Re: Help with closing a notebook page (GTK2)

[Bill C <billc netspace net au>]

On 04/07/11 06:26, Neil Munro wrote:
> On 3 July 2011 19:31, Thomas  Bollmeier<TBollmeier web de>  wrote:
> > > ----UrsprÃngliche Nachricht-----
> > > Von: "Neil Munro"<neilmunro gmail com>
> > > Gesendet: 02.07.2011 23:40:02
> > > An: gtk-app-devel-list gnome org
> > > Betreff: Help with closing a notebook page (GTK2)
> > >
> > > Hi, I have used pygtk before so I am familiar with some of the basic
> > > concepts of gtk, but this is my first attempt with an actual gtk+ C
> > > application and I have run into a few issues.
> > >
> > > I have a notebook that I wish to have a close button on the page tabs
> > > that when clicked closes the tabs.
> > >
> > > I know that it's a bit off a faf to do as you don't know the page
> > > prior to the event. So you have to dynamically detect which tab is
> > > being closed by using a tab child widget.
> > >
> > > Now I believe I have done this in code, except it always returns -1
> > > which then firmly tells me I have done something wrong.
> > >
> > > I have attached the code for your reference in the hopes that someone
> > > shall be able to point out my no doubt simple mistake.
> > >
> > > Many thanks in advance,
> > > Neil Munro
> > I faced a similar problem when I wrote an editor for the first version of my gobjectcreator tool some time 
> > ago. It was
> > implemented in PyGTK - nevertheless it should work in C as well. The solution may not be elegant but it
> > worked:
> > I registered a handler for the "clicked"-signal of the close button within the tab label widget (a GtkHBox).
> > Within the handler implementation I looped over all pages of the notebook and checked whether the button 
> > instance
> > in the page label was identical to the sender instance of the "clicked"-signal. If yes then I had to remove 
> > the
> > corresponding page.
> > You can find the code example here:
> >
> > https://github.com/ThomasBollmeier/GObjectCreator/blob/master/gobject_creator/ui/documents_view.py
> >
> > (see lines 342ff. and 378ff. respectively)
> >
> > Hope that helps.
> >
> > Regards,
> > Thomas
> >
> >
> >
> > ___________________________________________________________
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> Thanks to this and Bills suggestion the correct page closes, but I
> need to determine a way to re-calculate the page as soon as a tab is
> closed, am sure I will figure something out, but thanks for the
> patience and help!
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Hi Neil

Yes the page numbers can change when a page is closed, so you cant use 
original page numbers directly to switch pages.

I think I redesigned so that I did not use page numbers. Let the user 
switch pages and process the page the user is working with.  Ensure the 
user cant delete pages that are prior to a page you want to reference 
directly.  As Thomas said...  Not totally elegant.

Rgds Bill