RegisterDeviceNotification通过GetLastError的返回值1066

Question

RegisterDeviceNotification(hNotificationHandl, &NotificationFilter,DEVICE_NOTIFY_WINDOW_HANDLE);得到错误返回值是1066，请问是什么问题，上面那个参数有问题

Answer 1

`#include
#include

HWND hWnd;

BOOL DoRegisterDeviceInterface(
GUID InterfaceClassGuid,
HDEVNOTIFY hDevNotify
)
/
Routine Description:
Registers for notification of changes in the device interfaces for
the specified interface class GUID.

Parameters:
InterfaceClassGuid - The interface class GUID for the device
interfaces.

hDevNotify - Receives the device notification handle. On failure, 
    this value is NULL.

Return Value:
If the function succeeds, the return value is TRUE.
If the function fails, the return value is FALSE.
*/

{
DEV_BROADCAST_DEVICEINTERFACE NotificationFilter;

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) 
{
    printf("RegisterDeviceNotification failed: %d\n", 
            GetLastError());
    return FALSE;
}

return TRUE;

}

int _tmain(void)
{
HDEVNOTIFY hDevNotify;

if(!DoRegisterDeviceInterface(GUID_DEVINTERFACE_VOLUME, &hDevNotify))
{
    printf("DoRegisterDeviceInterface failed\n");
    return 0;
}
return 1;

}
``