Re: Gtk window.show() (maybe just c++ related)

[eric jrdn2 <eric_jrdn2 yahoo fr>]

Maik Beckmann wrote:
> > Hi,
> >
> > Please consider any foo widget with a show() method.
> > Why :
> > foo* foo1=new(foo);
> > foo->show();
> > shows the widget, but:
> >
> > foo foo1;
> > foo.show();
> >
> > does not?
> >
> >     
>
>
> I assume the code you posted is inside a constructor or GUI-arrange
> function. 
>
> Consider this:
>
> { // enter scope
>     ...
>     foo* foo_ptr=new(foo);
>     bar_container->add(*foo_ptr);
>     foo_ptr->show();
>  
>     foo foo_obj;
>     bar_container->add(foo_obj);
>     foo_obj.show();
>     ...
> } // leave scope 
>
> foo_obj will be destroyed, gtk+ can't show it because its gone.
> foo_ptr is destroyed too, but the object it pointed to still lives.
>
>
> MfG Maik
>
>
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>
>   
Thank you, the assumptions you made are right. Another newbie question:
Should I call delete() on each widget created with new() inside this 
widget1, or will widget1 do it itself when it will die?
Sorry for such a lame understanding of c++ :-)



	

	
		
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