signal callback delegate or function to connect
void callback(int width, int height, gdk.surface.Surface surface)
width the current width (optional)
height the current height (optional)
surface 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 Layout signal.
Emitted when the size of surface is changed, or when relayout should be performed.
Surface size is reported in ”application pixels”, not ”device pixels” (see gdk.surface.Surface.getScaleFactor).