usbportdlg.cpp

这是一个USB编程例子

// USBPortDlg.cpp : implementation file
//

#include "stdafx.h"
#include "USBPort.h"
#include "USBPortDlg.h"
#include "setupapi.h"
#include "usbinfo.h"
extern   "C"  
{
	#include "DDK\\hidsdi.h"
}
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#pragma comment( lib, "DDK\\hid.lib")
#pragma comment( lib, "Setupapi.lib")
//extern "C" BOOLEAN HidD_GetAttributes (HANDLE HidDeviceObject,PHIDD_ATTRIBUTES    Attributes);
/////////////////////////////////////////////////////////////////////////////
// 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
	DDX_Control(pDX, IDC_TREE1, m_TreeCtrl);
}

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
	ON_BN_CLICKED(IDC_BUTTON1, &CUSBPortDlg::OnBnClickedButton1)
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
	m_strLog.Empty();

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

	// 查找本系统中HID类的GUID标识
//	GUID guidHID= {   0xA5DCBF10L,0x6530,0x11D2,0x90,0x1F,0x00,0xC0,0x4F,0xB9,0x51,0xED};
//	GUID guidHID= {     0x53f56307L,0xb6bf,0x11d0,0x94,0xf2,0x00,0xa0,0xc9,0x1e,0xfb,0x8b};
	GUID guidHID;
	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_REPORT,m_strLog);
	m_TreeCtrl.DeleteAllItems();
	HTREEITEM root =m_TreeCtrl.InsertItem("HID设备",0,0);
	// 准备查找符合HID规范的USB设备
	HDEVINFO hDevInfo = SetupDiGetClassDevs(&guidHID,NULL,0,
		DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
	
	UINT nIndex = 0;
	m_strLog += _T("正在查找可用的USB设备...\r\n");
//	SetDlgItemText(IDC_EDIT_REPORT,m_strLog);
	int deviceIndex=0;
	for(deviceIndex=0;;deviceIndex++)
	{
		// 查找USB设备接口
		SP_DEVICE_INTERFACE_DATA strtInterfaceData;
		strtInterfaceData.cbSize = sizeof (SP_INTERFACE_DEVICE_DATA);

		BOOL bSuccess = SetupDiEnumDeviceInterfaces(hDevInfo,NULL,&guidHID,deviceIndex,&strtInterfaceData);
		if (!bSuccess)
		{
			DWORD err=GetLastError();
			m_strLog += _T("抱歉，未找到可用的USB设备");
			//SetDlgItemText(IDC_EDIT_REPORT,m_strLog);
			//SetupDiDestroyDeviceInfoList(hDevInfo);
			break;
		}

		// 若找到了设备，则读取设备路径名

		DWORD requiesize=0;
		if (!SetupDiGetDeviceInterfaceDetail(hDevInfo,&strtInterfaceData,NULL,0,&requiesize,NULL))
		{
		}
		if(requiesize<=0)continue;
		PSP_DEVICE_INTERFACE_DETAIL_DATA strtDetailData;
		strtDetailData=(PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(requiesize); 
		strtDetailData-> cbSize=sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); 

		if (!SetupDiGetDeviceInterfaceDetail(hDevInfo,&strtInterfaceData,strtDetailData,requiesize,NULL,NULL))
		{
			DWORD err=GetLastError();
		//	AfxMessageBox(_T("查找设备路径时出错!")); 
		//	SetupDiDestroyDeviceInfoList(hDevInfo);
			continue;
		}


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

		// 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); 

		HANDLE hCom = CreateFile(m_strPath,0 ,
			FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
		if (hCom == INVALID_HANDLE_VALUE)
		{
			DWORD err=GetLastError();
		//	AfxMessageBox(_T("无法打开通信端口"));
		//	SetupDiDestroyDeviceInfoList(hDevInfo);
			continue;
		}

		// 查询设备标识
		HIDD_ATTRIBUTES strtAttrib;
		m_strPath += _T("正在读取设备的标识...\r\n");
		SetDlgItemText(IDC_EDIT_REPORT,m_strPath);

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

		HTREEITEM hTreeItem = m_TreeCtrl.InsertItem(m_strPath,0,0,root);
		// 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_REPORT,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);
}

void CUSBPortDlg::OnBnClickedButton1()
{
	CUsbInfo usbInfo;
	usbInfo.m_pTreeCtrl=&m_TreeCtrl;
	usbInfo.EnumDevices();
}