usbportdlg.cpp

修正的USB读取端口程序 能正确读出USB设备的相关信息

// USBPortDlg.cpp : implementation file
//

#include "stdafx.h"
#include "USBPort.h"
#include "USBPortDlg.h"
#include <initguid.h>  
#include <regstr.h> 
#include <winioctl.h>

extern "C" {
#include "setupapi.h"
#include "hidsdi.h"
}

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

DEFINE_GUID(GUID_DEVINTERFACE_DISK, 0x53f56307L, 0xb6bf, 0x11d0, 0x94, 0xf2, 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUSBPortDlg dialog

CUSBPortDlg::CUSBPortDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUSBPortDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUSBPortDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CUSBPortDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUSBPortDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUSBPortDlg, CDialog)
	//{{AFX_MSG_MAP(CUSBPortDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_FIND, OnSearch)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUSBPortDlg message handlers

BOOL CUSBPortDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	GetDlgItem(IDC_FIND)->SetFocus();
	return FALSE;  // return TRUE  unless you set the focus to a control
}

void CUSBPortDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CUSBPortDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CUSBPortDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CUSBPortDlg::OnSearch() 
{
	// TODO: Add your control notification handler code here
	char szVolumeAccessPath[] = "\\\\.\\H:";     // "\\.\X:"

	HANDLE hCom;
 
	long DiskNumber = -1;
 
	HANDLE hVolume = CreateFile(szVolumeAccessPath, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, NULL, NULL);
 
	if (hVolume == INVALID_HANDLE_VALUE) 
	{
		return;
	}
	
	STORAGE_DEVICE_NUMBER sdn;
	DWORD dwBytesReturned = 0;

	long res = DeviceIoControl(hVolume, IOCTL_STORAGE_GET_DEVICE_NUMBER, NULL, 0, &sdn, sizeof(sdn), &dwBytesReturned, NULL);
 
	if ( res ) 
	{
		DiskNumber = sdn.DeviceNumber;
	}

	CloseHandle(hVolume);

	m_strLog.Empty();

	m_strLog = _T("正在查找系统中HID类的GUID标识...\n");
	SetDlgItemText(IDC_EDIT_REPORT1,m_strLog);


	// 查找本系统中HID类的GUID标识
	GUID guidHID;

	guidHID = (GUID)GUID_DEVINTERFACE_DISK;

//	HidD_GetHidGuid(&guidHID);
//	m_strLog = _T("HID类的GUID标识为\r\n");

	CString strShow;
	strShow.Format("%08x-%04x-%04x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x\r\n",
		guidHID.Data1,guidHID.Data2,guidHID.Data3,guidHID.Data4[0],
		guidHID.Data4[1],guidHID.Data4[2],guidHID.Data4[3],guidHID.Data4[4],
		guidHID.Data4[5],guidHID.Data4[6],guidHID.Data4[7]);

	m_strLog = strShow;
	SetDlgItemText(IDC_EDIT_REPORT2,m_strLog);

	// 准备查找符合HID规范的USB设备
	HDEVINFO hDevInfo = SetupDiGetClassDevs(&guidHID,NULL,NULL,
		DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
	
	UINT nIndex = 0;
	m_strLog = _T("正在查找可用的USB设备...\n");
	SetDlgItemText(IDC_EDIT_REPORT3,m_strLog);

	// 查找USB设备接口
	SP_DEVICE_INTERFACE_DATA strtInterfaceData;
	SP_DEVICE_INTERFACE_DATA spdid;

	strtInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
	spdid.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);

	DWORD dwIndex = 0;

	while ( true )
	{
		BOOL bSuccess = SetupDiEnumDeviceInterfaces(hDevInfo,NULL,&guidHID,dwIndex,
			&spdid);
		if (!bSuccess)
		{
			m_strLog = _T("抱歉，未找到可用的USB设备\n");
			SetDlgItemText(IDC_EDIT_REPORT4,m_strLog);
			SetupDiDestroyDeviceInfoList(hDevInfo);
			return;
		}

		SetupDiEnumDeviceInterfaces(hDevInfo,NULL,&guidHID,dwIndex,&strtInterfaceData);

