signal callback delegate or function to connect
void callback(int width, int height, gtk.drawing_area.DrawingArea drawingArea)
width the width of the viewport (optional)
height the height of the viewport (optional)
drawingArea the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to Resize signal.
Emitted once when the widget is realized, and then each time the widget is changed while realized.
This is useful in order to keep state up to date with the widget size, like for instance a backing surface.