Re: a re-display method for my DrawingArea

[Paul Davis <paul linuxaudiosystems com>]

On Wed, 2006-03-01 at 22:04 +0000, eduardo fiss beloni wrote:
> Hello
> 
> someone knows a method to re-display a
> Gtk::DrawingArea derived whenever I want.
> 
> for example:
> In my Gtk::Window derived, I have a Gtk::Button and a
> Gtk::DrawingArea derived and whenever I press the
> Gtk::Button (the button_pressed() event will be
> called), the Gtk::DrawingArea derived must be updated.
> however I don't know this update method...

call the queue_update() method of the drawing area from the button press
handler.

the drawing area will get an expose event; implement on_expose_event()
for the DrawingArea derived object and make it draw stuff there.