Figura 1. Programa em Execução.

Componentes necessários:
   1 Um TListBox;
   2 Dois TButtons;

Crie uma nova aplicação (File -> New -> Application) e adicione ao formulário os componentes (1 listbox e 2 botões) - todos da palheta Stantard.

Declare na cláusula Uses do form as 2 units: TLHelp32, PsAPI;

Agora vamos aos códigos:

Adicione logo abaixo da cláusula implementation as funções abaixo:

function TerminateProcesso(sFile: string): Bool;
var
  verSystem: TOSVersionInfo;
  hdlSnap,hdlProcess: THandle;
  bPath,bLoop: Bool;
  peEntry: TProcessEntry32;
  arrPid: array [0..1023] of DWord;
  iC: DWord;
  k,iCount: Integer;
  arrModul: array [0..299] of Char;
  hdlModul: HMODULE;
begin
  result:=false;
  if ExtractFileName(sFile)=sFile then
    bPath:=false
  else
    bPath:=true;
  verSystem.dwOSVersionInfoSize:=SizeOf(TOSVersionInfo);
  GetVersionEx(verSystem);
  if verSystem.dwPlatformId=VER_PLATFORM_WIN32_WINDOWS then
  begin
    hdlSnap:=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
    peEntry.dwSize:=Sizeof(peEntry);
    bLoop:=Process32First(hdlSnap,peEntry);
    while integer(bLoop)<>0 do
    begin
      if bPath then
      begin
        if CompareText(peEntry.szExeFile,sFile)=0 then
        begin
          TerminateProcess(OpenProcess(PROCESS_TERMINATE,false,peEntry.th32ProcessID) ,0);
          result:=true;
        end;
      end
      else
      begin
        if CompareText(ExtractFileName(peEntry.szExeFile),sFile)=0 then
        begin
          TerminateProcess(OpenProcess(PROCESS_TERMINATE,false,peEntry.th32ProcessID) ,0);
          result:=true;
        end;
      end;
      bLoop:=Process32Next(hdlSnap,peEntry);
    end;
    CloseHandle(hdlSnap);
  end
  else
    if verSystem.dwPlatformId=VER_PLATFORM_WIN32_NT then
    begin
      EnumProcesses(@arrPid,SizeOf(arrPid),iC);
      iCount:=iC div SizeOf(DWORD);
      for k:=0 to Pred(iCount) do
      begin
        hdlProcess:=OpenProcess(PROCESS_QUERY_INFORMATION or PROCESS_VM_READ,false,arrPid [k]);
        if (hdlProcess<>0) then
        begin
          EnumProcessModules(hdlProcess,@hdlModul,SizeOf(hdlModul),iC);
          GetModuleFilenameEx(hdlProcess,hdlModul,arrModul,SizeOf(arrModul));
          if bPath then
          begin
            if CompareText(arrModul,sFile)=0 then
            begin
              TerminateProcess(OpenProcess(PROCESS_TERMINATE or PROCESS_QUERY_INFORMATION,False,arrPid [k]), 0);
              result:=true;
            end;
          end
          else
          begin
            if CompareText(ExtractFileName(arrModul),sFile)=0 then
            begin
              TerminateProcess(OpenProcess(PROCESS_TERMINATE or PROCESS_QUERY_INFORMATION,False,arrPid [k]), 0);
              result:=true;
            end;
          end;
          CloseHandle(hdlProcess);
        end;
      end;
    end;
end;

procedure ListaProcesso(List: TStrings);
var
  ProcEntry: TProcessEntry32;
  Hnd: THandle;
  Fnd: Boolean;
begin
  List.Clear;
  Hnd := CreateToolhelp32Snapshot(TH32CS_SNAPALL, 0);
  if Hnd <> -1 then
  begin
    ProcEntry.dwSize := SizeOf(TProcessEntry32);
    Fnd := Process32First(Hnd, ProcEntry);
    while Fnd do
    begin
      List.Add(ProcEntry.szExeFile);
      Fnd := Process32Next(Hnd, ProcEntry);
    end;
    CloseHandle(Hnd);
  end;
end;

Agora só resta programar o evento onclick dos botões. No primeiro, coloque:

procedure TForm1.Button1Click(Sender: TObject);
begin
  ListaProcesso(ListBox1.items);
end;

E no evento onClick do segundo, coloque:

procedure TForm1.Button2Click(Sender: TObject);
begin
  TerminateProcesso(ListBox1.Items.Strings[ListBox1.itemindex]);
  Button1Click(self);
end;

Abraços...

Clique aqui para fazer o download do exemplo

Gustavo Frassini
Contato: gustavocco@yahoo.com.br  ou gustavo@topsystem.com.br