程序单次运行

1.在应用程序中添加成员变量
HANDLE m_hMutex;

2.重载CWinApp::InitInstance()
{
m_hMutex=OpenMutex(MUTEX_ALL_ACCESS,FALSE,"SingleInstance");
if (m_hMutex==NULL)
m_hMutex=CreateMutex(NULL,TRUE,"SingleInstance");
else
   {
   //加入你的处理代码
   return FALSE;
   }
}

3.重载CWinApp::ExitInstance()
{
if (m_hMutex!=NULL) ReleaseMutex(m_hMutex);
}