Method GTK.Dial()->set_view_only()

Method set_view_only: GTK.Dial set_view_only(int view_only)
Description: Specifies whether or not the user is to be able to edit the value represented by the dial widget. If view_only is TRUE, the dial will be set to view-only mode, and the user will not be able to edit it. If view_only is FALSE, the user will be able to change the valuerepresented.