(Note: this is a special-purpose function for the framebuffer port,
that causes GTK+ to draw its own window border. For most applications,
gtkWindowSetDecorated instead, which tells the window
manager whether to draw the window border.)
- a boolean
If this function is called on a window with setting of
it is realized or showed, it will have a "frame" window around
window->window, accessible in
window->frame. Using the signal
frame_event you can receive all events targeted at the frame.
This function is used by the linux-fb port to implement managed
windows, but it could conceivably be used by X-programs that
want to do their own window decorations.