Slider Select the Slider. part to add a portable control that represents a range of values that a user can select using multiple scales. You can set Slider features, such as minimum and maximum values and define detents and ticks to divide the scales top to bottom). Part: Slider Category: Buttons Class Name: AbtSliderView To display the pop-up menu for the part, click with mouse button 2 on the part. To further define the appearance and function of a part, double-click on it to open the properties window. On UNIX, "X Error: BadWindow" message appears in the console window when displaying the Slider part.