Add virtual joysticks to your PRVircon UI using the PRVirconJoyAdd function. For example:

The above statement adds a virtual joystick named "Left Stick" positioned 130 pixels from the left side of the screen and 130 pixels from the bottom of the screen, at normal scale size and with no rotation to the sprite images used. It uses Style 1a for the joystick nub sprite and Style 1 Round for the joystick's outline sprite. The joystick ID is captured in the variable leftStick.