wn_set_background_size_c

	status.i4.v = wn_set_background_size_c(height.i4.v, width.i4.v)

	This routine allows the calling program to resize the background
	graphics window.  It also resets the color graphics context,
	clears the window, and disables the cursor.

	height		height of the background window in pixels
			(default is WN_DEFAULT_BKGD_HEIGHT)
	width		width of the background window in pixels
			(default is WN_DEFAULT_BKGD_WIDTH)

	This function returns ACNET status values as follows:

	OK			success
	CBS_INVARG		invalid dimension value

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	wn_read_background_size, wn_set_background_format_c, wn_screen_init(_c),
	intro_graphics_windows

	C/C++ usage:

	int	status;
	int	height = WN_DEFAULT_BKGD_HEIGHT;
	int	width = WN_DEFAULT_BKGD_WIDTH;

	status = wn_set_background_size_c(height,width);