[Development] Sending key events on Qt 5.5.0

[Bo Thorsen]

That's completely besides the point I was making. I'm saying you 
shouldn't abuse the shortcuts as a message system (which is exactly what 
you do). If you want to send events, find another way.

Bo.

Den 17-09-2015 kl. 12:16 skrev Christian.Paffhausen at ehrhardt-partner.com:
>
> Hi Bo Thorsen,
>
> thanks for that. But it's a little bit more complicated. There is no
> PushButton. We record all keyboard input events, buffer them in a own key
> event class, which is derived by QKeyEvent, and accepting the original
> events. So the original key event will never reach the action. If our
> internal states say ready for keyboard input, we sending our key event via
> QApplication::sendEvent. In this part of the code, i know nothing about a
> action somewhere. I only know about incoming key events and resending them.
>
> The PushButton was only a demonstrator :-)
>
> Regards
> Christian
>
> Mit freundlichen Grüßen / Best regards
>
> Ehrhardt + Partner GmbH & Co. KG
>
> i.A. Christian Paffhausen
> Software Developer
>
> Development Group User Interfaces
>
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>
>
>
>
> From:	Bo Thorsen <bo at vikingsoft.eu>
> To:	development at qt-project.org
> Date:	17.09.2015 11:37
> Subject:	Re: [Development] Sending key events on Qt 5.5.0
> Sent by:	development-bounces
>              +christian.paffhausen=ehrhardt-partner.com at qt-project.org
>
>
>
> Den 17-09-2015 kl. 11:21 skrev Christian.Paffhausen at ehrhardt-partner.com:
>> i have a problem with manually sending key events and shortcuts on Qt
>> 5.5.0.
>>
>> In our application, we have a QAction with a F5 shortcut in a toolbar.
> When
>> i press the toolbutton everything works fine. When i press the F5 key on
> my
>> keyboard too.
>> But when i press a pushbutton, where the connected slot generate a
>> QKeyEvent and send this event via QApplication::sendEvent nothing will
>> happen.
>> With Qt 5.4.1 it works, but with 5.5.0 not.
>>
>> I have attached a small example app, which describes my problem.
>>
>> Is this problem already known? Have you a patch or work around for me?
>
> Hi Christian,
>
> The solution: tAction->trigger()
>
> I'm not trying to be cute or anything. This is what you should do.
> Abusing the short cut system to send messages between widgets is a bad
> idea.
>
> That said, I also think you should report this as a bug. The behaviour
> change between 5.4 and 5.5 is bad. But I've seen 5.5 behaviour change
> bug reports closed as invalid for weird reasons, so you might not have
> any luck.
>
> I hope this helps.
>
> Bo Thorsen,
> Director, Viking Software.
>
> --
> Viking Software
> Qt and C++ developers for hire
> http://www.vikingsoft.eu
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Bo Thorsen,
Director, Viking Software.

-- 
Viking Software
Qt and C++ developers for hire
http://www.vikingsoft.eu