in reply to Win32::GUI window freezing, even with threading.

What do you think happens here if there is no data in the queue? 

#wait for data, print data to GUI textbox
while(Win32::GUI::DoEvents() != -1) {
    my $tmptxt = $DataQueue->dequeue();
    $main_text_window->Append($tmptxt);
}

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Re^2: Win32::GUI window freezing, even with threading.
by chute (Initiate) on May 28, 2013 at 13:20 UTC
    I took that from http://perl-win32-gui.sourceforge.net/cgi-bin/docs.cgi?doc=reference-methods#dialog

    I think that will execute my code block as long as the GUI isn't doing something.

    I could be wrong though.
[reply]
      I took that from http://perl-win32-gui.sourceforge.net/cgi-bin/docs.cgi?doc=reference-methods#dialog

      There is no mention of "dequeue" anywhere on that page.

      The problem is not the bit you did take from that page; it is the bit you added: 

      #wait for data, print data to GUI textbox
while(Win32::GUI::DoEvents() != -1) {
    my $tmptxt = $DataQueue->dequeue();
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    $main_text_window->Append($tmptxt);
}

      [download]

      If the queue is empty, the call to dequeue() will block and your GUI will freeze.

      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]
[d/l]

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