MIDIEnableInstance - Parameters

minstance (MINSTANCE) - input

The instance to be enabled.

ulFlag (ULONG) - input

Flag indicating the hardware node should be enabled for sending or receiving messages. Valid values are MIDI_ENABLE_SEND and MIDI_ENABLE_RECEIVE.

rc (ULONG) - returns

Returns 0 if the command is completed successfully.

MIDIERR_HARDWARE_FAILED

The enable or open attempt failed due to a hardware problem.
MIDIERR_INTERNAL_SYSTEM
System problem.
MIDIERR_INVALID_FLAG
The ulFlag value is invalid.
MIDIERR_INVALID_INSTANCE_NUMBER
The instance number (minstance) is invalid.
MIDIERR_NOT_ALLOWED
Both send and receive are not permitted for this particular instance.
MIDIERR_RECEIVEONLY
An attempt was made to enable an instance for send (or for send and receive) when the instance supports receive only.
MIDIERR_RESOURCE_NOT_AVAILABLE
The enable or open attempt failed due to a system resource not being available.
MIDIERR_SENDONLY
An attempt was made to enable an instance for receive (or for send and receive) when the instance supports send only.

---

[Back: MIDIEnableInstance Return Value - rc]
[Next: MIDIEnableInstance - Remarks]