talwyn has asked for the wisdom of the Perl Monks concerning the following question:

When the number of items inserted into the list exeeds its current displayable size my list box disappears...

That is it vanishes and does not redraw itself... I have placed both

within the code inserting information into the listview.

However, that does not appear to make a difference. Is there an option I should make sure is enabled in the Listview when it is built or another method incharge of ensuring that the window is re-drawn?

I have observed the following:

Any help or pointers would be appreciated. I did not include any code since I felt that this was something simple I am overlooking since I am not very familiar with how the Win32-Gui module works yet.

  • Comment on Win32::GUI -- Listview Display Problems

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Re: Win32::GUI -- Listview Display Problems
by Courage (Parson) on Jul 03, 2002 at 09:06 UTC
    Is it a requirement to use Win32::GUI?

    If you really stuck with it, I can see into this later at evening after work, but please give me a smallest working piece of code that show us a problem.

    Now, I just share my experience with similar things

    - first, most obvious, use perlTk.

    - second, use some known GUI framework such as C++builder and call perl functions from within it. I did so earlier and that was not bad: I managed variables to be "tied" directly into GUI screen, and changing of a perl variable changed a windowed control, and vice versa.

    Courage, the Cowardly Dog

[reply]
      Courage:

      Using your header/Footer from the other day I constructed a Win32::Gui to reconstruct the problem.

      I couldn't duplicate the problem. So then I created another Guiloft version to see if the problem resided in that module. Again I couldn't duplicate the problem.

      Next I wrote a wrapper around my original guiloft window, still couldn't reproduce the problem.

      So finally I went through my code and noticed that I had neglected to duplicate the $listview->Update() method to my tests... After I commented out all occurences of $listview->Update()in my program the listview behaves properly.

      I hope dada documents the proper use of Update() in his next Beta cycle ... I was confused especially since I was using finddata.pl as an example of the various things gui does. It makes use of Update() several times.

      Thanks again for your help.

      Talwyn

[reply]
        I faced similar problems several years ago when did such type of programming, and that is why I suggested you to try perl/Tk and may be other GUI/C++ framework and perl embed into it. Beleive me, the deeper you go into Win32::GUI the more problem you will get!

        At least you should not develop *serious* application with this module.
        Otherwise something bad is going to happen! (okay, I'm joking)

        Best wishes,
        Courage, the Cowardly Dog.

[reply]
        Would one of you please post working code, so that others following this thread can see what needed to be done? Thanks.

[reply]

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