Re: AW: [paragui-users] Button-ID within a WidgetList???

[Alexander Pipelka]

You have to set the callback for every button.
It's perfectly legal to connect any number of buttons to *one* callback
function.

The callback function looks like this:

bool callback(int id, PG_Widget* widget, unsigned long data, void
*clientdata)

You can use the PARAGUI_CALLBACK macro to simplify the callback
definition.

Consider this:

class MyClass : public PG_EventObject {
        PARAGUI_CALLBACK(handler) {
                switch(id) {
                        case 1:
                        .
                        case 2:
                        .
                }
                return true;
        }
}

MyClass obj;
myButton1.SetEventObject(MSG_BUTTONCLICK, &obj,
(MSG_CALLBACK_OBJ)&MyClass::handler);
myButton2.SetEventObject(MSG_BUTTONCLICK, &obj,
(MSG_CALLBACK_OBJ)&MyClass::handler);

Alex

Am Mit, 2002-06-26 um 11.14 schrieb Himmler Andreas /OI&T:
> Hi!
> 
> My problem is : I plan to include over 20 buttons in one WidgetList and if I
> have to use SetEventCallback I have to write a function for each button, or
> is there another way? 
> 
> The things to do if a button is clicked are nearly the same for each one -
> so one big function would have been better for my reasons... Is there a way
> to send the CALLBACK-function the button-id or to check it out or something
> like that???
> 
> Bye,
> 
> Himmler Andreas
> 
> -----Ursprüngliche Nachricht-----
> Von: Alexander Pipelka [mailto:address@hidden
> Gesendet: Mittwoch, 26. Juni 2002 10:23
> An: paragui-users
> Betreff: Re: [paragui-users] Button-ID within a WidgetList???
> 
> 
> These events are only passed one level up (from child to parent).
> In this case your buttons are children from the widgetlist which is a
> child of myWidget (2 levels).
> 
> Please use SetEventCallback/SetEventObject (MSG_BUTTONCLICK) to connect
> your buttons.
> 
> Alex
> 
> Am Mit, 2002-06-26 um 10.07 schrieb Himmler Andreas /OI&T:
> > Hi!
> > 
> > I made a new ThemeWidget-class which has an WidgetList in it an a few
> > buttons are in this WidgetList. How can I see, if one of these buttons is
> > pressed and test which one?
> > 
> > Do I have to make a new WidgetList-class which it's own
> > eventButtonClick-function??? If yes, which things should I care of?
> > 
> > Now, my code looks like:
> > 
> > ....
> >     myWidget::myWidget(PG_Widget* parent, PG_Rect r) :
> > PG_ThemeWidget(parent, r, true)
> >     {
> >             ....
> >             PG_WidgetList* WL1;
> >             PG_Button* Test1;
> >             PG_Button* Test2;
> >             
> >             Test1=new PG_Button(NULL,10,PG_Rect(...),"test1");
> >             Test2=new PG_Button(NULL,11,PG_Rect(...),"test2");
> > 
> > 
> >             WL1->AddWidget(Test1);
> >             WL1->AddWidget(Test2);
> >     };
> > 
> >     myWidget::eventButtonClick(int id, PG_Widget* widget)
> >     {
> >             // here the prog never comes, if one of the buttons in the
> > widgetlist is pressed....
> >     };
> > ....
> > 
> > Tanks for all hints and tipps!
> > 
> > Bye,
> > 
> > 
> > Himmler Andreas
> >     
> > 
> > 
> > _______________________________________________
> > paragui-users mailing list
> > address@hidden
> > http://mail.freesoftware.fsf.org/mailman/listinfo/paragui-users
> > 
> 
> 
> 
> 
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