188 lines
4.3 KiB
Groff
188 lines
4.3 KiB
Groff
.\" Copyright 1993 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining
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.\" a copy of this software and associated documentation files (the
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.\" "Software"), to deal in the Software without restriction, including
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.\" without limitation the rights to use, copy, modify, merge, publish,
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.\" distribute, sublicense, and/or sell copies of the Software, and to
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.\" permit persons to whom the Software is furnished to do so, subject to
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.\" the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be
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.\" included in all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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.\" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
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.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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.\" OTHER DEALINGS IN THE SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall
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.\" not be used in advertising or otherwise to promote the sale, use or
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.\" other dealings in this Software without prior written authorization
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.\" from the X Consortium.
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.\"
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.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 XtSet-Sensitive XtIs-Sensitive 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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.de De
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.fi
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.de FD
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.LP
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.de IN \" send an index entry to the stderr
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.de C{
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.KS
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.D
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.\"
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.\" choose appropriate monospace font
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.\" the imagen conditional, 480,
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.\" may be changed to L if LB is too
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.\" heavy for your eyes...
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.\"
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.ie "\\*(.T"480" .ft L
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.el .ie "\\*(.T"300" .ft L
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.el .ie "\\*(.T"202" .ft PO
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.de C}
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.DE
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.R
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..
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.de Pn
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.ie t \\$1\fB\^\\$2\^\fR\\$3
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.el \\$1\fI\^\\$2\^\fP\\$3
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.de ZN
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.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
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. \" Note End -- doug kraft 3/85
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.ny0
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.TH XtSetSensitive __libmansuffix__ __xorgversion__ "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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.HP
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void XtSetSensitive(Widget \fIw\fP, Boolean \fIsensitive\fP);
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.HP
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Boolean XtIsSensitive(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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