[Development] Qt Keyboard Shortcuts broken in Qt 5.6 (since 4.8 at least). Reproducible test case included.

[Ziller Eike]

> On Apr 10, 2016, at 7:22 AM, jasonsu at mail-central.com wrote:
> 
> Use of Qt Keyboard shortcuts has been broken in Qt for years.
> 
> There are lots of bugs about it in Qt and KDE projects.
> 
> This one looks close to what I'm seeing,
> 
> 	Can't assign keyboard shortcut with Meta modifiers
> 	https://bugreports.qt.io/browse/QTCREATORBUG-9846

This bug report is more about that you could not assign such a shortcut in Qt Creator to begin with.
That is a different problematic though. To check if Qt (Creator) in principle is able to handle a certain shortcut,
you should open Tools > Options > Environment > Keyboard in Qt Creator and assign a shortcut there
(e.g. by typing the Qt key sequence into the line edit for the shortcut “Ctrl+Meta+Alt+L”).

Br, Eike

> This one got mentioned in a few KDE bugs
> 
> 	Qt LineEdit incorrectly truncates "Password" dialog elements when entered with a KDE Custom Shortcut ...
> 	https://bugreports.qt.io/browse/QTBUG-24304
> 
> There are lots of others.
> 
> Anyway, the point is -- shortcuts don't work.
> 
> I have a reproducible test case. It's 100% reproducible on 4 machines.  Here anyway.
> 
> The Qt shortcuts fail only when used in Qt-based applications.
> They work fine in NON-Qt apps (GTK, JAVE, etc).
> 
> I can't create a Qt account, can't add to any bug (not that I'm clear on which one).  Posting the testcase here.
> 
> I'm cc'ing to a couple of developer's named I saw in those bugs.  Maybe somebody will stick this in the right place.
> 
> -------------------------------------
> on:
> 	/usr/bin/systemsettings5 -v
> 		systemsettings 5.6.2
> 
> exec:
> 	/usr/bin/systemsettings5
> 
> open:
> 	Configure Desktop
> 		Workspace
> 			Shortcuts
> 				Custom Shortcuts
> 					Configure Input Actions settings
> 
> in:
> 	'Name' pane
> 
> right-click:
> 	New
> 		Global Shortcut
> 			Send Keyboard Input
> 
> rename New action:
> 	TEST
> 
> select:
> 	TEST
> 
> in:
> 	'Trigger' Pane
> 
> click:
> 	Shortcut "None"
> 
> enter:
> 	Meta-Ctrl-Alt-L
> 
> click:
> 	Apply
> 
> in:
> 	'Action' Pane
> 
> enter:
> 	Shift+3:X
> 
> click:
> 	Apply
> 
> (1)
> open:
> 	LibreOffice Writer v5.1.2.2.0 10m0(Build:2) document
> 
> press:
> 	Meta-Ctrl-Alt-L
> 	OUTPUT: "#X"
> 
> (2)
> open:
> 	Eclipse Editor v4.6 (Build:I20160405-0800) document
> 
> press:
> 	Meta-Ctrl-Alt-L
> 	OUTPUT: "#X"
> 
> (3)
> open:
> 	KDE Kate v15.12.3 document
> 
> press:
> 	Meta-Ctrl-Alt-L
> 	OUTPUT: (none); window flashes
> 
> (4)
> open:
> 	QtCreator v3.6.0 (based on Qt 5.6.0) document
> 
> press:
> 	Meta-Ctrl-Alt-L
> 	OUTPUT: (none); window flashes
> -------------------------------------
> 
> If someone knows a bug report that this'll get fixed at, pls post it there, and let us know here.
> 
> Jason

-- 
Eike Ziller, Principle Software Engineer - The Qt Company GmbH
 
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