MIDISendMessages Return Value - rc
rc
(
ULONG
) - returns
Returns 0 if the command is completed successfully.
MIDIERR_INTERNAL_SYSTEM
System problem or the RTMIDI timer is not started.
MIDIERR_INVALID_INSTANCE_NUMBER
Invalid instance number.
MIDIERR_INVALID_FLAG
The
ulFlag
value is not set to 0.
MIDIERR_INVALID_PARAMETER
The
paMessage
pointer is invalid.
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