8.9.2 Checking Menu Items

To place or remove a check mark from a menu item, use the WMENU-CHECK or WMENU-UNCHECK operation code. Follow this by the menu's handle and the ID of the item you want to modify.

For example, to place a check mark beside the menu item "10", use the following code:

CALL "W$MENU" USING WMENU-CHECK,
 MENU-HANDLE, 10

Placing check marks on top level menu items has no effect.