WINCE中只允许程序运行一个实例

//.NET CF:   
  
[DllImport("coredll.Dll")]    
private static extern int GetLastError();    
  
[DllImport("coredll.Dll")]    
private static extern int ReleaseMutex(IntPtr hMutex);    
  
[DllImport("coredll.Dll")]    
private static extern IntPtr CreateMutex(SECURITY_ATTRIBUTES lpMutexAttributes,bool bInitialOwner,string lpName);    
  
[StructLayout( LayoutKind.Sequential)]    
public class SECURITY_ATTRIBUTES    
{    
　 public int nLength;    
　 public int lpSecurityDescriptor;    
　 public int bInheritHandle;    
}    
const int ERROR_ALREADY_EXISTS = 0183;    
  
static void Main()    
{     
    #region Api_Call CreateMutex;    
    IntPtr hMutex;    
　   hMutex=CreateMutex(null,false,"程序名");    
　   if (GetLastError()!=ERROR_ALREADY_EXISTS)    
　   {    
　       Application.Run(new Frmmenu());    
　   }    
　   else    
　   {    
　       MessageBox.Show("本程序只允许同时运行一个");    
　       ReleaseMutex(hMutex);    
    }   
    #endregion    
}   
  
    EVC:       
    HANDLE   hMutex=::CreateMutex(NULL,TRUE,L"LiCR");     
    if(hMutex!=NULL)      
    {      
        if(GetLastError()==ERROR_ALREADY_EXISTS)      
        {                
            AfxMessageBox( "已经有一个程序运行." );                   
            ReleaseMutex(hMutex);               
            return  FALSE;              
        }          
  
    }   
  
  
//本文转自：http://blog.csdn.net/jimmy54/archive/2010/01/21/5221508.aspx