InitializeTransform method

Initializes a transform that has been created by the caller.

Syntax

HRESULT retVal = object.InitializeTransform(pTransform, punkInputs, ulNumInputs, punkOutputs, ulNumOutputs, pInitProps, pErrLog);

Parameters

• pTransform [in]
  Type: IDXTransform

  Pointer to the transform to initialize.

• punkInputs [in]
  Type: IUnknown

  Address of a pointer to an array of input data object interfaces that will be used by the transform. Specify NULL if the transform does not use any inputs.

• ulNumInputs [in]
  Type: unsigned long

  Number of data objects referred to by the punkInputs parameter.

• punkOutputs [in]
  Type: IUnknown

  Address of a pointer to an array of output data object interfaces that will be used by the transform. Can be NULL.

• ulNumOutputs [in]
  Type: unsigned long

  Number of data objects referred to by the punkOutputs parameter.

• pInitProps [in]
  Type: IPropertyBag

  Pointer to an optional property bag used to initialize the transform. Can be NULL.

• pErrLog [in]
  Type: IErrorLog

  Pointer to an optional error log object used during property persistence. Can be NULL.

Remarks

This method is used to properly initialize a transform that was created by a user. It uses the IDXTransform::Setup method to define the input and output data objects used in the transform.