Vehicular heads-up display control techniques wherein content of a virtual display generated by the heads-up display system is controlled by actions of an occupant of the vehicle. The control device can be a voice-reception system which receives vocal commands from the occupant and/or a gesture-detection system which detects gestures by the occupant. One such gesture-detection system includes a camera having a field of view of hands or an upper body region of an occupant expected to exercise control of the heads-up display and a processor arranged to receive images from the camera, detect movement of a head, hand or arm of the occupant in one of predetermined number of areas and perform a function based on the detection of movement in the predetermined area. The function may be to alter the content of the heads-up display or adjustment of a vehicle component.