		// 若找到了设备，则读取设备路径名
		SP_DEVICE_INTERFACE_DETAIL_DATA strtDetailData;

		strtDetailData.cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);

		DWORD dwSize = 0;

		SetupDiGetDeviceInterfaceDetail(hDevInfo,&strtInterfaceData,
			NULL,0,&dwSize,NULL);

		BYTE Buf[1024];
		PSP_DEVICE_INTERFACE_DETAIL_DATA pspdidd = (PSP_DEVICE_INTERFACE_DETAIL_DATA)Buf;
		SP_DEVINFO_DATA  spdd;

		pspdidd->cbSize = sizeof(*pspdidd); // 5 Bytes!
   
		ZeroMemory((PVOID)&spdd, sizeof(spdd));
		spdd.cbSize = sizeof(spdd);


		if (!SetupDiGetDeviceInterfaceDetail(hDevInfo,&strtInterfaceData,
			  pspdidd,dwSize,&dwSize,&spdd))
		{
			AfxMessageBox(_T("查找设备路径时出错!"));
			SetupDiDestroyDeviceInfoList(hDevInfo);
			return;
		}

		// 找到了设备路径
		m_strPath = pspdidd->DevicePath;
		strShow.Format("可以通过路径%s访问设备\r\n",m_strPath);
		m_strLog = strShow;
		SetDlgItemText(IDC_EDIT_REPORT4,m_strLog);
		SetDlgItemText(IDC_EDIT_ID,m_strPath);

		// 开放与设备的通信
	//	HANDLE hCom = CreateFile(m_strPath,GENERIC_READ | GENERIC_WRITE,
	//		0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
		hCom = CreateFile(pspdidd->DevicePath, GENERIC_READ | GENERIC_WRITE,
			0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
	//	hCom = CreateFile(pspdidd->DevicePath, 0, FILE_SHARE_READ | 
	//		FILE_SHARE_WRITE, NULL, OPEN_EXISTING, NULL, NULL);
		if (hCom == INVALID_HANDLE_VALUE)
		{
			AfxMessageBox(_T("无法打开通信端口"));
			SetupDiDestroyDeviceInfoList(hDevInfo);
			return;
		}
		
		STORAGE_DEVICE_NUMBER sdn;
		DWORD dwBytesReturned = 0;
		
		res = DeviceIoControl(hCom, IOCTL_STORAGE_GET_DEVICE_NUMBER, NULL, 0, &sdn, sizeof(sdn), &dwBytesReturned, NULL);
		
		if ( res ) 
		{
			if ( DiskNumber == (long)sdn.DeviceNumber ) 
			{
				// 查询设备标识
				HIDD_ATTRIBUTES strtAttrib;

				strtAttrib.Size= sizeof(HIDD_ATTRIBUTES);

			//	m_strPath += _T("正在读取设备的标识...\r\n");
			//	SetDlgItemText(IDC_EDIT_ID,m_strPath);

				if (!HidD_GetAttributes(hCom,&strtAttrib))
				{
					AfxMessageBox(_T("查询设备状态时出错!"));
					CloseHandle(hCom);
					SetupDiDestroyDeviceInfoList(hDevInfo);
					return;
				}

				// 将有关该设备的标识显示出来
				m_strPath = _T("已读取，见右边所示\r\n");
				SetDlgItemText(IDC_EDIT_REPORT5,m_strPath);

				// 显示供应商标识
				strShow.Format("0x%x",strtAttrib.VendorID);
				SetDlgItemText(IDC_ID_VENDOR,strShow);

				// 显示产品标识
				strShow.Format("0x%x",strtAttrib.ProductID);
				SetDlgItemText(IDC_ID_PRODUCT,strShow);

				// 显示产品版本号
				strShow.Format("%d",strtAttrib.VersionNumber);
				SetDlgItemText(IDC_ID_VERSION,strShow);

				// 释放资源
				CloseHandle(hCom);
				SetupDiDestroyDeviceInfoList(hDevInfo);

				return;
			}

		}

		dwIndex++;

	}

	
}