// EnumProcDlg.cpp : implementation file
//

#include "stdafx.h"
#include "EnumProc.h"
#include "EnumProcDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CEnumProcDlg dialog

CEnumProcDlg::CEnumProcDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEnumProcDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CEnumProcDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	CWinApp *pApp = AfxGetApp();
	m_lstImage.Create(16,16,ILC_COLOR,0,2);
	m_lstImage.SetBkColor(RGB(255,255,255));
	m_hIcon = pApp->LoadIcon(IDR_MAINFRAME);
	HICON hIcon = pApp->LoadIcon(IDI_PROC);
	m_lstImage.Add(hIcon);
	hIcon = pApp->LoadIcon(IDI_THREAD);
	m_lstImage.Add(hIcon);
}

void CEnumProcDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEnumProcDlg)
	DDX_Control(pDX, IDC_TREE_PROC, m_treeProc);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CEnumProcDlg, CDialog)
	//{{AFX_MSG_MAP(CEnumProcDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ENUM, OnEnum)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEnumProcDlg message handlers

BOOL CEnumProcDlg::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
	m_treeProc.SetImageList(&m_lstImage,TVSIL_NORMAL);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CEnumProcDlg::OnEnum() 
{
	// TODO: Add your control notification handler code here
	m_treeProc.DeleteAllItems();
	
	// 開(kāi)始枚舉，結(jié)果保存在m_arSet數(shù)組中
	Enum();
	int nSize = m_arSet.GetSize() - 1;
	CString strInfo;

	// 從m_arSet數(shù)組中讀取數(shù)據(jù)并顯示
	for (int nCount = 0;nCount < nSize;nCount++)
	{
		strInfo.Format(_T("%s 0x%x"),m_arSet[nCount].m_procInfo.szExeFile,
			m_arSet[nCount].m_procInfo.th32ProcessID);
		HTREEITEM hItem = m_treeProc.InsertItem(strInfo,0,0);
		int nNum = m_arSet[nCount].m_arThread.GetSize() - 1;
		for (int nIndex = 0;nIndex < nNum;nIndex++)
		{
			strInfo.Format("0x%x %d",m_arSet[nCount].m_arThread[nIndex].th32ThreadID,
				m_arSet[nCount].m_arThread[nIndex].tpBasePri);
			m_treeProc.InsertItem(strInfo,1,1,hItem);
		}
	}
}

void CEnumProcDlg::Enum()
{
	m_arSet.RemoveAll();

	// 對(duì)系統(tǒng)中的進(jìn)程“拍照”
	HANDLE hSnapShot = CreateToolhelp32Snapshot(TH32CS_SNAPALL,0); 
    if (hSnapShot == NULL)
    { 
		return; 
    };

	// 枚舉第一個(gè)進(jìn)程
	CThreadSet set;
	set.m_procInfo.dwSize = sizeof(PROCESSENTRY32); 
	BOOL bSuccess = Process32First(hSnapShot,&(set.m_procInfo));

	// 遞歸枚舉隨后的進(jìn)程
    while (bSuccess) 
    {
		m_arSet.Add(set);
		set.m_procInfo.dwSize = sizeof(PROCESSENTRY32);
		bSuccess = Process32Next(hSnapShot,&(set.m_procInfo));
	}

	// 將“線程集”中的線程數(shù)組清空
	UINT nSize = m_arSet.GetSize() - 1;
	UINT nCount;
	THREADENTRY32 threadInfo;
	for (nCount = 0;nCount < nSize;nCount++)
	{
		m_arSet[nCount].m_arThread.RemoveAll();
	}
 	threadInfo.dwSize = sizeof(THREADENTRY32);
	bSuccess = Thread32First(hSnapShot,&threadInfo);
	while (bSuccess)
	{
		for (nCount = 0;nCount < nSize;nCount++)
		{
			// 將線程存放到對(duì)應(yīng)于其進(jìn)程的“線程集”中
			if (m_arSet[nCount].m_procInfo.th32ProcessID
				== threadInfo.th32OwnerProcessID)
			{
				m_arSet[nCount].m_arThread.Add(threadInfo);
				break;
			}
		}
		threadInfo.dwSize = sizeof(THREADENTRY32);
		bSuccess = Thread32Next(hSnapShot,&threadInfo);
	}
	// 關(guān)閉“快照”句柄
	CloseHandle(hSnapShot);
}