Visual Circuits H-DVP, User Manual

Page: 80 / 89

Appendix
70
Parameters
* pcbfptr
A pointer to the address of the function to receive the
callback messages.
CardNum
0 based index of the card in the system.
ChanNum
0 based index of the channel on the card.
Visual Basic Call
PSJ&DOOEDFN)XQFWLRQ$GGUHVVRI &DOOEDFN)XQFWLRQ
Remarks
To use this function properly, you must first declare a function in
your code like this:
YRLG&DOOEDFN)XQFWLRQLQW&DUG1XPLQW&KLS1XP
LQW0HVVDJH
Then call mpgCallbackFunction with the address of the function
you just declared as the argument. When a message is sent back to
your CallbackFunction function, Message will contain one of the
messages defined above.
To stop callback messages from being sent, call
mpgCallbackFunction(NULL)