The number of top-level widgets in a frame or window that the user has selected for direct manipulation.
Data type: INTEGER
Access: Read-only
Applies to: DIALOG-BOX widget, FRAME widget, WINDOW widget
For a window, this attribute returns the number of selected frames. For a frame or dialog box, this attribute returns the number of selected field-level widgets. You can use the GET-SELECTED-WIDGET( ) method to access the individual selected widgets.