X Version 11 (Release 5)
XtSetSensitive(Xt)
XtSetSensitive --
set and check a widget's sensitivity state
Syntax
void XtSetSensitive(w, sensitive)
Widget w;
Boolean sensitive;
Boolean XtIsSensitive(w)
Widget w;
Arguments
sensitive-
Specifies a Boolean value that indicates whether the widget should receive
keyboard and pointer events.
w-
Specifies the widget.
Description
The XtSetSensitive function first calls XtSetValues
on the current widget with an argument list specifying that the
sensitive field should change to the new value.
It then recursively propagates the new value
down the managed children tree by calling XtSetValues
on each child to set the ancestor_sensitive to the new value if the new
values for sensitive and the child's ancestor_sensitive are not the same.
XtSetSensitive calls XtSetValues
to change sensitive and ancestor_sensitive.
Therefore, when one of these changes,
the widget's set_values procedure should
take whatever display actions are needed
(for example, greying out or stippling the widget).
XtSetSensitive maintains the invariant that if parent has either
sensitive or ancestor_sensitive False,
then all children have ancestor_sensitive False.
The XtIsSensitive function returns True or False
to indicate whether or not user input events are being dispatched.
If both core.sensitive and core.ancestor_sensitive are True,
XtIsSensitive returns True;
otherwise, it returns False.
See also
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003