[Gambas-user] Can you put a big box into a small one?

[Doriano Blengino]

Benoît Minisini ha scritto:
>> 2010/9/3 Benoît Minisini <gambas at ...1...>:
>>     
>>> Controls are always clipped by their container, because they are windows
>>> inside windows, and this is how X-Window works.
>>>
>>> *But* (there is always a *but*), now QT4 and GTK+ do not create one
>>> window for each control. They manage the imbrication internally. So
>>> technically they can make a control draw outside of its frame. But this
>>> is generally avoided.
>>>
>>> Regards,
>>>
>>> --
>>> Benoît Minisini
>>>       
>> But, is possible to do that in Gambas or this behaviour indicates a
>> problem in my code?
>>     
>
> The rule is: a control never draws outside of its frame, even if some specific 
> cases it is technically possible (i.e. the container cannot forbid that).
>   
Sorry for dropping in - I think that having a widget bigger than its 
container is different than drawing outside a container. Can it be that 
you two are talking about two different things?

About the first case, to be sincere, I never tried to experiment with 
Gambas, nor with GTK, but I am sure that, at least on ms windows, it is 
possible. Every widget can extend or be put totally outside the visible 
part of its container - nothing strange: simply it will be in part or in 
total invisible.

About the second case, if a widget does not have an own X11 window, it 
will be painted on the surface of its container, and again, anything 
will be visible outside of its container.

So, the title of this thread has a single reply: yes. You can put a big 
box inside a smaller one. If this is not possible, then there is a bug 
somewhere or some "container rearranging its childrens" logic.

Regards,
Doriano