用VisualC 干干净净地清除进程(2)

2008-04-09 04:10:36来源:互联网 阅读 ()

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// CFindKillProcess - to find/kill a process by module name.
//
CFindKillProcess::CFindKillProcess()
{}

CFindKillProcess::~CFindKillProcess()
{}

//////////////////
// Search for process whose module name matches parameter.
// Finds "foo" or "foo.exe"
DWORD CFindKillProcess::FindProcess(LPCTSTR modname, BOOL bAddExe)
{
 CProcessIterator itp;
 for (DWORD pid=itp.First(); pid; pid=itp.Next()) {
  TCHAR name[_MAX_PATH];
  CProcessModuleIterator itm(pid);
  HMODULE hModule = itm.First(); // .EXE
  if (hModule) {
   GetModuleBaseName(itm.GetProcessHandle(),hModule, name, _MAX_PATH);
   string sModName = modname;
   if (strcmpi(sModName.c_str(),name)==0)
    return pid;
   sModName = ".exe";
   if (bAddExe && strcmpi(sModName.c_str(),name)==0)
    return pid;
  }
 }
 return 0;
}

//////////////////
// Kill a process cleanly: Close main windows and wait.
// bZap=TRUE to force kill.
BOOL CFindKillProcess::KillProcess(DWORD pid, BOOL bZap)
{
 CMainWindowIterator itw(pid);
 for (HWND hwnd=itw.First(); hwnd; hwnd=itw.Next()) {
  DWORD bOKToKill = FALSE;
  SendMessageTimeout(hwnd, WM_QUERYENDSESSION, 0, 0,
   SMTO_ABORTIFHUNG|SMTO_NOTIMEOUTIFNOTHUNG,100, &bOKToKill);
  if (!bOKToKill)
   return FALSE; // window doesn't want to die: abort
  PostMessage(hwnd, WM_CLOSE, 0, 0);
 }
 // I've closed the main windows; now wait for process to die.
 BOOL bKilled = TRUE;
 HANDLE hp=OpenProcess(SYNCHRONIZE|PROCESS_TERMINATE,FALSE,pid);
 if (hp) {
  if (WaitForSingleObject(hp, 5000) != WAIT_OBJECT_0) {
   if (bZap) { // didn't die: force kill it if zap requested
    TerminateProcess(hp,0);
   } else {
    bKilled = FALSE;
   }
  }
  CloseHandle(hp);
 }
 return bKilled;
}

//////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "EnumProc.h"
#define tpf _tprintf // to save typing
typedef list<string> CStringList; // like MFC, but with STL
// pre-declare functions
int help();
// check for switch: / or -
inline BOOL isswitch(TCHAR c) { return c==L'/' || c==L'-'; }

int main(int argc, TCHAR* argv[], TCHAR* envp[])
{
 CStringList cmdargs; // command-line args (processes to kill)
 BOOL bDisplayOnly=FALSE; // don't kill, just show results
 BOOL bQuiet=FALSE; // suppress error messages
 BOOL bZap=FALSE; // force-kill process
 // Parse command line. Switches can come in any order.
 for (int i=1; i<argc; i ) {
  if (isswitch(argv[i][0])) {
   for (UINT j=1; j<strlen(argv[i]); j ) {
    switch(tolower(argv[i][j])) {
     case '?': help(); return 0;
     case 'n': bDisplayOnly=TRUE; break;
     case 'q': bQuiet=TRUE; break;
     case 'z': bZap=TRUE; break;
     default:
      return help();
    }
   }
  } else {
   cmdargs.push_back(argv[i]); // got a non-switch arg: add to list
  }
 }
 if (cmdargs.size()<=0)
  help();
 // Now iterate args (module names), killing each one
 CStringList::iterator it;
 for (it=cmdargs.begin(); it!=cmdargs.end(); it ) {
  CFindKillProcess fkp;
  DWORD pid = fkp.FindProcess(it->c_str());
  if (pid) {
   if (bDisplayOnly) {
    tpf(_T("Kill process %d(0xx)\n"),pid,pid);
   } else {
    fkp.KillProcess(pid, bZap);
   }
  } else if (!bQuiet) {
   tpf(_T("Error: Can't find process '%s'.\n"),it->c_str());
  }
 }
 return 0;
}

int help()
{
 tpf(_T("kp: Kill process from command line.\n"));
 tpf(_T(" Copyright 2002 Paul DiLascia.\n\n"));
 tpf(_T(" kp [/nqz?] modname1 [modname2....]\n"));
 tpf(_T(" where modnameN is a module name; eg foo or foo.exe\n"));
 tpf(_T("\n"));
 tpf(_T(" /n(othing) don't kill, just show results\n"));
 tpf(_T(" /q(uiet) don't show errors\n"));
 tpf(_T(" /z(ap) force kill (ignore WM_QUERYENDSESSION)\n"));
 tpf(_T("\n"));
 return 0;
}
  四、小结

  本实例通过介绍CfindKillProcess类探讨了在Windows2000下彻底消除进程的方法,虽然该程序只能在Windows2000环境下编译运行,但是该方法对Windows98下进程的控制也是有借鉴意义的。

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