Singleton using mutex for windows application (exe)

[hariakuthota]

Hi, in my application I have to support single instance functionality I tried with FindWindow and sendmessage but it failed in some times so I want to try with mutex,can anybody suggest me how to support single instance with mutex? Thanks in advance....

[ramana g]

you can add some code like this... in your application initinstance HANDLE hMutex = CreateMutex( NULL, TRUE, "MyMutex" ); if( GetLastError() == ERROR_ALREADY_EXISTS ) {//application is already running. dont proceed further CloseHandle( hMutex ); return FALSE; }

[KarstenK]

since w2k sp4 it is better to use global mutexes: HANDLE hMutex = CreateMutex( NULL, TRUE, "Global\\MyMutex" ); to aovid conflicts in multiple sessions.

Greetings from Germany

[santhoshv84]

Hi, Try this Link[^]

The price of anything is the amount of life you exchange for it. Thanks and Regards. SANTHOSH V

[KarstenK]

dont mix C# and C !!! I mean this stuff: http://msdn.microsoft.com/en-us/library/ms682411(VS.85).aspx[^]

Greetings from Germany

[Ali Tavakol]

See the link below. There is a video and source code from microsoft, to show how to restrict to a single instance. also switch to active instance when running a new instance. http://msdn.microsoft.com/en-us/visualc/bb924354.aspx[^]