Hi Cyril,

* ... create a thread here

DECLARE GetExitCodeThread IN WIN32API LONG hThread, LONG @lpExitCode
lnExitCode = 259
DO WHILE m.lnExitCode = 259
  GetExitCodeThread( m.lnHandle, @lnExitCode )
  * ... do something
ENDDO
CloseHandle( m.lnHandle )

259 is the STILL_RUNNING exit code. If you only wait for the thread to end you could use the WaitForSingleObject() API function.