'宣言 Protected Overridable Function GetIsOffscreen( _ ByRef isOffScreen As Boolean _ ) As Boolean
protected virtual bool GetIsOffscreen( out bool isOffScreen )
RibbonCaptionUIElement.RibbonCaptionUIElementUiaProviderStub クラス RibbonCaptionUIElement.RibbonCaptionUIElementUiaProviderStub メンバ