Microsoft DirectX 9.0 SDK Update (October 2004)

EffectsEcho.LeftDelay Property

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Note: This documentation is preliminary and is subject to change.
How Do I...?

Retrieves and sets the delay for left channel, in milliseconds, in the EffectsEcho structure.

Definition

Visual Basic .NET Public Property LeftDelay As Single
C# public float LeftDelay { get; set; }
Managed C++ public: __property float get_LeftDelay();
public: __property void set_LeftDelay(float);
JScript .NET public function get LeftDelay() : float
public function set LeftDelay(float);

Property Value

System.Single . Delay for left channel, in milliseconds.

This property is read/write. 

Remarks

Can range from EchoEffect.LefttDelayMin to EchoEffect.LeftDelayMax.

The default value is 500 ms.

How Do I...?

Use Effect Parameters

This C# example demonstrates how to use the parameters of an effect object from a SecondaryBuffer object.

The buffer object in this code snippet is assumed to be the SecondaryBuffer from the code in Add Effects to a SecondaryBuffer Object.

              [C#]
              
//Retrieve the effects object and //the effect param sturctures and edit parameters. EchoEffect echo = (EchoEffect)buffer.GetEffects(0); EffectsEcho echo_params = echo.AllParameters; echo_params.LeftDelay = 250.0f; echo_params.RightDelay = 100.0f; echo_params.Feedback = 85.0f; echo_params.PanDelay = 1; echo_params.WetDryMix = 50.0f; ChorusEffect chorus = (ChorusEffect)buffer.GetEffects(1); EffectsChorus chorus_params = chorus.AllParameters; chorus_params.Delay = 15.0f; chorus_params.Depth = ChorusEffect.DepthMax; chorus_params.Phase = ChorusEffect.PhaseNegative90; chorus_params.Waveform = ChorusEffect.WaveSin; chorus_params.WetDryMix = 50.0f; //Set the new parameters and play the buffer. echo.AllParameters = echo_params; chorus.AllParameters = chorus_params; buffer.Play(0,BufferPlayFlags.Default);


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