Mobile Progress Wheel
From Xojo Documentation
A Progress Wheel is used to indicate that a task or operation of unknown length is being performed. When the Progress Wheel is visible it displays on the screen with a spinning animation.
Below are commonly used properties. Refer to MobileProgressWheel in the Language Reference for the complete list.
Shade - Specifies the shade (light or dark) for the Progress Wheel. Dark is the default.
Visible - A boolean that indicates if the Progress Wheel is visible when your app runs. When it is visible, it displays a spinning animation. Set it to Invisible when it is not needed.
Long tasks should be in a Thread so that the UI remains responsive and the spinning animation the Progress Wheel can work. Using a Progress Wheel is as easy as making it visible before you begin the task: