if expression actions endif
Where parts of a dialog are selectively displayed, you can check which parts are managed and realized using the IsManaged and IsRealized expressions.
IsVisible is intended for small (VGA) displays where the whole of a dialog may not be visible on the screen. This is important as Motif TAB navigation traversal model ignores controls which are off screen.
IsHere simply checks whether the widget exists in the current shell.
in ApplicationShell cascade file_menu select fm_menu.fm_exit if IsVisible(save_dialog) in save_dialog push save.ok else message Save Dialog cannot be seen endif
See also: