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    IUnknown

    Basic interface for all COM-based interfaces.

    Declaration

    Source position: objpash.inc line 340

    type

  IUnknown = interface
  ['{00000000-0000-0000-C000-000000000046}']
    function QueryInterface : LongInt; cdecl;
    function _AddRef : LongInt; cdecl;
    function _Release : LongInt; cdecl;
  end;

    Inheritance

    Description

    IUnknown is defined by windows. It's the basic interface which all COM objects must implement. The definition does not contain any code.

    Methods

    Member Visibility Description
    QueryInterface default Return pointer to VMT table of interface.
    _AddRef default Increase reference count of the interface.
    _Release default Decrease reference count of the interface.

    See also

    Name Description
    IInterface Basic interface for all COM based interfaces.
    IDispatch Dispatch interface.
    IInvokable Interface with RTTI associated with it.