Pointer to a buffer that represents the preamble to set.
Value that represents the offset from the beginning of the buffer, from which this method should copy data.
Value that represents the length of the preamble, in bytes. The maximum length is 128 bytes.
The standard length of the Preamble is 128 bytes. If the value specified in length is > 128, then the Preamble will be set with the first 128 bytes of preamble. If length is < or equal 128, then the Preamble will be set with the entire contents of preamble.
To retrieve the contents of the Preamble, call the GetPreamble method.
For an example, refer to SetIntValue.