lx_pix_to_column_c

	column.i4.v = lx_pix_to_column_c(pix_x.i4.v [,max_column.i4.r]
					 [,text_size.i4.v])

	This routine is converts an X coordinate on a graphics screen
	to a character cell column value.

	pix_x		x coordinate in pixels to be converted
	[max_column]	maximum number of columns possible
	[text_size]	text size to calculate for (default is current size)

	This function returns status values as follows:

	CBS_RANGE		pixel value is out of range
	otherwise		corresponding column value

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	lx_col_to_pix(_c), lx_pix_to_row_c, lx_row_to_pix(_c), lxprint(_c),
	wn_text(_c), lxblnk(_c), read_lx_format