[Glade-users] extend Drawing Area class

[Michael Kleiber]

Jeff Simpson wrote:
> Oh, perfect! That will help a ton, thanks!
> 
> Do you happen to know offhand if it can be done without needing the
> XML file? I don't think I have a need for one, since I'm using just
> the defaults for drawingArea and all other customizations will be
> right in the code. Do you know what I need to set in glade to make it
> fill in the extra parameters for the constructor (right now, glade is
> leaving the constructor parameters empty in the custom widget) Thanks!

The example uses libglade and therefore needs the more complex 
constructor. This is just as described in the gtkmm/glade example - it 
is needed for get_widget_derived() to work.
If you use glade generated code I think you just use the normal (no 
parameters) constructor and go from there - but as I have never done 
that I can only speculate.