MFC程序退出提示

1.在CMainFrame添加ON_WM_SYSCOMMAND()

2.在CMainFrame.h定义OnSysCommand (UINT nID, LPARAM lParam) 函数

3.在CMainFrame中实现

void CMainFrame::OnSysCommand(UINT nID, LPARAM lParam)
{
	if((nID & 0xFFFFFFF0) == SC_CLOSE) 
	{
		int nRet = MessageBox( "是否退出", "退出程序", MB_YESNO );
		if( nRet == IDYES )
		{
			PostQuitMessage( 0 );
		}else
		{
		}
	}
}