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NAME

       XtSetSensitive, XtIsSensitive - set and check a widget’s sensitivity
       state

SYNTAX

       void XtSetSensitive(Widget w, Boolean sensitive);

       Boolean XtIsSensitive(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