acessing dbcc_name from DEV_BROADCAST_DEVICEINTERFACE win32 programming

Question

Dear All,

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

But i wanted to know how to get device name of the inserted device.

i found one structure DEV_BROADCAST_DEVICEINTERFACE which is having dbcc_name as member. but i dont know which pointer to type cast to this structure to acess dbcc_name

please help me in this regard Vinayaka Karjigi

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 get DEV_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.

Answer 2

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