it's better to use named mutexes (supported on all Windows versions) to find out if there's another instance of the app running.
do the following on application start: - create a named mutex (constant name) - try to lock the mutex (0 time waiting), if failed then there's another instance already running. Thanks, Dmitry _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
