MIM_DATA

The MIM_DATA callback message notifies a client that a user-mode driver has received a MIDI short message.

Parameters

dwMsg

MIM_DATA

dwParam1

MIDI short message contents (one to three bytes).

dwParam2

Time stamp. Number of milliseconds since MIDM_START was received.

Comments

A user-mode MIDI input driver sends a MIM_DATA message to its client, by means of a callback, when the driver has received a MIDI short message. The driver sends the message to the client by calling DriverCallback, passing the specified parameters.

The driver sends the MIM_DATA message only if the client has previously specified a notification target with a MIDM_OPEN message.

If the driver detects that the message is invalid, it should send MIM_ERROR instead of MIM_DATA.

Win32 SDK documentation states that clients receive an MM_MIM_DATA message if the notification target is a window handle. MIM_DATA and MM_MIM_DATA are equivalent.

For additional information, see Notifying Clients from Audio Drivers and Transferring MIDI Input Data.