Events for Visual Basic 6 COM interoperability > OnTracksBoardPlayHeadPositionChange event

Remarks

Occurs whenever the position of TracksBoard's play head line is changed.

This event replaces the usage of the CallbackTracksboardPlayHeadPos delegate and is only intended for usage with applications developed using Visual Basic 6 (which results unreliable when dealing with delegates and callbacks) and, in order to be enabled, requires a call to the COMEventEnable method with the nEventType parameter set to EVENT_TYPE_TRACKSB_PLAY_HEAD.

For further details about callback delegates see the How to synchronize the container application with the API tutorial.

For details about the use of the TracksBoard refer to the How to use the TracksBoard to visually compose songs tutorial.

For further details about methods of the TracksBoard refer to the TracksBoard class section.

Syntax

[Visual Basic]

EditorApi_OnTracksBoardPlayHeadPositionChange (

ByVal bPlayHeadAvailable as Boolean,

ByVal nPosInMs as Long

)

where "EditorApi" is declared in Visual Basic 6 code as:

Dim WithEvents EditorApi As AudioSoundEditorApi.AudioSoundEditorApiObj

Parameter

Description

bPlayHeadAvailable

Boolean value representing the flag for play head line availability.

Supported values are the following:

Value	Meaning
false	The play head line is hidden. In this case the value passed to the nPosInMs parameter can be ignored.
true	The play head line is visible and its position is passed to the nPosInMs parameter

nPosInMs

The current play head line position, expressed in milliseconds