XtSetSensitive(3Xt) SDK X11 R4.11MU05 XtSetSensitive(3Xt)
NAME
XtSetSensitive, XtIsSensitive - 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
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