@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: The WaitForSingleObject API !!!!C# Signature: [DllImport("kernel32.dll", SetLastError=true)] static extern UInt32 WaitForSingleObject(IntPtr hHandle, UInt32 dwMilliseconds); !!!!VB.NET Signature: <DllImport("kernel32", SetLastError := True)> _ Function WaitForSingleObject( _ ByVal handle As IntPtr, _ ByVal milliseconds As UInt32) As UInt32 End Function !!!!Boo Signature: [DllImport("kernel32.dll")] def WaitForSingleObject(hHandle as int, dwMilliseconds as long): pass !!!!User-Defined Types: None. !!!!Notes: None. !!!!Tips & Tricks: C# const UInt32 INFINITE = 0xFFFFFFFF; const UInt32 WAIT_ABANDONED = 0x00000080; const UInt32 WAIT_OBJECT_0 = 0x00000000; const UInt32 WAIT_TIMEOUT = 0x00000102; and use: WaitForSingleObject(handle, (int)INFINITE); VB.NET Const INFINITE As UInt32 = &HFFFFFFFFUI Const WAIT_ABANDONED As UInt32 = &H80UI Const WAIT_OBJECT_0 As UInt32 = &H0UI Const WAIT_TIMEOUT As UInt32 = &H102UI and use: WaitForSingleObject(handle, INFINITE) !!!!Sample Code: private void Run() { while (bRunning) { try { if(WaitForSingleObject(ReceivedEvent,INFINITE) == WAIT_OBJECT_0) { // Signaled DoSomething(); } } catch(Exception Ex) { // An exception occurred // trhow(Ex); } } } ----------------------------------------------- UInt32 waitFor; waitFor = WaitForSingleObject(hMutex, 10000); if (waitFor == WAIT_TIMEOUT) throw new .... else if (waitFor == WAIT_ABANDONED) { ReleaseMutex(waitFor); throw new .... } if (waitFor != WAIT_OBJECT_0) { throw new Win32Exception("Synchronization Mutex Error."); } return 0; !!!!Alternative Managed API: If you have a System.Diagnostic.Process object (possibly created by Process.Start), call Process.WaitForExit(). If you're waiting on a file system object, look at System.IO.FileSystemWatcher System.Threading.WaitHandle and derivatives (e.g. AutoResetEvent) System.Threading.Timeout.Infinite Documentation: WaitForSingleObject@msdn on MSDN
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