signal callback delegate or function to connect
void callback(gstgl.glwindow.GLWindow gLWindow)
gLWindow 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 WindowHandleChanged signal.
Will be emitted when the window handle has been set into the native implementation, but before the context is re-activated. By using this signal, elements can refresh associated resource without relying on direct handle comparision.