The controls have been created to support proper z-order with other "native" controls supplied with Delphi, such as TMapView and TWebBrowser, i.e. they can overlay the other native controls
Note that at present, most of the controls will function only on Android and iOS, however the controls are rendered in the designer close to what they will look like on the target platform.
Please refer to the native controls documentation for details about the controls themselves, including installation
As TNativeSlider is based on SeekBar, and it was necessary to create a descendant of the Java class (in order to implement a vertical SeekBar), when creating your own project, you will need to add dw-kastri-base.jar or dw-kastri-base-2.0.0.jar for Delphi 11 and higher, to the Libraries node under the Android platform in Project Manager in your project. (This is already added in the demos)
Here's how the controls look:
