GtkFrame adaption again

[Carsten Burstedde <bursted iam uni-bonn de>]

Hi,

I did not receive any answers so far - If you think this mail is out of
place or someone has a better/different way of achieving this, please
tell me.

Otherwise, any help would be appreciated.

--- original message:

I modified the gtkframe widget to do the following:

/-----------  frame.allocation -----------\
|
|          empty space
|
|          /---- frame shadow/line ----\
|          |      child widget
|          |
|

so that the child widget may change size and is always directly bounded
by the frame shadow line and centered inside the frame allocation space.

This works fine until the child widget changes in size: On increase, the
frame is not told to redraw itself, so the frame shadow can't be drawn
to fit around the (now bigger) child; the old shadow is overdrawn by the
child (in my case a drawing area, resized by gtk_drawing_area_size). So
it is missing. If the widget decreases in size, there is again no call
to the frame drawing routines, so the old (too big) shadow stays there
and cannot be overdrawn (I put the necessary background drawing stuff
inside the frame drawing routine).

Normal exposes work, then the shadow appears/disappears as appropriate.

What can I do? Do I have to set up some virtual function (maybe for
gtkcontainer)?

Thanks,

Carsten