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bool createdNew;
Mutex mutex = new Mutex(true, Application.ProductName, out createdNew);
if (!createdNew)
{
Process instance = RunningInstance();
if (instance != null)
{
Win32NoSafeMethods.HandleRunningInstance(instance);
}
return;
}
bool createdNew;
Mutex mutex = new Mutex(true, Application.ProductName, out createdNew);
if (!createdNew)
{
...
return;
}
Application.Run( ... );
mutex.Close(); //<--加这一句