Assembly: Bass.Net (in Bass.Net.dll) Version: 18.104.22.168
Property ValueType: IntPtr
In order to use the MIDI_HEADER with a Midi function (e.g. MIDI_InAddBuffer(IntPtr, IntPtr) or MIDI_OutLongMsg(IntPtr, IntPtr)) you must first call the Prepare(Boolean, IntPtr) method which provides this member.
Make sure, that you always call Unprepare(Boolean, IntPtr) once you prepared the header with the Prepare(Boolean, IntPtr) method and received back the header from the Midi device in order to release all unmanaged recourses!