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.ds tk X Toolkit

.ds xT X Toolkit Intrinsics \- C Language Interface

.ds xI Intrinsics

.ds xW X Toolkit Athena Widgets \- C Language Interface

.ds xL Xlib \- C Language X Interface

.ds xC Inter-Client Communication Conventions Manual

.ds Rn 3

.ds Vn 2.2

.hw XtSet-Sensitive XtIs-Sensitive wid-get

.na

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.TH XtSetSensitive __libmansuffix__ __xorgversion__ "XT FUNCTIONS"

.SH NAME

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

.SH SYNTAX

.HP

void XtSetSensitive(Widget \fIw\fP, Boolean \fIsensitive\fP);

.HP

Boolean XtIsSensitive(Widget \fIw\fP);

.SH ARGUMENTS

.IP \fIsensitive\fP 1i

Specifies a Boolean value that indicates whether the widget should receive

keyboard and pointer events.

.IP \fIw\fP 1i

Specifies the widget.

.SH DESCRIPTION

The

.ZN XtSetSensitive

function first calls

.ZN 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

.ZN 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.

.LP

.ZN XtSetSensitive

calls

.ZN 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).

.LP

.ZN XtSetSensitive

maintains the invariant that if parent has either sensitive

or ancestor_sensitive

.ZN False ,

then all children have ancestor_sensitive

.ZN False .

.LP

The

.ZN XtIsSensitive

function returns

.ZN True

or

.ZN False

to indicate whether or not user input events are being dispatched.

If both core.sensitive and core.ancestor_sensitive are

.ZN True ,

.ZN XtIsSensitive

returns

.ZN True ;

otherwise, it returns

.ZN False .

.SH "SEE ALSO"

.br

\fI\*(xT\fP

.br

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