[Freeciv-Dev] Re: GTK gurus: one question

[Vasco Alexandre Da Silva Costa <vasc@xxxxxxxxxxxxxx>]

On Tue, 27 Mar 2001, Tuomas Airaksinen wrote:

> I need to show map_canvas widget on two pages of my notebook: 
> firstly in "City" and secondly in "Happiness" page. So - I just tried
> to gtk_container_add(GTK_CONTAINER(frame), pdialog->map_canvas) 
> another time - frame is show, but map_canvas is not. Only following 
> gtk error appears:
> 
> Gtk-CRITICAL **: file gtkcontainer.c: line 715 (gtk_container_add):
> assertion `widget->parent == NULL' failed.
> 
> What do I need to "duplicate" widget, or do I need to make all things
> twise (create a new array and so on) to show it in second place?

IIRC a GTK+ widget can only have a single parent at any given time.

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Vasco Alexandre da Silva Costa @ Instituto Superior Tecnico, Lisboa