The System.Windows.Forms.VisualStyles.ToolBarState values correspond to the states of the System.Windows.Forms.VisualStyles.VisualStyleElement objects exposed by the System.Windows.Forms.VisualStyles.VisualStyleElement.ToolBar.Button, System.Windows.Forms.VisualStyles.VisualStyleElement.ToolBar.DropDownButton, System.Windows.Forms.VisualStyles.VisualStyleElement.ToolBar.SplitButton, and System.Windows.Forms.VisualStyles.VisualStyleElement.ToolBar.SplitButtonDropDown classes.