CanRead
CanWrite
GetIndex
GetLength
HasContext
Read
Reset
SetLength
Skip
Write
Write
virtual FDO_API_COMMON FdoSize FdoIoStream::Read | ( | FdoByte * | buffer,
|  | FdoSize | count |
| ) |  |  | `[pure virtual]`
  reads the number of bytes indicated by count into the given buffer, or the number of bytes after the current stream position, whichever is less. The stream’s current position is moved ahead by the number of bytes read. Parameters:
  | buffer | Output read into this buffer
  | count | Input read this number of bytes into the buffer. The caller is responsible for allocating a buffer that is large enough to hold the bytes.
Returns: Returns the number of bytes that were read. 0 if already at the end of the stream. Implemented in FdoIoFileStream, and FdoIoMemoryStream.