Bug 472501

Summary:	QListview processes 's' and 'c' characters by selecting the next item.
Product:	[Frameworks and Libraries] frameworks-kwindowsystem	Reporter:	hong <hong7son>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	nicolas.fella
Priority:	NOR
Version First Reported In:	5.104.0
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description hong 2023-07-22 14:33:43 UTC

SUMMARY
I have a C++ program that uses KWindowSystem and its QListview.
I call setCurrentIndex to jump to specific items when searching.
This works in most cases by setting the item as current and selected.
But sometimes, it selects and highlights the wrong item, specifically
one past the expected item; e.g., index 73 instead of 72.

STEPS TO REPRODUCE
1. in my app, it can be repeated.
2. but i have not determined the pattern.
3. i have reduced the total number of items to just 4, and it misbehaves still.

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 5.27.4
(available in About System)
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION

Comment 1 hong 2023-07-23 09:45:29 UTC

My mistake. My bug! Sorry about that.

Comment 2 hong 2023-07-23 10:45:46 UTC

Described problem in SUMMARY was due to my eventFilter returning False instead of True
when 's' was processed. QListview then moved to the next item; I was expecting item 72 but 73 was selected by QListview. This led me to believe .setCurrentIndex() was not working properly.

So, of course, when I return true in eventFilter, my program worked as expected.
My question is:
is this processing of 's' (actually also 'c') by QListview documented?
It seems like a bug to me.

Comment 3 Nicolas Fella 2023-07-23 13:32:51 UTC

What does this have to do with KWindowSystem?

KWindowSystem is a library for doing various X11/Wayland specific things, it has nothing to do with QListView and your problem.

If you think there is a bug in Qt then use https://bugreports.qt.io/ or ask in their forum