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Thread: Delegate paint event bug?

  1. #1

    Default Delegate paint event bug?

    hi,

    I make my model view and delegate, I find that every time my mouse enter in/out the view,all items delegate's paint event are called. this is very time consume, because these items are not need to be repaint as i only move my mouse in and out to the view. Is it a bug? Or how to disable these event?

    thanks !

  2. #2
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    Default Re: Delegate paint event bug?

    Did you enable mouse tracking or did something else non-standard (like asking the widget to accept hover events) on the view or its viewport?
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  3. #3

    Default Re: Delegate paint event bug?

    No, i have not set mouse tracking, and I can't receive the mouse Move event in MyListView when no button is pressed.

    these code in MyListView constructor:
    Qt Code:
    1. FileClipModel *model = new FileClipModel;
    2. FileClipDelegate *delegate = new FileClipDelegate;
    3. setModel(model);
    4. setItemDelegate(delegate);
    To copy to clipboard, switch view to plain text mode 

    this is delegate paint. It is called when mouse enter in/out whitout button pressed. Every time the mouse enter in/out MyListView , all item color changed!
    Qt Code:
    1. void FileClipDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index)const
    2. {
    3. painter->fillRect(option.rect,QColor(double(qrand())/RAND_MAX*255,double(qrand())/RAND_MAX*255,double(qrand())/RAND_MAX*255));
    4. }
    To copy to clipboard, switch view to plain text mode 

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