167 lines
3.0 KiB
Plaintext
167 lines
3.0 KiB
Plaintext
.ds tk X Toolkit
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xI Intrinsics
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.ds xW X Toolkit Athena Widgets \- C Language Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ds Rn 3
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.ds Vn 2.2
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.hw XtMake-Geometry-Request XtQuery-Geometry wid-get
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.ps \\n(PS
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.\".if \\n(VS>=40 .vs \\n(VSu
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.\".if \\n(VS<=39 .vs \\n(VSp
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..
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.de De
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.ce 0
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.if \\n(BD .DF
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.nr BD 0
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.in \\n(OIu
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.if \\n(TM .ls 2
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.sp \\n(DDu
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.fi
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..
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.de FD
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.LP
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.KS
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.TA .5i 3i
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.nf
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..
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.de FN
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.fi
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.KE
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.LP
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..
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.de IN \" send an index entry to the stderr
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..
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.de C{
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.KS
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.de C}
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.DE
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.R
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.de ZN
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..
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.de NT
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.ne 7
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.ds NO Note
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. \" Note End -- doug kraft 3/85
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.de NE
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..
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.ny0
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.TH XtSetSensitive 3Xt "Release 3" "X Version 11" "XT FUNCTIONS"
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.SH NAME
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XtSetSensitive, XtIsSensitive \- set and check a widget's sensitivity state
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.SH SYNTAX
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void XtSetSensitive(\fIw\fP, \fIsensitive\fP)
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.br
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Widget \fIw\fP;
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.br
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Boolean \fIsensitive\fP;
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.LP
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Boolean XtIsSensitive(\fIw\fP)
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.br
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Widget \fIw\fP;
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.SH ARGUMENTS
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.IP \fIsensitive\fP 1i
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Specifies a Boolean value that indicates whether the widget should receive
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keyboard and pointer events.
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.IP \fIw\fP 1i
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Specifies the widget.
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.SH DESCRIPTION
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The
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.ZN XtSetSensitive
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function first calls
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.ZN XtSetValues
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on the current widget with an argument list specifying that the
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sensitive field should change to the new value.
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It then recursively propagates the new value
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down the managed children tree by calling
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.ZN XtSetValues
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on each child to set the ancestor_sensitive to the new value if the new
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values for sensitive and the child's ancestor_sensitive are not the same.
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.LP
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.ZN XtSetSensitive
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calls
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.ZN XtSetValues
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to change sensitive and ancestor_sensitive.
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Therefore, when one of these changes,
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the widget's set_values procedure should
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take whatever display actions are needed
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(for example, greying out or stippling the widget).
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.LP
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.ZN XtSetSensitive
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maintains the invariant that if parent has either sensitive
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or ancestor_sensitive
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.ZN False ,
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then all children have ancestor_sensitive
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.ZN False .
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.LP
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The
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.ZN XtIsSensitive
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function returns
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.ZN True
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or
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.ZN False
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to indicate whether or not user input events are being dispatched.
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If both core.sensitive and core.ancestor_sensitive are
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.ZN True ,
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.ZN XtIsSensitive
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returns
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.ZN True ;
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otherwise, it returns
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.ZN False .
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.SH "SEE ALSO"
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.br
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\fI\*(xT\fP
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.br
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\fI\*(xL\fP
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