window_tvdisp(_c)

	window_tvdisp(window_id.i2.r, row.i4.r, column.i4.r, vun.i2.r,
		      record_number.i4.r, status.i2.r)

	window_tvdisp_c(window_id.i2.v, row.i4.v, column.i4.v, vun.i2.v,
			record_number.i4.v, status.i2.r)

	This routine will read a compressed TV image from a filesharing record,
	expand it, and display it to a rectangular area on the color TV 
	display.  A compressed image can be gotten into a Filesharing record 
	using the Screen Image Editor (Page D10) or through a call to
	window_tvsave_c.

	window_id	window ID (use WMNGR_BACKGROUND for background window)
	row, column	upper left hand corner of image display region
	vun		virtual unit number of the Filesharing file which 
			contains the compressed image.  The calling program
			must have previously opened this file.  A small
			speed advantage can be had on display if the file
			has relative organization and variable length records.
	record_number	record number of the record containing the compressed
			image to display
	status		error status as follows:
			(OK -> success,
			 CBS_NO_WINDOW -> window does not exist,
			 CBS_INVARG -> parameter error (arguments out of range),
			 CBS_INVTYP -> invalid compressed image,
			 CBS_INVSIZ -> invalid image size (number of rows
				       or cols),
			 CBS_CORRUPT -> inconsistant compressed image,
			 FSHARE_xxx -> error reading image)

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	window_tvsave_c, window_tvmx(_c), chkcmp

	C/C++ usage:

	static const char	file_name[] = "filename.txt";
	short	vun;
	short	status;
	short	window_id;
	int	open_status;
	int	access_mode = FMNGR_DIRECT;
	int	write_access = FMNGR_READ_ACCESS;
	int	retry = TRUE;
	int	ext_status;
	int	asynchronous = FALSE;
	int	max_record = FSHR_DEFAULT_MAX_RECORD;
	int	row = 1;
	int	column = 1;
	int	record_number = 1;

	open_status = fm_open_c(&vun,file_name,access_mode,write_access,
				retry,&ext_status,asynchronous,max_record);

	if (open_status == OK)
	window_tvdisp_c(window_id,row,column,vun,record_number,&status);