How to detect USB device insert.

From:

"Rhodri" <rhodri80@hotmail.com>

Newsgroups:

microsoft.public.vc.language

Date:

15 Feb 2007 09:23:14 -0800

Message-ID:

<1171560194.477718.228610@s48g2000cws.googlegroups.com>

Hello

I am writing a console app that needs to detect USB storage keys being
inserted and removed.

I have looked through the MS Help and decided I can use
RegisterDeviceNotification.

I lifted this snippet from the help files.

#include <windows.h>
#include <dbt.h>

HWND hWnd;

BOOL DoRegisterDeviceInterface(
    GUID InterfaceClassGuid,
    HDEVNOTIFY *hDevNotify
)
{

GUID DeviceGUID;
DWORD dRet = 0;

DEV_BROADCAST_DEVICEINTERFACE NotificationFilter;
char szMsg[80];

ZeroMemory( &NotificationFilter, sizeof(NotificationFilter) );
NotificationFilter.dbcc_size =
        sizeof(DEV_BROADCAST_DEVICEINTERFACE);
NotificationFilter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
NotificationFilter.dbcc_classguid = InterfaceClassGuid;

*hDevNotify = RegisterDeviceNotification( hWnd, &NotificationFilter,
DEVICE_NOTIFY_WINDOW_HANDLE);

if(!*hDevNotify)
{
    wsprintf(szMsg, "RegisterDeviceNotification failed: %d\n",
    GetLastError());
    MessageBox(hWnd, szMsg, "Registration", MB_OK);
    return FALSE;
}

}
However I am stuck trying to fill out the DEV_BROADCAST_VOLUME
structure.

The variable InterfaceClassGuid in this snippet was passed in to the
function. I do not know how to find the device class GUID. Any help
would be appreciated.

Rhodri