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Another Process Killing Error Question

LAME-ER asked
Last Modified: 2012-08-13
Hi! I wanted to make a program that closes all other application except itself and the basic system applications (programs). This should work under Windows 98. After visiting a lot of sites that document this kind of things I came up with a code of my own…

#include <windows.h>
#include <tlhelp32.h>
#include <string>


 BOOL CALLBACK TerminateAppEnum( HWND hwnd, LPARAM lParam )
      DWORD dwID;

      GetWindowThreadProcessId(hwnd, &dwID);

      if(dwID == (DWORD)lParam)
       PostMessage(hwnd, WM_DESTROY, 0, 0);
         PostMessage(hwnd, WM_QUIT, 0, 0);

      return TRUE;

GetSystemDirectory(lpBuffer, MAX_PATH);
String sysdir = lpBuffer;
GetWindowsDirectory(lpBuffer, MAX_PATH);
String windir = lpBuffer;
String ppathis;
char *ppath;

  ppathis = windir + "\\EXPLORER.EXE"; //Protected processes!
  ppath = ppathis.c_str();
  std::string strExeToFind1(ppath);
  ppathis = sysdir + "\\KERNEL32.DLL";
  ppath = ppathis.c_str();
  std::string strExeToFind2(ppath);
  ppathis = sysdir + "\\MSGSRV32.EXE";
  ppath = ppathis.c_str();
  std::string strExeToFind3(ppath);
  ppathis = sysdir + "\\MPREXE.EXE";
  ppath = ppathis.c_str();
  std::string strExeToFind4(ppath);
  ppathis = sysdir + "\\SYSTRAY.EXE";
  ppath = ppathis.c_str();
  std::string strExeToFind5(ppath);
  ppathis = sysdir + "\\WMIEXE.EXE";
  ppath = ppathis.c_str();
  std::string strExeToFind6(ppath);

  HANDLE hProcessSnap = 0;
  PROCESSENTRY32 pe32 = {0};
  // Take a snapshot of all processes in the system.
  hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
  pe32.dwSize = sizeof(PROCESSENTRY32);
  // Walk the snapshot of the processes, and for each process,
  if (Process32First(hProcessSnap, &pe32)) {
      do {
            if (pe32.th32ProcessID != GetCurrentProcessId() && strExeToFind1.compare(pe32.szExeFile) && strExeToFind2.compare(pe32.szExeFile) && strExeToFind3.compare(pe32.szExeFile) && strExeToFind4.compare(pe32.szExeFile) && strExeToFind5.compare(pe32.szExeFile) && strExeToFind6.compare(pe32.szExeFile)) { //If it's not listed ...
            EnumWindows((WNDENUMPROC)TerminateAppEnum, (LPARAM) pe32.th32ProcessID);
            HANDLE hProc;
            hProc = OpenProcess(PROCESS_TERMINATE, FALSE, pe32.th32ProcessID);
            if (hProc) {
     } while (Process32Next(hProcessSnap, &pe32));



1. Can anybody optimize this code or even give me a better one ?!
2. The code works, but when I try to run a program after the code has been executed (and all processes have been terminated) I get an Explorer.exe Error (Invalid page fault in module <unknown> … ). I click close, Explorer.exe restarts by itself and then all is well (I only get this once), no matter how many times I try to run my application. Why is that?!!!!! Could this have anything to do with the fact that I am using Norton SystemWorks (because I found out that NPROTECT.EXE can’t be killed).
3. Are there any more “Protected processes” (the processes that my application should not kill) that I must add? Or can I remove some of them?

The point is that the system must not be affected in any way by this operation (the process killing). That means that I should still see the desktop and taskbar. I should still see “Explorer” and “Systray” when I press CTRL+ALT+DEL and no errors like the one I described should appear!
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