RAD Studio VCL Reference
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TOleServer.QueryInterface Method
TOleServer Class | TOleServer Members | OleServer Namespace | Description | See Also
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Returns a reference to a specified interface if the OLE server supports that interface.

Pascal
function QueryInterface(const IID: TGUID; out Obj): HResult; override;
C++
virtual __fastcall HRESULT QueryInterface(const TGUID IID,  Obj);
Description

QueryInterface implements the IUnknown interface method QueryInterface. QueryInterface returns a reference to the interface specified by the IID parameter as the Obj parameter. If the OLE server does not support the interface, the Obj parameter returns nil NULL and QueryInterface returns a nonzero error code. 

 

See Also
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