DBT_DEVICEQUERYREMOVE Overview  Group

The operating system sends the DBT_DEVICEQUERYREMOVE device message to request permission to remove a device. Any application can deny this request and cancel the removal.

To send the DBT_DEVICEQUERYREMOVE device message, the operating system sends the WM_DEVICECHANGE message with wParam set to DBT_DEVICEQUERYREMOVE and lParam set to the address of a DEV_BROADCAST_HDR structure identifying the device to remove.

dwData = (DWORD) lParam;
 

Parameters

dwData

Address of a DEV_BROADCAST_HDR structure identifying the device to remove.

Return Values

Return TRUE to grant permission to remove a device.

Return BROADCAST_QUERY_DENY to deny permission to remove a device.

See Also

DEV_BROADCAST_HDR, WM_DEVICECHANGE

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