Re: GtkNotebook signals

[Jean Bréfort <jean brefort normalesup org>]

Le mardi 22 novembre 2005 �5:20 -0500, ANDREW PAPROCKI, BLOOMBERG/ 731
LEXIN a �it :
> Can someone fill me in if there is proper documentation for the signals on 
> GtkNotebook? Specifically, these:
> 
> "change-current-page"
> "focus-tab"
> "select-page"
> "switch-page"
> 
> If an application wishes to prevent the notebook from switching pages if some 
> type of validation fails on the current existing page, is "select-page" the 
> proper signal to use with a return of FALSE?

I had this problem with GChemPaint a long time ago. To solve it, I use
the "expose-event" signal for the child widget. When this signal is
fired, I check the state of the current active page, and if the
validation fails, I use gtk_notebook_set_current_page to set the active
page.
http://savannah.nongnu.org/cgi-bin/viewcvs/gchempaint/gchempaint/src/standaloneapp.cc
the code is in :
gcpStandaloneApp::SetActive (gcpDocument* pDoc, GtkWidget* w) (line 963
or so).
 
This code is somewhat old now, so I can't remember why I could not use
the GtkNotebook signals... so there might beis a better solution ;-)

> If someone can explain these in a bit more detail, we could update the function 
> comments so the docs are more clear.
> 
> Thanks,
> 
> Andrew
> Bloomberg LP
> 
> 
> 
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