[Interest] Pressing key (A-Z) behaves differently the pressing modifiers..

[Mark Gaiser]

Hi George,

Thank you very much for clearing that up.
I'm now using "isAutoRepeat" in the mix which solves my issue.

Cheers,
Mark

On Wed, Jan 1, 2014 at 6:11 PM, George Tasopoulos
<tasopoulos.yorghos at gmail.com> wrote:
> This is intended, and it's because when typing you'd expect keeping a letter
> key pressed to keep producing that letter (I'm not sure about Function keys
> though). Modifier keys don't have that functionality because you normally
> press them combined with another key and so you need them to "stay" pressed.
>
> Look at this function:
> http://qt-project.org/doc/qt-5/qkeyevent.html#isAutoRepeat
> For non-modifier keys and not key combinations, it should return true when
> an event comes from that behaviour and so you can use it to screen for it
> and ignore extra events.
>
> --
> Yours sincerely,
> George Tasopoulos
>
>
> On 1 January 2014 16:15, Mark Gaiser <markg85 at gmail.com> wrote:
>>
>> Hi,
>>
>> I guess this will end up being a bug report, but i don't really if the
>> results i see is a bug or intended behavior. Thus asking on the list
>> to make sure before i make a bug report.
>>
>> I'm playing with a custom event filter and am observing some weird
>> behavior with key presses.
>>
>> If i press and hold a normal key (a-z, F1 - F12, .. non modifier keys)
>> then Qt's event filter acts like i'm rapidly pressing and releasing
>> it. For example lets take the "A" key in a normal press/release
>> situation.
>>
>> Press A:
>> Event 6 (KeyPress) emits
>> -- some other events
>> Event 7 (KeyRelease) emits
>>
>> That's fine, as one would expect.
>>
>> Now if i keep it pressed i see:
>> Event 6 (KeyPress) emits
>> -- some other events
>> Event 7 (KeyRelease) emits
>> Event 6 (KeyPress) emits
>> -- some other events
>> Event 7 (KeyRelease) emits
>> Event 6 (KeyPress) emits
>> -- some other events
>> Event 7 (KeyRelease) emits
>> ... and so on.
>>
>> If i do the same with the CTRL key (press and hold it) then i don't
>> get that and just get:
>> Event 6 (KeyPress) emits
>> -- some other events
>> Event 7 (KeyRelease) emits
>>
>> What i see with the CTRL key is what i would expect, but why is the
>> behavior different for other keys? Is this a bug or is this intended
>> behavior and should i mimic "press and hold" by adding in a timer?
>>
>> Cheers,
>> Mark
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>