Sliders are much like Gauges, except they also allow for interaction by the user (rather than just showing a level).

To implement a slider in guiDesigner:

1. Select the slider icon on the tool bar.
2. Then draw a box roughly the size of the slider you wish to use. This size can be edited later on.
   
3. You will then need to add a theme to the slider. To do this, select a slider theme from the Theme Library and drag it onto the slider you just added.

You can also drag a slider theme directly from the Theme Manager or Theme Library onto an empty spot on an open page, and the slider will be automatically created at the drop point and assigned the theme you dragged.

Whats the difference between a gauge and a slider?
Good question! A gauge takes a reading from a device/system, and displays the level as a visualisation. A slider is a control that the user can manipulate to change the level of the device/system.

To access the slider properties, right click on the slider and choose Slider Properties.

The analog join assigned to a slider is used to adjust the slider level. Analog joins have a range of 0 to 65535, which is represented in a gauge as 0 = slider empty, 65535 = slider full.

By default the slider will be assigned an analog join of zero. Before the slider can show any feedback in the form of the slider level, it must be assigned an analog join above zero.

When a slider is set to simulation mode, it will change state when manipulated. If simulation is not enabled on the slider, the slider will only change state when it's assigned digital join changes state. If the button is assigned a digital join, the join state will also change when the slider state changes, resulting in other GUI objects using the same digital join to be affected also.

Use this slider to change the slider fill level in the preview window.

Select the slider theme you would like to use. This choice is derived from the gauge/slider themes you have defined in your project within the Theme Manager.

Check this box to fill the slider in reverse. E.g. fill the slider from the right to left (or from top to bottom in the case of a vertical slider).

This option allows for manual entry of the position and size of the slider.

• X Position (left of slider)
• Y Position (top of slider)
• Width of the slider
• Height of the slider

The width and height of a gauge determines if the gauge is rendered in horizontal or vertical mode. When the height is greater than the width, the gauge will render in vertical mode (filling bottom to top). Otherwise, it will be deemed a horizontal gauge (filling left to right).

This windows shows how the slider will look in your GUI, showing the value as set in the Preview Value.