The CaptionInactive property is used to determine the caption that is displayed within the caption area of the ribbon when the form containing the ribbon is not active. By default, when this property and the Caption are set to null, which is their default value, and the FormDisplayStyle is such that the standard form caption is not displayed, this will resolve to using the Text property of the Form.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2