USB移动存储设备的检测、写入及弹出
本帖最后由 zqckzqck 于 2013-01-10 13:16:22 编辑
USB设备的基本操作涉及USB存储设备的插入检测及写入文件，同时可以在写入结束后自动弹出，下面介绍自己的实现方法。
（1）注册设备。
在检测之前需要对检测的设备进行注册。具体的代码如下：
//首先注册设备
void CUSBTestDlg::OnBtnRegister()
{
// TODO: Add your control notification handler code here
static const GUID GUID_DEVINTERFACE_LSIT[] =
{
//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,0X00,0X00,0X4F,0XC3,0X35,0X8C}}
};
//注册插拔事件
HDEVNOTIFY hDevNotify;
DEV_BROADCAST_DEVICEINTERFACE NotifacationFiler;
ZeroMemory(&NotifacationFiler,sizeof(DEV_BROADCAST_DEVICEINTERFACE));
NotifacationFiler.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE);
NotifacationFiler.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
for(int i=0;i<sizeof(GUID_DEVINTERFACE_LSIT)/sizeof(GUID);i++)
{
NotifacationFiler.dbcc_classguid = GUID_DEVINTERFACE_LSIT[i];//GetCurrentUSBGUID();//m_usb->GetDriverGUID();
hDevNotify = RegisterDeviceNotification(m_hWnd,&NotifacationFiler,DEVICE_NOTIFY_WINDOW_HANDLE);
if(!hDevNotify)
{
int Err = GetLastError();
MessageBox("RegisterDeviceNotificationFailed");
}
else
MessageBox("RegisterDeviceNotificationSuccess");
}
}
（2）利用ON_WM_DEVICECHANGE实现检测。
这里需要手动添加ON_WM_DEVICECHANGE消息。首先头文件中声明响应函数：
afx_msg BOOL OnDeviceChange(UINT nEventType, DWORD dwData);
定义响应函数：
[code=css]BOOL CUSBTestDlg::OnDeviceChange(UINT nEventType, DWORD dwData)
{
PDEV_BROADCAST_HDR pdb;
PDEV_BROADCAST_VOLUME pdbv;
CString strVolume="";
pdb = (PDEV_BROADCAST_HDR)dwData;
switch(nEventType)
{
case DBT_DEVICEARRIVAL:
// Check whether a CD or DVD was inserted into a drive.
if(pdb->dbch_devicetype==DBT_DEVTYP_VOLUME)
{
pdbv = (PDEV_BROADCAST_VOLUME)pdb;
JudgeDeviceChangePath(pdbv->dbcv_unitmask,strVolume);//获取卷标
g_strVolume = strVolume;
IOFileToMobileDevice(strVolume);//写入数据
}
if(pdb->dbch_devicetype==DBT_DEVTYP_DEVICEINTERFACE)
{
}
break;
case DBT_DEVICEREMOVECOMPLETE:
break;
default:
break;
}
return TRUE;
}
[/code]
（3）弹出USB设备。
BOOL CUSBTestDlg::UnInstallUsb(char szDriveName)
