MXDM_GETNUMDEVS

The MXDM_GETNUMDEVS message requests a user-mode mixer driver to return the number of device instances it supports.

Parameters

uDeviceId

Device identifier (0, 1, 2, and so on) for the target device.

uMsg

MXDM_GETNUMDEVS

dwUser

Not used.

lParam1

Not used.

lParam2

Not used.

Return Value

Returns the number of devices the driver supports.

Comments

A client sends the MXDM_GETNUMDEVS message by calling the user-mode driver’s mxdMessage entry point, passing the specified parameters.