Declaring Messages

You declare messages using the DECLARE_MESSAGE and LONG_MESSAGE macros to specify the message text and identfiers, and by using the VxD_IMESSAGE_SEG, VxD_PMESSAGE_SEG, and VXD_MESSAGE_SEG macros to specify which data segment receives the message data. The following example shows how to declare messages for a VxD:

; Message table for initialization data segment

VxD_IMESSAGE_SEG
    DECLARE_MESSAGE <MSG_BootErrorMsg>, \
        <"Error interrupt conflict, please reinstall">
VxD_IMESSAGE_ENDS

; Messages table for locked data segment

VxD_MESSAGE_SEG
    DECLARE_MESSAGE <MSG_DiskPlease>, \
        <"Please reinsert the original disk.">
    DECLARE_MESSAGE <MSG_CantOpen>, \
        <'Error: Can't open file "%0s" on drive "%1s".'>
    ; A long message 
    LONG_MESSAGE_START <MSG_MyLongMessage>
        LONG_MESSAGE <"Messages too long to fit on one line ">
        LONG_MESSAGE <"can be divided among several lines.", 10, 13>
        LONG_MESSAGE <"You can include control characters, such as ">
        LONG_MESSAGE <"new line and carriage return", 10, 13>
    LONG_MESSAGE_END
VxD_MESSAGE_ENDS

This example declares four messages. The MSG_BootErrorMsg, MSG_DiskPlease, and MSG_MyLongMessage messages are static messages. The MS_CantOpen message contains two parameter placeholders. The message macros automatically append a terminating null byte. Not illustrated is a pageable message segment, which uses the PMESSAGE type.

See also DECLARE_MESSAGE, LONG_MESSAGE, VXD_IMESSAGE_SEG, VXD_MESSAGE_SEG