234 lines
5.0 KiB
Plaintext
234 lines
5.0 KiB
Plaintext
.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit 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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.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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.ny0
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.TH XClearArea 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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XClearArea, XClearWindow \- clear area or window
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.SH SYNTAX
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.\" $Header: XClearArea.f,v 1.1 88/02/26 09:58:46 mento Exp $
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XClearArea\^(\^\fIdisplay\fP, \fIw\fP\^, \fIx\fP\^, \fIy\fP\^, \fIwidth\fP\^, \fIheight\fP\^, \fIexposures\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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Window \fIw\fP\^;
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.br
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int \fIx\fP\^, \fIy\fP\^;
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.br
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unsigned int \fIwidth\fP\^, \fIheight\fP\^;
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.br
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Bool \fIexposures\fP\^;
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.LP
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.\" $Header: XClear.f,v 1.1 88/02/26 09:58:45 mento Exp $
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XClearWindow\^(\^\fIdisplay\fP, \fIw\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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Window \fIw\fP\^;
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.SH ARGUMENTS
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.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.\" $Header: exposures.a,v 1.2 88/05/13 07:34:33 mento Exp $
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.IP \fIexposures\fP 1i
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Specifies a Boolean value that indicates if
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.ZN Expose
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events are to be generated.
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.\" $Header: w.a,v 1.2 88/05/07 11:35:31 mento Exp $
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.IP \fIw\fP 1i
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Specifies the window.
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.ds Wh , which are the dimensions of the rectangle
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.\" $Header: w+h_gen.a,v 1.2 88/08/04 11:21:28 mento Exp $
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.IP \fIwidth\fP 1i
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.br
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.ns
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.IP \fIheight\fP 1i
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Specify the width and height\*(Wh.
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.ds Xy , which are relative to the origin of the window \
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and specify the upper-left corner of the rectangle
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.\" $Header: xy_gen.a,v 1.2 88/08/04 11:22:37 mento Exp $
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.IP \fIx\fP 1i
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.br
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.ns
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.IP \fIy\fP 1i
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Specify the x and y coordinates\*(Xy.
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.SH DESCRIPTION
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.\" $Header: XClearArea.d,v 1.3 88/08/18 08:25:30 mento Exp $
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The
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.ZN XClearArea
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function paints a rectangular area in the specified window according to the
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specified dimensions with the window's background pixel or pixmap.
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The subwindow-mode effectively is
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.ZN ClipByChildren .
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If width is zero, it
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is replaced with the current width of the window minus x.
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If height is
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zero, it is replaced with the current height of the window minus y.
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If the window has a defined background tile,
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the rectangle clipped by any children is filled with this tile.
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If the window has
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background
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.ZN None ,
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the contents of the window are not changed.
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In either
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case, if exposures is
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.ZN True ,
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one or more
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.ZN Expose
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events are generated for regions of the rectangle that are either visible or are
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being retained in a backing store.
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If you specify a window whose class is
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.ZN InputOnly ,
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a
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.ZN BadMatch
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error results.
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.LP
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.ZN XClearArea
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can generate
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.ZN BadMatch ,
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.ZN BadValue ,
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and
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.ZN BadWindow
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errors.
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.LP
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.\" $Header: XClear.d,v 1.2 88/06/11 07:49:21 mento Exp $
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The
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.ZN XClearWindow
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function clears the entire area in the specified window and is
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equivalent to
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.ZN XClearArea
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(display, w, 0, 0, 0, 0,
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.ZN False ).
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If the window has a defined background tile, the rectangle is tiled with a
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plane-mask of all ones and
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.ZN GXcopy
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function.
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If the window has
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background
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.ZN None ,
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the contents of the window are not changed.
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If you specify a window whose class is
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.ZN InputOnly ,
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a
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.ZN BadMatch
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error results.
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.LP
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.ZN XClearWindow
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can generate
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.ZN BadMatch
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and
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.ZN BadWindow
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errors.
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.SH DIAGNOSTICS
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.\" $Header: badmatch1.e,v 1.3 87/09/09 18:18:54 mento Exp $
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.TP 1i
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.ZN BadMatch
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An
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.ZN InputOnly
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window is used as a Drawable.
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.\" $Header: badvalue.e,v 1.1 87/09/04 08:23:19 mento Exp $
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.TP 1i
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.ZN BadValue
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Some numeric value falls outside the range of values accepted by the request.
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Unless a specific range is specified for an argument, the full range defined
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by the argument's type is accepted. Any argument defined as a set of
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alternatives can generate this error.
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.\" $Header: badwindow.e,v 1.1 87/09/04 08:23:20 mento Exp $
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.TP 1i
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.ZN BadWindow
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A value for a Window argument does not name a defined Window.
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.SH "SEE ALSO"
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XCopyArea(3X11)
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.br
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\fI\*(xL\fP
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