In ExtendedSelection mode, a Ctrl+Press might be both the start of
a selection toggle, or the start of a Ctrl+Drag operation.
If we already toggle on the press, then it's impossible to drag the
existing selection while the Control key is pressed. Ignore Ctrl+Press
events and let the corresponding release event toggle the selection.
Adjust the relevant test cases accordingly. The QItemDelegate test
case used a click+control event incorrectly, such an event doesn't
change the clicked state and should not be eaten, and now it does
change the selection, so fix the test.
Task-number: QTBUG-59888
Change-Id: Ia76126e31c28bc97d3e93e54965bdb1d0b8ac6a4
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
dc5e8aa81c