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Qt-interest Archive, February 2007
Signal Slot

Message 1 in thread

Hi,

Is there any way that I can pass a parameter to a slot which is not in
signal.

Something like:

 

For(int i=0;i<3;i++)

 
CONNECT(obj1,SIGNAL(clicked()),obj2,SLOT(user_defined_slot(i)));

The main issue is how to pass this "i" to t he slot called?

 

Thanks & Regards 
Shuchi Agrawal
__________________Honeywell 
Honeywell Technology Solutions Lab
Message 2 in thread

Suchi, Agrawal (IE10) wrote:
> Hi,
> 
> *Is there any way that I can pass a parameter to a slot which is not in
> signal.*
> 
> *Something like:*
> 
> * *
> 
> *For(int i=0;i<3;i++)*
> 
> *           
> CONNECT(obj1,SIGNAL(clicked()),obj2,SLOT(user_defined_slot(i)));*
> 
> *The main issue is how to pass this âiâ to t he slot called?*

Have a look at the class QSignalMapper.

hth
M

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Message 3 in thread

On Thursday 22 February 2007 12:50, Suchi, Agrawal (IE10) wrote:
> Hi,
>
> Is there any way that I can pass a parameter to a slot which is not in
> signal.
>
> Something like:
>
> For(int i=0;i<3;i++)
>     CONNECT(obj1,SIGNAL(clicked()),obj2,SLOT(user_defined_slot(i)));
>
> The main issue is how to pass this "i" to t he slot called?

Take a look at QSignalMapper, http://doc.trolltech.com/4.2/qsignalmapper.html. 
It can do exactly what you are wanting.

-- 
 [ signature omitted ]
Message 4 in thread

Suchi, Agrawal (IE10) wrote:
> Hi,
> 
> *Is there any way that I can pass a parameter to a slot which is not in 
> signal.*
> 
> *Something like:*
> 
> * *
> 
> *For(int i=0;i<3;i++)*
> 
> *            
> CONNECT(obj1,SIGNAL(clicked()),obj2,SLOT(user_defined_slot(i)));*
> 
> *The main issue is how to pass this “i” to t he slot called?*

Check QSignalMapper.

Matthieu

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 [ signature omitted ]
Message 5 in thread

Ya I got the answer.
Thanks a lot for all replies :)

Thanks & Regards,
Shuchi

-----Original Message-----
From: Matthieu Brucher [mailto:matthieu.brucher@xxxxxxxxxx] 
Sent: Thursday, February 22, 2007 5:32 PM
To: QT Newsletter
Subject: Re: Signal Slot

Suchi, Agrawal (IE10) wrote:
> Hi,
> 
> *Is there any way that I can pass a parameter to a slot which is not
in 
> signal.*
> 
> *Something like:*
> 
> * *
> 
> *For(int i=0;i<3;i++)*
> 
> *            
> CONNECT(obj1,SIGNAL(clicked()),obj2,SLOT(user_defined_slot(i)));*
> 
> *The main issue is how to pass this "i" to t he slot called?*

Check QSignalMapper.

Matthieu

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 [ signature omitted ]