Re: masking a window - having a window with transparent borders?

[Akos Maroy <darkeye tyrell hu>]

Paul Davis wrote:
> > I'm trying to create a custom window, what would have rounded edges. to 
>
>
>    [ ... ]
>
> this is old (gtk--) code, but it worked. there is a little more
> infrastructure required to actually use this code, but you'll get the
> idea. a "Pix" is just a collection of pixmaps/bitmaps.

thanks for the sample. first, I had some difficulty generating the masks 
from my Gdk::Pixbuf's, but I found the following call:

Gdk::Pixbuf::render_pixmap_and_mask()

I hope this is the proper way to create those masks.


but, then calling Gtk::Window::shape_combine_mask() with the appropriate 
mask has the strange effect, that it does not combine masks with each 
subsequent call, but actually replaces the mask of the window with the 
bitmap supplied at the last call to shape_combine_mask().

is this the intended behaviour? or maybe I'm doing something wrong?

if this is the intended behaviour, then the name of the function 
(combine_mask) is quite misleading. also, I understand that then I 
should combine the masks for my images into a single bitmap, and call 
shape_combine_mask() with that one bitmap. how do I combine multiple 
bitmaps?


Akos