testusbtreedlg.cpp

列举出WINDOWS中所有的USB设备的一个小程序。很实用

// TestUSBTreeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TestUSBTree.h"
#include "TestUSBTreeDlg.h"
#include "UsbTree.h"
#include <dbt.h>

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

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CTestUSBTreeDlg dialog

CTestUSBTreeDlg::CTestUSBTreeDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTestUSBTreeDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTestUSBTreeDlg)
		// 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 CTestUSBTreeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTestUSBTreeDlg)
	DDX_Control(pDX, IDC_USB_TREE, m_UsbTree);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTestUSBTreeDlg, CDialog)
	//{{AFX_MSG_MAP(CTestUSBTreeDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_REFRESH_TREE, OnRefreshTree)
	ON_MESSAGE(WM_DEVICECHANGE,OnDeviceChange)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestUSBTreeDlg message handlers

BOOL CTestUSBTreeDlg::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
	EnumAllUSBDevice();
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CTestUSBTreeDlg::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 CTestUSBTreeDlg::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 CTestUSBTreeDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CTestUSBTreeDlg::OnRefreshTree() 
{
	EnumAllUSBDevice();
}

void CTestUSBTreeDlg::EnumUSBHubPort(HTREEITEM hTreeParentItem, LPCTSTR szHubName) 
{
	DWORD dwPortCount = MAX_PORTS_NUM;
	DWORD dwIndex;
	HTREEITEM	hTreeChildItem;
	HubPortStruct pPortInfo[MAX_PORTS_NUM];
	TCHAR szItemText[MAX_PATH];
	CUsbTree usbTree;

	if (usbTree.EnumerateHubPorts(szHubName, &dwPortCount, pPortInfo) != UT_SUCESS)
		return;
	for (dwIndex=0 ; dwIndex<dwPortCount ; dwIndex++)
	{
		wsprintf(szItemText, "Port %d: ", dwIndex + 1);
		if (!pPortInfo[dwIndex].bConnected)
		{
			lstrcat(szItemText, "No Device");
			m_UsbTree.InsertItem(szItemText, hTreeParentItem);
			continue;
		}
		lstrcat(szItemText, pPortInfo[dwIndex].szDevDesc);
		hTreeChildItem = m_UsbTree.InsertItem(szItemText, hTreeParentItem);

		if (pPortInfo[dwIndex].bExtHub)
			EnumUSBHubPort(hTreeChildItem, pPortInfo[dwIndex].szHubName);
	}
}

void CTestUSBTreeDlg::EnumAllUSBDevice() 
{
	CUsbTree usbTree;
	HC_InfoStruct pHCInfo[MAX_PORTS_NUM];
	DWORD dwCount = MAX_PORTS_NUM;
	HTREEITEM	hTreeItem;

	m_UsbTree.DeleteAllItems();

	DWORD dwIndex;
	usbTree.EnumHostControllers(&dwCount, pHCInfo);
	for (dwIndex=0 ; dwIndex<dwCount ; dwIndex++)
	{
		hTreeItem = m_UsbTree.InsertItem(pHCInfo[dwIndex].szDevDesc);
		EnumUSBHubPort(hTreeItem, pHCInfo[dwIndex].szRootHub);
	}
}


LRESULT CTestUSBTreeDlg::OnDeviceChange( WPARAM nEventType, LPARAM dwData )
{
	switch (nEventType)
	{
	case DBT_DEVICEARRIVAL:
	case DBT_DEVICEREMOVECOMPLETE:
		EnumAllUSBDevice();
		break;

	default:
		break;
	}

	return TRUE;
	
}