Re: modify_bg fails on windowless widget should produce gtk_warning

[george young <gry ll mit edu>]

On Tue, 20 Jul 2004 10:34:24 -0400
george young <gry ll mit edu> threw this fish to the penguins:

> [gtk+-2.4, pytgk-2.0.0]
> When I do modify_bg on a Frame widget, nothing happens.  I understand 
> (after hours of hacking) that this is because a Frame has no window.
>
> It's fine that it fails, this is just an aspect of the toolkit, but 
> is there some reason it can't emit a warning to stderr (or where ever
> warnings are being emitted/logged), so the app developer doesn't waste
> time tracking down a silent failure?  
> It looks like there's a GTK_WIDGET_NO_WINDOW (widget) that could be 
> easily tested...

I stand corrected, GTK_WIDGET_NO_WINDOW is not on point here.
Nonetheless, there is a set of widgets that do not change color when
modify_bg is applied, and do not emit any warning or error.  The case
I ran into was a VBox, but I gather there are several:

 Alignment
 AspectFrame
 Arrow
 Bin
 HBox
 VBox
 Frame
 Image
 Label
 Pixmap
 ScrolledWindow
 HSeparator
 VSeparator
 Table

[from http://www.async.com.br/faq/pygtk/index.py?req=show&file=faq03.005.htp]

-- 
"Are the gods not just?"  "Oh no, child.
What would become of us if they were?" (CSL)