[Qt-interest] customised signals and slots in qt

[Malyushytsky, Alex]

>> Am I missing something here??



What is the problem?



Since you don’t provide a real code it is tough to check it.

It seems that you emit signal, connect signal to some slot, but there might be always small details

which can’t be checked if you present the code the way you do.

For example  “void funct()” must be a member function of class A.



I would also recommend always check what “connect” returns.

It helps to avoid silly problems.



Regards,



Alex


From: qt-interest-bounces+alex=wai.com at qt.nokia.com [mailto:qt-interest-bounces+alex=wai.com at qt.nokia.com] On Behalf Of Sahana Bhaskar
Sent: Thursday, July 07, 2011 6:23 AM
To: qt-interest at qt.nokia.com
Subject: [Qt-interest] customised signals and slots in qt


Hi all,



I am trying to implement a customized signal and slot functionality. I have 2 classes say A and B. Now on some event (say when a certain method is called) I want object of A to send signals to object of B and other objects of A itself. I want to know the steps. My IDE is visual studio. Also B  is derived from   QFileDialog. So in essence I have to send a signal from object of class A to another class B(a filedialog object).



I have done these things so far

1)   In the header of A(a.h) I have declared the signals as



Class A : public QObject, public<someotherclass>

{



Q_OBJECT

...



Signal:

Void signal1( );



}



2) written a connect statement in A.c as:



Connect(object_a, SIGNAL( signal1()),object_b, SLOT(slot1()));



Void funct()

{

Emit signal1();

}





3) defined and declared the slot in B.c and B.h



Am I missing something here??



Thanks,

Sahana




















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