Screen-value Mode (-scrvalmode)

Use Screen-value Mode (-scrvalmode) to specify the mode in which the SCREEN-VALUE attribute indicates that the selected item in a combo-box item list is empty.

Operating system and syntax	Windows	-scrvalmode n
Use with	Maximum value	Minimum value	Single-user default	Multi-user default
Client Session	—	—	0	0

The screen-value mode. Valid modes are:

1 — If the selected item in the combo-box list is empty, the SCREEN-VALUE attribute for the combo-box returns the empty string (""). Note that if no item in the combo-box list is selected, the SCREEN-VALUE attribute returns the Unknown value (?). In either case, the INPUT-VALUE attribute returns the empty string ("").

3 — The same as mode 1, with the following exception: if the SCREEN-VALUE attribute for the combo-box returns the Unknown value (?), the INPUT-VALUE attribute also returns the Unknown value (?).

Prior to OpenEdge R10.0, the SCREEN-VALUE attribute for a combo-box returns the empty string ("") if the selected item in the list is empty. Starting with Release 10.0, the SCREEN-VALUE attribute for a combo-box returns the Unknown value (?) if the selected item in the list is empty. In either case, if no item in the combo-box list is selected, the SCREEN-VALUE attribute returns the Unknown value (?).

This startup parameter does not apply to combo-box browse columns.