Zero or more DIEP_* values denoting parameters of the effect that can be modified while the effect is playing. For a list of possible values, see InputeffectGetparameters. If an application attempts to change a parameter while the effect is playing and the driver does not support modifying that effect dynamically, the driver is permitted to stop the effect, update the parameters, then restart it. For more information, see InputeffectSetparameters.
Zero or more DIEP_* values describing the parameters supported by the effect. For example, if DIEP_ENVELOPE is set, the effect supports an envelope. For a list of possible values, see InputeffectGetparameters. It is not an error for an application to attempt to use effect parameters that are not supported by the device. The unsupported parameters are ignored.This information is provided to enable the application to tailor its use of force feedback to the capabilities of the specific device.