Assigns the method widget to the tab position before a specified widget. Both the method widget and the specified widget must be in the same field group.
A handle to the widget before whose tab position you want to move the method widget.
If the operation is successful, the method returns TRUE. To set the first or last tab position, set the FIRST-TAB-ITEM or LAST-TAB-ITEM attribute (respectively) for the field group.
If
handle specifies a frame, the tab order of the method widget is positioned so that it precedes the first widget parented by the frame in that frames own tab order. For more information on how frames owned by a field group participate in the tab order of that field group, see the
FRAME widget reference entry.