Dselect QListWidget item

[QTNewb]

hi

im for some reason using qt 5.12 in c++ environment.

i want to perform deselection:

ui->myList->setCurrentItem(nullptr);
ui->myList->clearSelection();

works perfect when i connect it to a button; but i cant do this via mouse click event

i have a QListWidget and despite searching, i have these problems:

1. i want to trigger deselect when i click empty space within the QListWidget and when clicking outside of QListWidget
2. when QListWidget is filled, an item is auto selected, how can i avoid this?
3. how can i appen empty space at the end of QListWidget?

[Axel Spoerl]

Ad 1:
To recognise a mouse press in an empty area, install an event filter and handle QEvent::MouseButtonPress. Pass the mouse event's point to itemAt() and clear the selection, if it returns nullptr.
You can do the same with QEvent::FocusOut, to handle a click outside the list view. Mind that this may not work, in case the list widget is a focus proxy (it isn't by default).

Ad 2:
The list view is populated programmatically. Just call clearSelection() when this has been done.

Ad 3:
Read the height after the list widget has been populated. Add the desired height margin and use QWidget::setMinimumHeight().

[QTNewb]

@Axel-Spoerl

1. whatever i did, i couldn't implement QEvent::MouseButtonPress and read empty space in event filter of a QListWidget; resorting to QListView however solved my problem.

2. what i really needed was setCurrentItem(nullptr)

3. setMinimumHeight (at least for QListView ) changes the pane's proportions; i want to add empty area within the pane so the extra space is added for scrolling.