BassMidiBASS_MIDI_StreamEvent Method (Int32, Int32, BASSMIDIEvent, Int32)

[DllImportAttribute("bassmidi")]
public static bool BASS_MIDI_StreamEvent(
	int handle,
	int chan,
	BASSMIDIEvent eventtype,
	int param
)

<DllImportAttribute("bassmidi">]
Public Shared Function BASS_MIDI_StreamEvent ( 
	handle As Integer,
	chan As Integer,
	eventtype As BASSMIDIEvent,
	param As Integer
) As Boolean

Parameters

handle

Type: SystemInt32
The MIDI stream to apply the event to (as returned by BASS_MIDI_StreamCreate(Int32, BASSFlag, Int32)).

chan

Type: SystemInt32
The MIDI channel to apply the event to... 0 = channel 1.

eventtype

Type: Un4seen.Bass.AddOn.MidiBASSMIDIEvent
The event to apply (see BASSMIDIEvent for details).

param

Type: SystemInt32
The event parameter (see BASSMIDIEvent for details).

Return Value

Apart from the "global" events, all events apply only to the specified MIDI channel.

Except for the "non-MIDI" events, events applied to a MIDI file stream can subsequently be overridden by events in the file itself, and will also be overridden when seeking or looping. That can be avoided by using additional channels, allocated via the BASS_ATTRIB_MIDI_CHANS attribute.

Event syncs (BASS_SYNC_MIDI_xxx, see BASSSync) are not triggered by this function. If sync triggering is wanted, BASS_MIDI_StreamEvents(Int32, BASSMIDIEventMode, BASS_MIDI_EVENT, Int32) can be used instead.

If the MIDI stream is being played (it's not a decoding channel), then there will be some delay in the effect of the event being heard. This latency can be reduced by making use of the BASS_CONFIG_BUFFER and BASS_CONFIG_UPDATEPERIOD config options when creating the stream.

If multiple events need to be applied at the same time, BASS_MIDI_StreamEvents(Int32, BASSMIDIEventMode, BASS_MIDI_EVENT, Int32) can be used instead of this function.

// press the key
BassMidi.BASS_MIDI_StreamEvent(handle, 0, BASSMIDIEvent.MIDI_EVENT_NOTE, 60, 100);
// wait 2 seconds
Thread.Sleep(2000);
// release the key
BassMidi.BASS_MIDI_StreamEvent(handle, 0, BASSMIDIEvent.MIDI_EVENT_NOTE, 60);

' press the key
BassMidi.BASS_MIDI_StreamEvent(handle, 0, BASSMIDIEvent.MIDI_EVENT_NOTE, 60, 100)
' wait 2 seconds
Thread.Sleep(2000)
' release the key
BassMidi.BASS_MIDI_StreamEvent(handle, 0, BASSMIDIEvent.MIDI_EVENT_NOTE, 60)

Reference