of the messagesbool window::pump(){	PeekMessage(&threadMessage,NULL,0,0,PM_REMOVE);	TranslateMessage(&threadMessage); // Translate The Message//****************************************************************//////	a custom switch case message handler can be used here to take //  care of the fact in which the WINDPROC is EXTERNAL and with out//  class context////****************************************************************//	if (threadMessage.message == WM_QUIT) return false;	DispatchMessage(&threadMessage);	return true;};// # 3 - The code implimenting the Pump, and assigning it to a windowmain(){...	WindowRect.bottom=(long)display.dmPelsHeight;	// Set Bottom Value To Requested Height		windowClass.style			= CS_HREDRAW | CS_VREDRAW | CS_OWNDC;	// Redraw On Size, And Own DC For Window.	windowClass.lpfnWndProc	= (WNDPROC) WndProc;					// WndProc Handles Messages	windowClass.cbClsExtra		= 0;									// No Extra Window Data...        RegisterClass(&windowClass);									// Attempt To Register The Window Class		AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);		// Adjust Window To True Requested Size			windowHandle=CreateWindowEx(	dwExStyle,					"OSL",					"undefined",					WS_CLIPSIBLINGS | WS_CLIPCHILDREN | dwStyle,					WindowRect.left, 					WindowRect.top,					WindowRect.right,			    	        WindowRect.bottom,					NULL,					NULL,					GetModuleHandle(NULL),					NULL);		...   while (pump())   {       gamecode();   }};