IPipeDouble::Pull method (objidlbase.h)

Retrieves data of the double type from the pipe source.

Syntax

HRESULT Pull(
  [out] DOUBLE *buf,
  [in]  ULONG  cRequest,
  [out] ULONG  *pcReturned
);

Parameters

[out] buf

A pointer to the memory buffer that receives the data. The buffer must be able to hold at least the number of doubles specified in cRequest.

[in] cRequest

The number of doubles requested.

[out] pcReturned

The actual number of doubles returned.

Return value

This method returns S_OK to indicate that the data was retrieved successfully.

Remarks

When the Pull method is called, data is requested from the provider of the pipe. The caller must provide a buffer that will hold at least the number of doubles specified in the cRequest parameter. The proxy will unmarshal the data into the provided buffer and set the number of doubles actually provided in pcReturned. The pcReturned parameter can be less than or equal to cRequest, but it will never be greater. When pcReturned is 0, it indicates that there is no more data.

Requirements

See also

IPipeDouble