A value representing the width, in pixels, of the Tool's caption. If -1 (default), the width of the caption is automatically adjusted according to the value of the Xceed.SmartUI.SmartItem.Text property.
Requirements
Target Platforms: 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