IMediaPosition Object

Microsoft DirectShow 9.0

Note This topic is deprecated. It applies to Visual Basic 6.0. DirectShow is not supported for Visual Basic .NET or C#.

The IMediaPosition object contains methods for seeking the filter graph and setting the playback rate.

To use this object, declare a variable of type IMediaPosition and set it equal to the FilgraphManager object:

Dim mGraph As New FilgraphManager
Dim iPosition As ImediaEvent
Set iPosition = mGraph

Requirements

Include a reference in your project to "ActiveMovie control type library" (Quartz.dll).

The IMediaPosition object exposes the following properties and methods.

Property	Description
CurrentPosition	Sets or retrieves the playback position.
Duration	Retrieves the duration of the stream.
PrerollTime	Sets or retrieves the amount of data that will be queued before the start position.
Rate	Sets or retrieves the playback rate.
StopTime	Sets or retrieves the stop time.

Method	Description
CanSeekBackward	Queries whether the stream can be seeked backward.
CanSeekForward	Queries whether the stream can be seeked forward.

Recursos adicionales