XClearWindow man page on BSDOS

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XClearArea(3X11)	  XLIB FUNCTIONS	 XClearArea(3X11)

NAME
       XClearArea, XClearWindow - clear area or window

SYNTAX
       XClearArea(display, w, x, y, width, height, exposures)
	     Display *display;
	     Window w;
	     int x, y;
	     unsigned int width, height;
	     Bool exposures;

       XClearWindow(display, w)
	     Display *display;
	     Window w;

ARGUMENTS
       display	Specifies the connection to the X server.

       exposures Specifies a Boolean value that indicates if
		 Expose events are to be generated.

       w	 Specifies the window.

       width
       height	Specify the width and height, which are the
		 dimensions of the rectangle.

       x
       y	 Specify the x and y coordinates, which are rela-
		 tive to the origin of the window and specify the
		 upper-left corner of the rectangle.

DESCRIPTION
       The XClearArea function paints a rectangular area in the
       specified window according to the specified dimensions
       with the window's background pixel or pixmap.  The subwin-
       dow-mode effectively is ClipByChildren.	If width is zero,
       it is replaced with the current width of the window minus
       x.  If height is zero, it is replaced with the current
       height of the window minus y.  If the window has a defined
       background tile, the rectangle clipped by any children is
       filled with this tile.  If the window has background None,
       the contents of the window are not changed.  In either
       case, if exposures is True, one or more Expose events are
       generated for regions of the rectangle that are either
       visible or are being retained in a backing store.  If you
       specify a window whose class is InputOnly, a BadMatch
       error results.

       XClearArea can generate BadMatch, BadValue, and BadWindow
       errors.

       The XClearWindow function clears the entire area in the
       specified window and is equivalent to XClearArea (display,

X Version 11		Release 6.4				1

XClearArea(3X11)	  XLIB FUNCTIONS	 XClearArea(3X11)

       w, 0, 0, 0, 0, False).  If the window has a defined back-
       ground tile, the rectangle is tiled with a plane-mask of
       all ones and GXcopy function.  If the window has back-
       ground None, the contents of the window are not changed.
       If you specify a window whose class is InputOnly, a Bad-
       Match error results.

       XClearWindow can generate BadMatch and BadWindow errors.

DIAGNOSTICS
       BadMatch An InputOnly window is used as a Drawable.

       BadValue Some numeric value falls outside the range of
		 values accepted by the request.  Unless a spe-
		 cific range is specified for an argument, the
		 full range defined by the argument's type is
		 accepted.  Any argument defined as a set of
		 alternatives can generate this error.

       BadWindow A value for a Window argument does not name a
		 defined Window.

SEE ALSO
       XCopyArea(3X11)
       Xlib - C Language X Interface

X Version 11		Release 6.4				2

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