WMENU-UNCHECK
The WMENU-UNCHECK function removes the check mark from a menu item.
Syntax:
 CALL "W$MENU" USING WMENU-UNCHECK 
                     menuHandle
                     ID
              GIVING returnCode
Parameters:
WMENU-UNCHECK
Constant
 
menuHandle
USAGE HANDLE
Specifies the handle of an existing menu.
ID
any numeric data item or numeric literal
Specifies the menu entry to be unchecked.
Return code:
returnCode can be any signed numeric data item and provides additional information:
<=0
Operation failed.
>0
Operation successful.