note : simple tool to kill process

今天遇到一个BUG修改的判定问题。

客户端A启动安装程序B进行自升级，B杀掉A及启动A的服务。然后B进行升级，升级完成后启动A。

问题出在InstallShield制作的B(静默安装包)，Ｂ杀掉A后，也退出了。

打包的同学怀疑：A是Ｂ的父进程，A被杀掉后，也消失了。

为了验证是否如此，是改安装包，还是改客户端，写一个测试程序来判断修改方。

测试程序Ｃ模拟Ｂ杀Ａ，　如果A以同样的方式启动Ｃ，C杀掉A后，如果C没有退出，证明安装包有问题。

测试程序的思路：

* 用管理员权限启动C

* 从进程管理器中，取得被杀进程的PID, 填入C.

* OpenProcess(PID), 取得进城句柄hProcess

* TerminateProcess(hProcess), 提示结果。

测试代码如下：

// srcKillPidDlg.h : header file
//

#pragma once


// CsrcKillPidDlg dialog
class CsrcKillPidDlg : public CDialogEx
{
// Construction
public:
	CsrcKillPidDlg(CWnd* pParent = NULL);	// standard constructor

// Dialog Data
	enum { IDD = IDD_SRCKILLPID_DIALOG };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support


// Implementation
protected:
	HICON m_hIcon;

	// Generated message map functions
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	DECLARE_MESSAGE_MAP()
public:
	long m_lPid;
	afx_msg void OnBnClickedBtnKill();
};

// srcKillPidDlg.cpp : implementation file
//

#include "stdafx.h"
#include "srcKillPid.h"
#include "srcKillPidDlg.h"
#include "afxdialogex.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CAboutDlg dialog used for App About

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

// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()


// CsrcKillPidDlg dialog




CsrcKillPidDlg::CsrcKillPidDlg(CWnd* pParent /*=NULL*/)
	: CDialogEx(CsrcKillPidDlg::IDD, pParent)
	, m_lPid(0)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CsrcKillPidDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
	DDX_Text(pDX, IDC_EDIT_PID, m_lPid);
}

BEGIN_MESSAGE_MAP(CsrcKillPidDlg, CDialogEx)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTN_KILL, &CsrcKillPidDlg::OnBnClickedBtnKill)
END_MESSAGE_MAP()


// CsrcKillPidDlg message handlers

BOOL CsrcKillPidDlg::OnInitDialog()
{
	CDialogEx::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)
	{
		BOOL bNameValid;
		CString strAboutMenu;
		bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
		ASSERT(bNameValid);
		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

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CsrcKillPidDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialogEx::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 CsrcKillPidDlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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
	{
		CDialogEx::OnPaint();
	}
}

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

void CsrcKillPidDlg::OnBnClickedBtnKill()
{
	BOOL	bRc = FALSE;
	DWORD	dwRc = 0;
	HANDLE	hProcess = NULL;

	UpdateData(TRUE);
	hProcess = ::OpenProcess(PROCESS_ALL_ACCESS, FALSE, m_lPid);
	bRc = ::TerminateProcess(hProcess, dwRc);

	::MessageBox(
		this->m_hWnd,
		bRc ? L"Kill OK\r\n" : L"Kill Failed\r\n", 
		L"Kill Result", 
		MB_OK | MB_ICONINFORMATION); 
}