Force Feedback

Force feedback is the generation of push or resistance in an input/output device, for example by motors mounted in the base of a joystick. DirectInput allows you to generate force-feedback effects for devices that have compatible drivers.

The following sections introduce the elements of force feedback:

• Basic Concepts of Force Feedback
• Effect Enumeration
• Information About a Supported Effect
• Creating an Effect
• Effect Direction
• Examples of Setting Effect Direction
• Envelopes and Offsets
• Effect Playback
• Downloading and Unloading Effects
• Changing an Effect
• Gain
• Force-Feedback State
• Effect Object Enumeration
• Constant Forces
• Ramp Forces
• Periodic Effects
• Conditions
• Custom Forces
• Device-Specific Effects

To enumerate, create, and manipulate effects, you must first obtain a pointer to the IDirectInputDevice2 interface for the force-feedback device. For an example of how to do this, see Creating the DirectInput Device.