Sub BufferLock( _
   ByVal _eLockType As eMFLockType, _
   ByRef _pcbMaxSize As Integer, _
   ByRef _pcbActualSize As Integer, _
   ByRef _plpData As Long _
) 

void BufferLock( 
   eMFLockType _eLockType,
   out int _pcbMaxSize,
   out int _pcbActualSize,
   out long _plpData
)

procedure BufferLock( 
    _eLockType: eMFLockType;
   Out  _pcbMaxSize: Integer;
   Out  _pcbActualSize: Integer;
   Out  _plpData: Int64
); 

void BufferLock( 
   eMFLockType _eLockType,
   [PARAMFLAG::Out] int _pcbMaxSize,
   [PARAMFLAG::Out] int _pcbActualSize,
   [PARAMFLAG::Out] long _plpData
) 

Parameters

_eLockType

lock type

_pcbMaxSize

maximal buffer size

_pcbActualSize

actual buffer size

_plpData

pointer to the buffer data

Reference

IMFBuffer Interface
IMFBuffer Members