acessing dbcc_name from DEV_BROADCAST_DEVICEINTERFACE win32 programming

Question

I have some c code with me which detects the usb cable removal and insertion.

I found one structure DEV_BROADCAST_DEVICEINTERFACE which is having

Answer 1

You need to cast a DEV_BROADCAST_HEADER* to a DEV_BROADCAST_DEVICEINTERFACE*. You are allowed to do so if and only if dbch_devicetype==DBT_DEVTYP_DEVICEINTERFACE.

You getDEV_BROADCAST_HEADER* as the LPARAM of WM_DEVICECHANGE.

To do something useful with dbcc_name, you have to pass it to SetupDiOpenDeviceInterface(). This will give you a SP_DEVICE_INTERFACE_DATA with one SP_DEVINFO_DATA. You can then call functions like SetupDiGetDeviceRegistryProperty to learn more about the device.