The MIDI_HEADER type exposes the following members.
The MIDI data buffer.
Gets the flags giving information about the buffer (see MIDIHeader for more information).
Gets the pointer to the prepared MIDIHDR structure (or Zero if the header was not prepared).
Indicates if the device driver is finished with the buffer and is returning it to the application.
Indicates if the buffer has been prepared by using the Prepare(Boolean, IntPtr) method.
Indicates if the buffer is a stream buffer.
Custom user data.