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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