Item stuck in mouseover state when the mouse leaves a QListView

[plover]

Hi I posted this question on stackoverflow with no response so I'm going to try here.

When the mouse cursors leaves a QListview, the last item that the mouse was over is sometimes still stuck in mouse over state. This usually happens if I move the mouse to the parent widget or another QListview that is above it.

My QListView has a QStyledItemDelegate that draws the item and I check the mouse over state in the paint method in the following way :

void MyDelegate::paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const
{
    if( option.state & QStyle::State_MouseOver)
     {
        // Paint in MouseOver state
     }
     else
     {
        // Paint normally
     }
 }

Then I implemented the leaveEvent in my QListView to call update so the view is updated when the mouse leave the view.

void MyListView::leaveEvent(QEvent *event)
{
   update();
   QListView::leaveEvent(event);
}

This does call the paint method of the delegate on leave but doesn't change the hover state of the item last hovered over in the QListView.

Is there a way to force the delegate to repaint and the last item not be in mouse over state when the cursor leaves the listview ?

[JonB]

@plover
Is it worth a try to see whether it works right if in your override you call the base leaveEvent() before the update()`?

[plover]

I've already tried that. I've also tried to delay the update() by using a QTimer but the results are the same.

[SGaist]

Hi,

You should also tell:

• Which version of Qt
• Which OS

[plover]

@SGaist
I'm currently using Qt 5.6, and I've tested this on centos 7, fedora 27 and 28.

[plover]

I updated the QT version to 5.11 and the problem goes away. No need to implement the leaveEvent of the QListView.
Tested also with 5.10 and it worked there as well.