Specifies the visual state of an option button (also known as a radio button) that is drawn with visual styles.
The System.Windows.Forms.VisualStyles.RadioButtonState values correspond to the states of the System.Windows.Forms.VisualStyles.VisualStyleElement objects exposed by the System.Windows.Forms.VisualStyles.VisualStyleElement.Button.RadioButton class. The System.Windows.Forms.VisualStyles.RadioButtonState values are also used as an argument in the erload:System.Windows.Forms.RadioButtonRenderer.DrawRadioButton method.