191 lines
3.8 KiB
Plaintext
191 lines
3.8 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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.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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.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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.ne 7
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. \" Note End -- doug kraft 3/85
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..
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.ny0
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.TH XtRealizeWidget 3Xt "Release 3" "X Version 11" "XT FUNCTIONS"
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.SH NAME
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XtRealizeWidget, XtIsRealized, XtUnrealizeWidget \- realize and unrealize widgets
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.SH SYNTAX
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void XtRealizeWidget(\fIw\fP)
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.br
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Widget \fIw\fP;
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.LP
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Boolean XtIsRealized(\fIw\fP)
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.br
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Widget \fIw\fP;
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.LP
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void XtUnrealizeWidget(\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 \fIw\fP 1i
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Specifies the widget.
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.SH DESCRIPTION
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If the widget is already realized,
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.ZN XtRealizeWidget
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simply returns.
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Otherwise, it performs the following:
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.IP \(bu 5
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Binds all action names in the widget's
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translation table to procedures (see Section 10.1.2).
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.IP \(bu 5
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Makes a post-order traversal of the widget tree rooted
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at the specified widget and calls the change_managed procedure
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of each composite widget that has one or more managed children.
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.IP \(bu 5
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Constructs an
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.ZN XSetWindowAttributes
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structure filled in with information derived from the
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.ZN Core
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widget fields and calls the realize procedure for the widget,
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which adds any widget-specific attributes and creates the X window.
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.IP \(bu 5
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If the widget is
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not a subclass of
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.ZN compositeWidgetClass ,
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.ZN XtRealizeWidget
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returns; otherwise, it continues and performs the following:
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.RS
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.IP \- 5
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Descends recursively to each of the widget's
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managed children and calls the realize procedures.
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Primitive widgets that instantiate children are responsible for realizing
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those children themselves.
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.IP \- 5
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Maps all of the managed children windows that have mapped_when_managed
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.ZN True .
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(If a widget is managed but mapped_when_managed is
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.ZN False ,
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the widget is allocated visual space but is not displayed.
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Some people seem to like this to indicate certain states.)
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.RE
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.LP
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If the widget is a top-level shell widget (that is, it has no parent), and
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mapped_when_managed is
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.ZN True ,
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.ZN XtRealizeWidget
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maps the widget window.
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.LP
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The
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.ZN XtIsRealized
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function returns
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.ZN True
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if the widget has been realized,
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that is, if the widget has a nonzero X window ID.
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.LP
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Some widget procedures (for example, set_values) might wish to
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operate differently
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after the widget has been realized.
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.LP
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The
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.ZN XtUnrealizeWidget
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function destroys the windows of an existing widget and all of its
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children (recursively down the widget tree).
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To recreate the windows at a later time,
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call
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.ZN XtRealizeWidget
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again.
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If the widget was managed,
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it will be unmanaged automatically before its window is freed.
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.SH "SEE ALSO"
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XtManageChildren(3Xt)
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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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