Notebooks in Gtk+ v1.2.x

[Jim Parker <hopeye cfl rr com>]

G'Day !

Well no one responded to my last message.  I'll assume it is do to my 
poor communication skills and not being filtered to /dev/null  ;-)

I am developing a CAD program.  What I am trying to do is have multiple 
drawing areas (OpenGL) available via a
notebook.  Each drawing area needs access to the toolbar and menus, but 
should have diffrent scale factors and viewing angles, among other 
things.  It is not known how many possible drawing areas will be open 
at any given time.

I have been able to create the notebook and a couple of windows, but 
can not figure out how to get them to respond to menu commands 
independently.

My current thought is to create a struct, something like:

        typedef struct {
          GtkWidget  *notebook_page;
          GtkWidget  *drawing_area;
          gint        page_number;
          gfloat      xRotation;
          gfloat      yRotation;
          gfloat      zRotation;
          gfloat      scale;
        } typNotebookPage;

Now as I add a drawing area, I can fill the struct and add it to a 
linked list.

Now here is where I am confused.  I figure that, I can find the node in 
the linked list during a page switch event, and use the memory address 
to assign to a "current" struct, giving me access to the scale and 
rotation
variables.  This somehow does not seem to be the best way to do it.  I 
think that I will still have all my drawing areas respond to menu 
commands, when in affect they shoud be frozen.

My guess is that what I am trying to do is something similar to what 
the do with spreadsheets.  I tried to figure out how gnumeric did it, 
but got lost trying to follow the code.

Anybody have any thoughts or suggestions on this problem.  Am I on the 
right track ?

cheers,
Jim Parker

http://gtkcad.sourceforge.net/