DBT_USERDEFINED

The DBT_USERDEFINED device message identifies a user-defined system message.

To send the DBT_USERDEFINED device message, send the WM_DEVICECHANGE message with wParam set to DBT_USERDEFINED and lParam set as described following.

dwData = (DWORD) lParam;

Parameters

dwData

Address of the user-defined data. The data must be in the format specified by the _DEV_BROADCAST_USERDEFINED structure. lParam is application-defined. May be zero.

See Also

_DEV_BROADCAST_USERDEFINED, WM_DEVICECHANGE

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