#include "windows.h"


LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);


char szClassName[ ] = "WindowsApp";


int WINAPI WinMain (HINSTANCE hThisInstance,
						 HINSTANCE hPrevInstance,
						 LPSTR lpszArgument,
						 int nFunsterStil)
{
	 HWND hwnd;
	 MSG messages;
	 WNDCLASSEX wincl;

	
	wincl.hInstance = hThisInstance;
	wincl.lpszClassName = szClassName;
	wincl.lpfnWndProc = WindowProcedure;
	 wincl.style = CS_DBLCLKS;
	 wincl.cbSize = sizeof (WNDCLASSEX);

	
	 wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
	wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
	wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
	wincl.lpszMenuName = NULL;
	wincl.cbClsExtra = 0;
	wincl.cbWndExtra = 0;
	
	wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

	
	 if (!RegisterClassEx (&wincl))
		 return 0;

	
	 hwnd = CreateWindowEx (
						 0,
						 szClassName,
						 "Windows App",
						 WS_OVERLAPPEDWINDOW,
						 CW_USEDEFAULT,
						 CW_USEDEFAULT,
						 544,
						 375,
						 HWND_DESKTOP,
						 NULL,
						 hThisInstance,
						 NULL
						 );

	
	 //ShowWindow (hwnd, nFunsterStil);

	
	 while (GetMessage (&messages, NULL, 0, 0))
	 {
	
		 TranslateMessage(&messages);
		 
		 DispatchMessage(&messages);
	 }

	
	 return messages.wParam;
}



LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
 int mymessage;
	 switch (message)
	 {
		 case WM_DESTROY:
			  PostQuitMessage (0);
			  break;
		 case WM_QUERYENDSESSION:
			  
	mymessage=::MessageBox(NULL,"操作完成","现在可以点击取消",MB_OK);
	if (mymessage==IDYES)
					return 1;
	else
	 return 0;
		 case WM_ENDSESSION:
			  
			  return 0;
		 default:
			  return DefWindowProc (hwnd, message, wParam, lParam);
	 }

	 return 0;
}