MWAPI - LEFTSHOW

Draft MDC Standard

LEFTSHOW specifies which non-header column is displayed left most in the scrolling region of a table gadget. If the user scrolls the columns, the value of LEFTSHOW changes.

If the application assigns a value to LEFTSHOW, the non-header columns may scroll.

If the value assigned to LEFTSHOW exactly matches a citem subscript specified for a non-header column, the column identified by that subscript is displayed left most in the scrolling region.

If the application assigns a value to LEFTSHOW which does not exactly match a citem subscript specified for a non-header column, the first non-header column identified by a citem subscript that follows (in the collation sequence of ^$WINDOW) the specified LEFTSHOW value is displayed left most in the scrolling region. LEFTSHOW is then set to the subscript value of that non-header column.

If the application assigns a value to LEFTSHOW which does not exactly match a citem subscript specified for a non-header column, and which is not followed (in the collation sequence of ^$WINDOW) by any citem subscript specified for the gadget, the columns scroll (if necessary) so that the last column in the table is displayed in the visible area. LEFTSHOW is then set to the citem displayed left most in the scrolling region.

If the aggregate width of the columns is at least great enough to fill the scrolling region and the value assigned to LEFTSHOW would cause the scrolling region to be only partially filled, the underlying windowing platform or the MWAPI implementation may scroll the list to fill the scrolling region. LEFTSHOW is then set to the citem value for the column displayed left most in the scrolling region.