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Thread: Counting the QListWidget Items by a QLineEdit each Drag&Drop event.

  1. #1
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    Default Counting the QListWidget Items by a QLineEdit each Drag&Drop event.

    Hello Qt devs, I'm pretty new to qt and I would like to ask for a simple problem:
    _ I have a MainWindow with:
    + An initial widget for storing initial items.
    + 10 list widgets for storing dropped items.
    + A line edit inside a for showing a "count" variable which count how many items in there.
    What I want to do is after dropping a item in these 10 widgets, the "count" number plus one, and dragging an item outside the list widgets the "count" minus one. I tried eventFilter but after installingEventFilter to a widget, the dropped item dissappears. I have stuck at this for many hours so hopefully someone could give me a solution.
    Last edited by comvis; 11th May 2019 at 18:03.

  2. #2
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    Default Re: Counting the QListWidget Items by a QLineEdit each Drag&Drop event.

    You don't need any event filter for that.

    Each list widget has a model for its data and each model has signals for when it adds or removes items.

    Simply connect to these and update the count.

    Cheers,
    _

  3. The following user says thank you to anda_skoa for this useful post:

    comvis (12th May 2019)

  4. #3
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    Default Re: Counting the QListWidget Items by a QLineEdit each Drag&Drop event.

    Can you tell me what is this Signal, is this viewportEntered or Entered. Thanks for your reply.

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    Default Re: Counting the QListWidget Items by a QLineEdit each Drag&Drop event.


  6. The following user says thank you to anda_skoa for this useful post:

    comvis (12th May 2019)

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