XClearArea(3)

NAME

       XClearArea, XClearWindow - clear area or window

SYNTAX

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

       int XClearWindow(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 relative 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 win-
       dow according to the specified dimensions with the window's background
       pixel or pixmap.  The subwindow-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 win-
       dow and is equivalent to XClearArea (display, w, 0, 0, 0, 0, False).
       If the window has a defined background tile, the rectangle is tiled
       with a plane-mask of all ones and GXcopy function.  If the window has
       background None, the contents of the window are not changed.  If you
       specify a window whose class is InputOnly, a BadMatch 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 specific 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                     libX11 1.1.1                    XClearArea(3)