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IOleInPlaceUIWindow : public IOleWindow
typedef interface IOleInPlaceUIWindow IOleInPlaceUIWindow;


Type Visibility Source Unit Parent
class public oleidl.h System System


Is a special base interface.

System.IOleInPlaceUIWindow inherits from System.IUnknown. All content below this line refers to System.IUnknown.

Is a special base interface.

IUnknown is a base interface with features that are important to C++ programmers and also programmers who utilize COM objects.

Note: In Object Pascal code, IUnknown is simply another name for IInterface. Descending from IUnknown instead of IInterface informs the Object Pascal compiler that the interface must be compatible with COM objects. Cross-platform applications can use interfaces descended from IUnknown, but must not use them to access COM objects, which are only available under Windows.

See Also