DBT_CONFIGCHANGED Overview  Group

The operating system sends the DBT_CONFIGCHANGED device message to indicate that the current configuration has changed, due to a dock or undock. An application or driver that stores data in the registry under the HKEY_CURRENT_CONFIG key should update the data.

To send the DBT_CONFIGCHANGED device message, the operating system sends the WM_DEVICECHANGE message with wParam set to DBT_CONFIGCHANGED and lParam set to zero.

Parameters

lParam

lParam is zero when the WM_DEVICECHANGE message is sent with wParam set to DBT_CONFIGCHANGED.

Return Values

Return TRUE.

See Also

DBT_CONFIGCHANGECANCELED, DBT_QUERYCHANGECONFIG, WM_DEVICECHANGE 

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