DBT_CUSTOMEVENT

The system sends the DBT_CUSTOMEVENT device event when a driver-defined custom event has occurred.

To broadcast this device event, the system uses the WM_DEVICECHANGE message with wParam set to DBT_CUSTOMEVENT and lParam set as described following.

Parameters

wParam

Set to DBT_CUSTOMEVENT.

lParam

Pointer to a structure identifying the device. To determine the structure type, treat the structure as a DEV_BROADCAST_HDR structure and check its dbch_devicetype member.

Return Values

Return TRUE.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Unsupported.
  Header: Declared in Dbt.h.

See Also

Device Management Overview, Device Management Events, DEV_BROADCAST_HDR, WM_DEVICECHANGE