hpux man page for xclearwindow

XClearWindow()															    XClearWindow()

Name
  XClearWindow - clear an entire window.

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

Arguments
  display   Specifies a connection to an X server; returned from XOpenDisplay().

  w	    Specifies the ID of the window to be cleared.

Description
  XClearWindow()  clears  a  window,  but  does not cause exposure events.  This function is equivalent to XClearArea(display, w, 0, 0, 0, 0,
  False).

  If the window has a defined background tile or it is ParentRelative, the rectangle is tiled with a plane_mask of all 1's  and  function  of
  GXcopy.  If the window has background None, the contents of the window are not changed.

  For more information, see Volume One, Chapter 6, Drawing Graphics and Text.

Errors
  BadMatch  If w is an InputOnly class window.

  BadWindow

See Also
  XClearArea(),  XCopyArea(),  XCopyPlane(),  XDraw,  XDrawArc(), XDrawArcs(), XDrawFilled(), XDrawLine(), XDrawLines(), XDrawPoint(), XDraw-
  Points(), XDrawRectangle(), XDrawRectangles(), XDrawSegments(), XFillArc(),  XFillArcs(),  XFillPolygon(),  XFillRectangle(),  XFillRectan-
  gles().

Xlib - Drawing Primitives													    XClearWindow()