Re: GtkDrawingArea color problem ;)

["jeff rob" <jeffrobins747 hotmail com>]

> Message: 5
> Date: Fri, 18 Nov 2005 15:41:45 -0600
> From: Bob Caryl <bob fis-cal com>
> Subject: Re: GtkDrawingArea color problem ;)
> To: congo imafexbb sk
> Cc: gtkmm-list gnome org
> Message-ID: <437E4A99 9070004 fis-cal com>
> Content-Type: text/plain; charset="iso-8859-2"

> Derive your own drawingArea from Gtk::DrawingArea and Gtk::Window::add
> to your derived window class.  Set your drawingArea's  background color
> in its constructor.  Create or load your images where you will, but put
> code into your derived drawingArea's on_expose_event method that acesses
> those images and does the rendering in that method.

> Bob Caryl

I don't know if you'll get this Jan, but if you're still having problems 
with the background and Bob's suggestion doesn't help, I can tell you what I 
did to fix the problem I had (I still have to place it on the list).

First:
    Try placing the get_window()->set_background(Gdk::Color) command in the 
on_realize() function.  I don't think you can set window properties until 
on_realize().

Second:
    Make sure that only one object of the class is created.  I called a 
second constructor from a default one since I needed some options passed to 
it, but didn't want to rewrite the class.

Anyways, the first object was created, my values were placed into it and 
then a copy was made, from a default object, without my values or functions 
run from the constructor, and the first one was deleted and the copy was 
renamed to the origional.

Summation:  All of my values from the constructor disappeared and I had to 
re-insert them later by rewriting the class.

Third:
    Create your object as a private member of your base class, not in one 
of the functions of the class.  I had more wierd problems with this, 
specifically with regards to background color.

    --Jeff Robins

PS:  Sorry for the length, especially if this has been solved.