RAD Studio VCL Reference
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Implements the QueryInterface method of the IUnknown interface.
function ObjQueryInterface(const IID: TGUID; out Obj): HResult; virtual; stdcall;
virtual __fastcall __stdcall HRESULT ObjQueryInterface(const TGUID IID, Obj);
QueryInterface queries whether the COM object supports a given interface specified by the IID parameter. QueryInterface is used as the implementation of the IUnknown QueryInterface method when the COM object (TComObject) is not part of an aggregate.
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