XtSetSensitive(3Xt) MIT X11R4 XtSetSensitive(3Xt)
XtSetSensitive, XtIsSensitive - set and check a widget's sensitivity state
void XtSetSensitive(w, sensitive)
sensitive Specifies a Boolean value that indicates whether the widget should receive keyboard and pointer events.
w Specifies the widget.
The function first calls 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 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.
calls 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).
maintains the invariant that if parent has either sensitive or ancestor_sensitive then all children have ancestor_sensitive
The function returns or to indicate whether or not user input events are being dispatched. If both core.sensitive and core.ancestor_sensi-
tive are returns otherwise, it returns
X Window System Toolkit: The Complete Programmer's Guide and Specification, Paul J. Asente and Ralph Swick
X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys