Qt-interest Archive, March 2008
Connecting a signal to a slot with different parameters.
Message 1 in thread
When defining a connection you only put in the parameter types for the
Signal and the Slots.
But is it possible to have a signal with one parameter call a slot with
2 parameters?
For example in object B i have a SLOT setStuff(int i, QString value).
In object A i have Signal send(int i).
Is it possible, in any way, to connect A::send to B::setStuff? Or is it
only possible to connect signals and slots that have the exact same
parameter list?
Thank you for any replies.
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Message 2 in thread
In this case... just create the slot setStuff to have a default value
for value...
Ie
Void setStuff( int i, QString value = QString() )
Scott
> -----Original Message-----
> From: Kevin [mailto:spifffers@xxxxxxxxxxx]
> Sent: Tuesday, March 18, 2008 2:23 PM
> To: qt-interest@xxxxxxxxxxxxx
> Subject: Connecting a signal to a slot with different parameters.
>
> When defining a connection you only put in the parameter types for the
> Signal and the Slots.
>
> But is it possible to have a signal with one parameter call a slot
with
> 2 parameters?
>
> For example in object B i have a SLOT setStuff(int i, QString value).
>
> In object A i have Signal send(int i).
>
> Is it possible, in any way, to connect A::send to B::setStuff? Or is
> it
> only possible to connect signals and slots that have the exact same
> parameter list?
>
> Thank you for any replies.
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
> "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/
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Message 3 in thread
Thanks for the replies. Stupid question. I thought i had tested with a
default parameter value and couldn't get it to work. Turns out i didn't
actually test that.
Thank you all.
Scott Aron Bloom wrote:
> In this case... just create the slot setStuff to have a default value
> for value...
>
> Ie
>
> Void setStuff( int i, QString value = QString() )
>
> Scott
>
>> -----Original Message-----
>> From: Kevin [mailto:spifffers@xxxxxxxxxxx]
>> Sent: Tuesday, March 18, 2008 2:23 PM
>> To: qt-interest@xxxxxxxxxxxxx
>> Subject: Connecting a signal to a slot with different parameters.
>>
>> When defining a connection you only put in the parameter types for the
>> Signal and the Slots.
>>
>> But is it possible to have a signal with one parameter call a slot
> with
>> 2 parameters?
>>
>> For example in object B i have a SLOT setStuff(int i, QString value).
>>
>> In object A i have Signal send(int i).
>>
>> Is it possible, in any way, to connect A::send to B::setStuff? Or is
>> it
>> only possible to connect signals and slots that have the exact same
>> parameter list?
>>
>> Thank you for any replies.
>>
>> --
>> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
>> "unsubscribe" in the subject or the body.
>> List archive and information: http://lists.trolltech.com/qt-interest/
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/
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Message 4 in thread
On Tuesday 18 March 2008 22:22:53 Kevin wrote:
> When defining a connection you only put in the parameter types for the
> Signal and the Slots.
>
> But is it possible to have a signal with one parameter call a slot with
> 2 parameters?
>
> For example in object B i have a SLOT setStuff(int i, QString value).
>
> In object A i have Signal send(int i).
>
> Is it possible, in any way, to connect A::send to B::setStuff? Or is it
> only possible to connect signals and slots that have the exact same
> parameter list?
possible if you either have a default value
setStuff(int i, QString value=QString("default")).
or use Qxt::bind
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