setError
Sets an error on the area which will be shown instead of the GL rendering.
This is useful in the signal@Gtk.GLArea::create-context signal if GL context creation fails.
Parameters
error
a new GError, or null to unset the error
Sets an error on the area which will be shown instead of the GL rendering.
This is useful in the signal@Gtk.GLArea::create-context signal if GL context creation fails.
a new GError, or null to unset the error