Returns a reference to a specified interface if the object supports that interface.Delphi syntax:type HResult = Longint; function QueryInterface(const IID: TGUID; out Obj): HResult; stdcall;DescriptionQueryInterface checks whether the object that implements this interface supports the interface specified by IID. If so, QueryInterfaceincrements the reference count. sets the Obj parameter so that it points to an instance of the specified interface. returns 0 to indicate success.If the object does not support the interface, QueryInterface returns a nonzero error code such as E_NoInterface.------------------------------------------------------- 帮助都有
function QueryInterface(const IID: TGUID; out Obj): HResult; stdcall;DescriptionQueryInterface checks whether the object that implements this interface supports the interface specified by IID. If so, QueryInterfaceincrements the reference count.
sets the Obj parameter so that it points to an instance of the specified interface.
returns 0 to indicate success.If the object does not support the interface, QueryInterface returns a nonzero error code such as E_NoInterface.-------------------------------------------------------
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