RevMedia

The default "Press any key to continue" type message now automatically includes an "OK" button which may be operated with the mouse. Other message types which may be used are as follows

Message Type  Description

BO            Displays text with a normal "OK" button. Returns the key
              pressed to OK (including cursor keys and the Escape key).
              If clicked with the mouse returns a 1.

BOC           Displays text with an OK button and a Cancel button. Returns a
              1 if "Yes" clicked and (somewhat inconsistently) a 0 (rather
              than a null) if Cancel is chosen.

BNY           Used like an R message but prompts with "Yes No" buttons.
             "Yes" returns 1, "No" returns 0

BNYC          Used like an R message but prompts with "Yes No Cancel"
              buttons. "Yes" returns 1, "No" returns 0 and "Cancel" returns
              null. NB although it would seem logical to call this BYNC
              message type to reflect the prompting order this is not the
              case. This is doubtless unconnected to the Park Avenue, NYC
              origin of portions of this code.

BLabel{,Label2,Label3}
              Functionally equivalent to the BNYC message type but any user
              defined text can be used in place of Yes/No/Cancel. Returns 1
              for first choice, 0 for second and null for third.