windows实时监测热插拔设备的变化2

//动态监测设备插拔
#include <Dbt.h>

BEGIN_MESSAGE_MAP(ParticipateMeeting, CDialogEx)
    ON_WM_DEVICECHANGE()
END_MESSAGE_MAP()

afx_msg BOOL OnDeviceChange(UINT nEventType, DWORD dwData);

BOOL ParticipateMeeting::OnDeviceChange(UINT nEventType, DWORD dwData)
{
    DEV_BROADCAST_DEVICEINTERFACE * dbd = (DEV_BROADCAST_DEVICEINTERFACE*)dwData;
    switch (nEventType)
    {
    case   DBT_DEVICEARRIVAL:
        MessageBox(L"Device arrival!");
        break;
    case   DBT_DEVICEQUERYREMOVE:
        //   Handle   device   removal   request
        MessageBox(L"Device request remove!");
        break;
    case   DBT_DEVICEREMOVECOMPLETE:
        //   Handle   device   removal
        MessageBox(L"Device removal!");
        break;
    case   DBT_DEVNODES_CHANGED:
        //
        MessageBox(L"DBT_DEVNODES_CHANGED");
        break;
    case   DBT_DEVTYP_DEVICEINTERFACE:
        //
        MessageBox(L"DBT_DEVTYP_DEVICEINTERFACE");
        break;

    case   DBT_DEVTYP_HANDLE:
        //
        MessageBox(L"DBT_DEVTYP_HANDLE");
        break;

    case   DBT_DEVTYP_OEM:
        //
        MessageBox(L"DBT_DEVTYP_OEM");
        break;

    case   DBT_DEVTYP_PORT:
        //
        MessageBox(L"DBT_DEVTYP_PORT");
        break;

    case   DBT_DEVTYP_VOLUME:
        //
        MessageBox(L"DBT_DEVTYP_VOLUME");
        break;

    default:
        MessageBox(L"others!");
        break;
    }

    return  TRUE;
}