Thanks aldo I will use DO event
but in case there is a better solution do keep me posted Here is what Im trying to do I am trying to write a win32 gui perl client which when started will check whether the computer is connected to internet continuously indefinety in the meantime other actions should proceed also So based on your previous example actually there wont be a STOP button at all since this loop is going to be continuouly executed as along as the win32 gui script is running now the catch is during the time the loop is running I need to catch key presses , button presses , tab presses etc too and do it efficiently Thanks chris ----- Original Message ----- From: Aldo Calpini <[EMAIL PROTECTED]> To: christopher sagayam <perl-win32-gui-users@lists.sourceforge.net> Sent: Wednesday, February 14, 2001 3:47 PM Subject: Re: [perl-win32-gui-users] looping in win32 GUI christopher sagayam wrote: > $|=1; > use Win32::RASE; > eval "use Time::HiRes qw(sleep)"; > $hrasconn = (RasEnumConnections())[1]; > $old_status = -1; > while ( ($status, $status_text) = RasGetConnectStatus($hrasconn) ) { > if ($status != $old_status) { > print "$status: $status_text\n"; > $old_status = $status; > } > sleep ($@ ? 1 : 0.01); > } > # error 6 - Invalid handle > ($err = Win32::RASE::GetLastError) != 6 and die > Win32::RASE::FormatMessage($err); > exit; > > The above code goes into a while loop and constantly checks for > the internet connection and prints connected or disconnected as > appropriate > > Now my question is how do I use this loop in Win32 GUI well, it depends on the design of your application. basically, the Right Way is to use DoEvents. DoEvents is similar to Dialog, in the sense that it looks for keypresses, mouse clicks, etc. and fires the appropriate event(s). the big difference is that DoEvents does not loop, like Dialog, until it receives a termination message. instead, if there's nothing to process, DoEvents returns immediately. you can call DoEvents inside the loop like this: while ( ($status, $status_text) = RasGetConnectStatus($hrasconn) ) { if ($status != $old_status) { print "$status: $status_text\n"; $old_status = $status; } sleep ($@ ? 1 : 0.01); $MainWindow->DoEvents(); } this way your application can have a 'Stop' button that may, for example, break the loop (not *immediately* responsive, but better than nothing :-). the loop could be embedded in an event sub (for example, StartCheck_Click), or you can have no Win32::GUI::Dialog at all, so that the above loop is the real 'core' of the script. as I said, it depends on the design of your application. if this is not clear, please elaborate a bit more about the program you're trying to write. cheers, Aldo __END__ $_=q,just perl,,s, , another ,,s,$, hacker,,print; _______________________________________________ Perl-Win32-GUI-Users mailing list Perl-Win32-GUI-Users@lists.sourceforge.net http://lists.sourceforge.net/lists/listinfo/perl-win32-gui-users