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Qt-jambi-interest Archive, October 2007
Map QKeyEvent to QKeySequence ?

Message 1 in thread

Hi,

Is there any way to figure out if a QKeyEvent matches a QKeySequence 
constructed from a plain text? Or in other words, is there a way of testing 
if an QKeyEvent matches for instance "Ctrl+F7" ?

-=Børge
Message 2 in thread

Børge Austvold said the following on 17.10.2007 13:06:
> Hi,
> 
> Is there any way to figure out if a QKeyEvent matches a QKeySequence 
> constructed from a plain text? Or in other words, is there a way of testing 
> if an QKeyEvent matches for instance "Ctrl+F7" ?

Have a look at
     http://doc.trolltech.com/4.3/qkeysequence.html#QKeySequence-3
and http://doc.trolltech.com/4.3/qkeysequence.html#matches

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Message 3 in thread

Marius Storm-Olsen wrote:
> Børge Austvold said the following on 17.10.2007 13:06:
>> Hi,
>>
>> Is there any way to figure out if a QKeyEvent matches a QKeySequence 
>> constructed from a plain text? Or in other words, is there a way of 
>> testing if an QKeyEvent matches for instance "Ctrl+F7" ?
> 
> Have a look at
>     http://doc.trolltech.com/4.3/qkeysequence.html#QKeySequence-3
> and http://doc.trolltech.com/4.3/qkeysequence.html#matches
> 

The Qt Jambi docs for this are:

http://doc.trolltech.com/qtjambi-4.3.1_01/com/trolltech/qt/gui/QKeySequence.html
http://doc.trolltech.com/qtjambi-4.3.1_01/com/trolltech/qt/gui/QKeySequence.html#matches(com.trolltech.qt.gui.QKeySequence)

-
Gunnar
Message 4 in thread

Hi,

Does that mean that I can create an QKeySequence like this :

QKeyEvent event ...
QKeySequence s1 = new  QKeySequence(event..modifiers().value(), 
event.key());
QKeySequence s2 = new QKeySequence("Ctrl+F7");

and use it like this

s2.matches(s1)

?

-=Børge



"Gunnar Sletta" <gunnar@xxxxxxxxxxxxx> wrote in message 
news:4715F214.7010603@xxxxxxxxxxxxxxxx
> Marius Storm-Olsen wrote:
>> Børge Austvold said the following on 17.10.2007 13:06:
>>> Hi,
>>>
>>> Is there any way to figure out if a QKeyEvent matches a QKeySequence 
>>> constructed from a plain text? Or in other words, is there a way of 
>>> testing if an QKeyEvent matches for instance "Ctrl+F7" ?
>>
>> Have a look at
>>     http://doc.trolltech.com/4.3/qkeysequence.html#QKeySequence-3
>> and http://doc.trolltech.com/4.3/qkeysequence.html#matches
>>
>
> The Qt Jambi docs for this are:
>
> http://doc.trolltech.com/qtjambi-4.3.1_01/com/trolltech/qt/gui/QKeySequence.html
> http://doc.trolltech.com/qtjambi-4.3.1_01/com/trolltech/qt/gui/QKeySequence.html#matches(com.trolltech.qt.gui.QKeySequence)
>
> -
> Gunnar
Message 5 in thread

Hi Again,

The above code worked if I changed s2 to new QKeySequence("Ctrl+,F7") I 
guess this is probably a bug either in the documentation or the code...

-=Børge

"Børge Austvold" <bna@xxxxxxxxxxx> wrote in message 
news:ff4v05$tf3$1@xxxxxxxxxxxxxxxxxxxxx
> Hi,
>
> Does that mean that I can create an QKeySequence like this :
>
> QKeyEvent event ...
> QKeySequence s1 = new  QKeySequence(event..modifiers().value(), 
> event.key());
> QKeySequence s2 = new QKeySequence("Ctrl+F7");
>
> and use it like this
>
> s2.matches(s1)
>
> ?
>
> -=Børge
>
>
>
> "Gunnar Sletta" <gunnar@xxxxxxxxxxxxx> wrote in message 
> news:4715F214.7010603@xxxxxxxxxxxxxxxx
>> Marius Storm-Olsen wrote:
>>> Børge Austvold said the following on 17.10.2007 13:06:
>>>> Hi,
>>>>
>>>> Is there any way to figure out if a QKeyEvent matches a QKeySequence 
>>>> constructed from a plain text? Or in other words, is there a way of 
>>>> testing if an QKeyEvent matches for instance "Ctrl+F7" ?
>>>
>>> Have a look at
>>>     http://doc.trolltech.com/4.3/qkeysequence.html#QKeySequence-3
>>> and http://doc.trolltech.com/4.3/qkeysequence.html#matches
>>>
>>
>> The Qt Jambi docs for this are:
>>
>> http://doc.trolltech.com/qtjambi-4.3.1_01/com/trolltech/qt/gui/QKeySequence.html
>> http://doc.trolltech.com/qtjambi-4.3.1_01/com/trolltech/qt/gui/QKeySequence.html#matches(com.trolltech.qt.gui.QKeySequence)
>>
>> -
>> Gunnar
>
Message 6 in thread

Børge Austvold said the following on 17.10.2007 14:25:
> Hi,
> 
> Does that mean that I can create an QKeySequence like this :
> 
> QKeyEvent event ...
> QKeySequence s1 = new  QKeySequence(event..modifiers().value(), 
> event.key());
> QKeySequence s2 = new QKeySequence("Ctrl+F7");
> 
> and use it like this
> 
> s2.matches(s1)

More like:
    QKeySequence s1 = new QKeySequence(event.modifiers().value() + event.key());
    QKeySequence s2 = new QKeySequence("Ctrl+F7");
    s1.matches(s2)

Note: The documentation states that
"Returns NoMatch if seq is shorter.", where 'seq' here refers to the parameter of matches().
This means that you always want to have the sequence you're looking for as the parameter, and not the object for the function call. Since, you want to get PartialMatch return value when a keysequence in incomplete.
If you use s2.matches(s1), you won't get that.

Of course, in your case it doesn't really matter, since you don't handle multiple keysequences. So, for your case you might as well just compare
    if (event.modifiers().value() + event.key() == Qt::CTRL + Qt::Key_F7)
instead of going through QKeySequence. Of course, using QKeySequence is useful if you plan on translating your application, since QKeySequence allows for creating the keysequence based on stings, like you did above. But then you need to wrap it in tr(), so:
    QKeySequence s1 = new QKeySequence(event.modifiers().value() + event.key());
    QKeySequence s2 = new QKeySequence(tr("Ctrl+F7"));
    s1.matches(s2)

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Message 7 in thread

Hi there,

Thanks for the input and feedback. This is used in an curses-like 
application used inside a QGraphicsView to add shortcuts to text based 
menus. The reason for the text representation of the key sequence is that it 
will be rendered in the text menu like Cut       Ctrl-X etc...

-=Børge



"Marius Storm-Olsen" <marius@xxxxxxxxxxxxx> wrote in message 
news:47160A43.2070503@xxxxxxxxxxxxxxxx