# IPersistStream::GetSizeMax

Returns the size in bytes of the stream needed to save the object.

HRESULT GetSizeMax(

ULARGE_INTEGER *pcbSize | //Pointer to size of stream needed to save object
); |

Parameter

pcbSize
  [out]Points to a 64-bit unsigned integer value indicating the size in bytes of the stream needed to save this object.

Return Value

S_OK
  The size was successfully returned.

Remarks

This method returns the size needed to save an object. You can call this method to determine the size and set the necessary buffers before calling the IPersistStream::Save method.

#### Notes to Implementers

The GetSizeMax implementation should return a conservative estimate of the necessary size because the caller might call the IPersistStream::Save method with a non-growable stream.

See Also

IPersistStream::Save