VC自动侦测USB参考

关于USB设备的自动侦测,该如何解决

http://m.myexception.cn/vc-mfc/114413.html

关于USB设备的自动侦测

不知道为什么，U盘能侦测到插入和移除， USB 摄像头就是不行，谁给帮忙解答一下

GUID CAMERA = { 0x6BDD1FC6, 0x810F, 0x11D0, 0xBE, 0xC7, 0x08, 0x00, 0x2B, 0xE2, 0x09, 0x2F };

DEV_BROADCAST_DEVICEINTERFACE NotificationFilter;

ZeroMemory( &NotificationFilter, sizeof(NotificationFilter) );

NotificationFilter.dbcc_size = sizeof(NotificationFilter);

NotificationFilter.dbcc_devicetype=DBT_DEVTYP_DEVICEINTERFACE;

NotificationFilter.dbcc_classguid=CAMERA;

RegisterDeviceNotification(hWnd,&NotificationFilter, DEVICE_NOTIFY_WINDOW_HANDLE);

侦测：

if( message == WM_DEVICECHANGE )

{

if ( wParam==DBT_DEVNODES_CHANGED )

int kk=1;

else if ( wParam == DBT_DEVICEARRIVAL) // device arrival

{

MessageBox(NULL,"arrival","test",MB_OK);

return 1;

}

else if (wParam == DBT_DEVICEREMOVECOMPLETE) // device remove

{

MessageBox(NULL,"remove","test",MB_OK);

return -1;

}

}

------解决方案--------------------

你确定你的GUID 对吗？ 试一下这几个GUID

C/C++ code

static const GUID GUID_DEVINTERFACE_LIST[] =
{
// GUID_DEVINTERFACE_USB_DEVICE
{ 0xA5DCBF10, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } },

// GUID_DEVINTERFACE_DISK
{ 0x53f56307, 0xb6bf, 0x11d0, { 0x94, 0xf2, 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b } },

// GUID_DEVINTERFACE_HID,
{ 0x4D1E55B2, 0xF16F, 0x11CF, { 0x88, 0xCB, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30 } },

// GUID_NDIS_LAN_CLASS
{ 0xad498944, 0x762f, 0x11d0, { 0x8d, 0xcb, 0x00, 0xc0, 0x4f, 0xc3, 0x35, 0x8c } }

//// GUID_DEVINTERFACE_COMPORT
//{ 0x86e0d1e0, 0x8089, 0x11d0, { 0x9c, 0xe4, 0x08, 0x00, 0x3e, 0x30, 0x1f, 0x73 } },

//// GUID_DEVINTERFACE_SERENUM_BUS_ENUMERATOR
//{ 0x4D36E978, 0xE325, 0x11CE, { 0xBF, 0xC1, 0x08, 0x00, 0x2B, 0xE1, 0x03, 0x18 } },

//// GUID_DEVINTERFACE_PARALLEL
//{ 0x97F76EF0, 0xF883, 0x11D0, { 0xAF, 0x1F, 0x00, 0x00, 0xF8, 0x00, 0x84, 0x5C } },

//// GUID_DEVINTERFACE_PARCLASS
//{ 0x811FC6A5, 0xF728, 0x11D0, { 0xA5, 0x37, 0x00, 0x00, 0xF8, 0x75, 0x3E, 0xD1 } }
};

//  我是把这几个GUID都注册了一遍，没注册过摄像头的，你着重确定GUID是否正确吧
for(int i=0; i<sizeof(GUID_DEVINTERFACE_LIST)/sizeof(GUID); i++) {
NotificationFilter.dbcc_classguid = GUID_DEVINTERFACE_LIST[i];
hDevNotify = RegisterDeviceNotification(m_hWnd, &NotificationFilter, DEVICE_NOTIFY_WINDOW_HANDLE);
}

vc检测USB设备插入或移除

http://blog.hehehehehe.cn/a/412.htm

1.添加消息映射

消息映射

BEGIN_MESSAGE_MAP(CONSTNETCNDlg, CDialog)

//{{AFX_MSG_MAP(CONSTNETCNDlg)

ON_WM_PAINT()

ON_WM_QUERYDRAGICON()

...

ON_WM_DEVICECHANGE()

//}}AFX_MSG_MAP

声明消息响应函数:

afx_msg BOOL OnDeviceChange(UINT nEventType, DWORD dwData);

定义函数内容:

BOOL CONSTNETCNDlg::OnDeviceChange(UINT nEventType,DWORD dwData)

{

DEV_BROADCAST_DEVICEINTERFACE* dbd = (DEV_BROADCAST_DEVICEINTERFACE*) dwData;

//这里进行信息匹配,比如guid等

//针对各个事件进行处理.

switch (nEventType)

{

case DBT_DEVICEREMOVECOMPLETE:

MessageBox("移除USB");

break;

case DBT_DEVICEARRIVAL:

MessageBox("发现USB");

break;

default:

break;

}

return TRUE;

}

2.注册设备（添加到OnInitDialog中即可）

DEV_BROADCAST_DEVICEINTERFACE DevInt;

memset(&DevInt,0,sizeof(DEV_BROADCAST_DEVICEINTERFACE));

DevInt.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE);

DevInt.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;

DevInt.dbcc_classguid = { 0xA5DCBF10, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } };

RegisterDeviceNotificationthis->GetSafeHwnd(),&DevInt,DEVICE_NOTIFY_WINDOW_HANDLE);

PS:只有注册了该设备,OnDeviceChange才能获得详细的信息,否则收到的nEventType参数都是0007，dwData无数据。