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how to limit

 
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DebugMe
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Joined: 29 May 2007
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PostPosted: Thu Jun 07, 2007 3:02 pm    Post subject: how to limit Reply with quote
how do i limit the number of the same program being run? Like ventrillo you can't run more then 1.

thnx
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Noz3001
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PostPosted: Thu Jun 07, 2007 3:03 pm    Post subject: Reply with quote
Code:
if(FindWindow("YourWindowClass", "WindowName"))
 return 0;


Lol, theres load of ways. this is the easiest
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UnLmtD
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PostPosted: Thu Jun 07, 2007 3:05 pm    Post subject: Reply with quote
Well there's many ways of doing it. I prefer using Mutex method.

Here's an exemple
Code:
hMutex = CreateMutex(
                  NULL,                     
                  FALSE,                     
                  "{FA531CC1-0497-11d3-A180-00105A276C3E}");

          
           if( GetLastError() == ERROR_ALREADY_EXISTS )
              {
       
                        MessageBox (hWndDlg, "Another copy is already running!", "Error", MB_OK);
                        EndDialog(hWndDlg, 0);
                   return 0;                  
              }


And before closing the application close the handle CloseHandle(hMutex);
There's more way of doing it, --> http://www.codeproject.com/cpp/limitnumins.asp
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