DirectInput Device Data

This section covers the following basic concepts of getting data from DirectInput devices.

The following topics describe specific details about output data and mouse, keyboard, and joystick input data.

DirectInput provides two mechanisms for identifying data retrieved from devices. Using the traditional mechanism, the application identifies the data as coming from a particular device object, such as a the x-axis on a mouse or the F1 key on a keyboard. With the newer system, available for the first time in DirectX 8.0, DirectInput associates application-defined values (for instance, identifiers for particular game actions such as moving or shooting) with the most suitable device objects available. When data is retrieved, the application does not concern itself with the actual device or device object from which the data comes. It acts only on the meaning of that data.

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