Hi Sally,
CVICALLBACK is definend in <CVI>\include\cvidef.h, and it's basically just __cdecl. Here's some information from the CVI help:
"The CVICALLBACK macro should precede the function name in the
declarations and function headers for all user interface callbacks. This ensures
that the functions are treated by the compiler as cdecl, even when the default
calling convention is stdcall. CVICALLBACK is defined in cvidefs.h, which is
included by userint.h. The CVICALLBACK macro is included where necessary in the
header files generated by the User Interface Editor and in source code generated
by CodeBuilder."
Hope this helps.
Regards,
Message Edited by _Belle on 07-26-2007 10:32 AM
Ebele O.
National Instruments
