IWMEncSourceGroup2.GetAutoRollover

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The GetAutoRollover method retrieves the name of the source group that the current source group will roll over to automatically.

Syntax

string IWMEncSourceGroup2.GetAutoRollover(
  out object  pvar
);

Parameters

pvar

[out]  Object indicating whether to roll over automatically. A value of 0 indicates no auto rollover; -1 indicates an automatic rollover at the end of the source group.

Return Values

This method returns a String specifying the source group name, and an Object indicating whether to roll over automatically.

Remarks

An empty string indicates that automatic rollover is not set.

Example Code

using WMEncoderLib;

try
{
// Create a WMEncoder object.
  WMEncoder Encoder;
  Encoder = new WMEncoder();

// Create an IWMEncSourceGroupCollection object.
  IWMEncSourceGroupCollection SrcGrpColl;
  SrcGrpColl = Encoder.SourceGroupCollection;

// Add an IWMEncSourceGroup object to the collection and add an
// audio source to it.
  IWMEncSourceGroup2 SrcGrp1;
  IWMEncSource SrcAud1;
  SrcGrp1 = (IWMEncSourceGroup2)SrcGrpColl.Add("SG_1");
  SrcAud1 = SrcGrp1.AddSource(WMENC_SOURCE_TYPE.WMENC_AUDIO);
  SrcAud1.SetInput("C:\\audio1.avi", "", "");

// Add a second IWMEncSourceGroup object to the collection and add an
// audio source to it.
  IWMEncSourceGroup2 SrcGrp2;
  IWMEncSource SrcAud2;
  SrcGrp2 = (IWMEncSourceGroup2)SrcGrpColl.Add("SG_2");
  SrcAud2 = SrcGrp2.AddSource(WMENC_SOURCE_TYPE.WMENC_AUDIO);
  SrcAud2.SetInput("Default_Audio_Device", "Device", "");

// Set SG_1 to roll over to SG_2 when the end of the file is reached.
  SrcGrp1.SetAutoRollover(-1, "SG_2");

// Retrieve the rollover settings for both source groups.
  string sRollTo1;
  object vRollTime1;
  string sRollTo2;
  object vRollTime2;
  sRollTo1 = SrcGrp1.GetAutoRollover(out vRollTime1);
  sRollTo2 = SrcGrp2.GetAutoRollover(out vRollTime2);
}

catch (Exception e)
{
     // TODO: Handle exceptions.
}

Requirements

Reference: Windows Media Encoder

Namespace: WMEncoderLib

Assembly: Interop.WMEncoderLib.dll

Library: WMEncoderLib.dll

See Also