uses TLHelp32,PsAPI;

(1)显示进程列表：
procedure TForm1.Button2Click(Sender: TObject);
var lppe: TProcessEntry32;
    found : boolean;
    Hand : THandle;
    P:DWORD;
    s:string;
begin
  ListBox1.Items.Clear ;
  Hand := CreateToolhelp32Snapshot(TH32CS_SNAPALL,0);
  found := Process32First(Hand,lppe);
  while found do
  begin
    s := StrPas(lppe.szExeFile);
    if lppe.th32ProcessID>0 then
      p := lppe.th32ProcessID
    else
      p := 0;
    ListBox1.Items.AddObject(s,pointer(p));//列出所有进程。
    found := Process32Next(Hand,lppe);
  end;
end;

(2)杀死某进程：
procedure TForm1.Button3Click(Sender: TObject);
var lppe: TProcessEntry32;
    found : boolean;
    Hand : THandle;
    P:DWORD;
    sExeFile,sSelect:string;
    killed:boolean;
begin
  p :=DWORD(ListBox1.Items.Objects[ListBox1.itemindex]);
  if P<>0 then
  begin
    killed := TerminateProcess(OpenProcess(PROCESS_TERMINATE,False,P),$FFFFFFFF);
    if not killed then
       messagebox(self.handle,pchar(sExeFile+'无法杀死！'),'提示',MB_OK or MB_ICONWARNING)
    else
      ListBox1.Items.Delete(ListBox1.ItemIndex);
  end;
end;

(3)取得某进程EXE路径：
procedure TForm1.Button8Click(Sender: TObject);  //uses  PSAPI;
var
  h:THandle;  fileName:string; iLen:integer; hMod:HMODULE;cbNeeded,p:DWORD;
begin
  p :=DWORD(ListBox1.Items.Objects[ListBox1.itemindex]);
  h  :=  OpenProcess(PROCESS_ALL_ACCESS,  false,  p);      //p  为 进程ID
  if  h  >  0  then
  begin
    if  EnumProcessModules(  h,  @hMod,  sizeof(hMod),  cbNeeded)  then
    begin
       SetLength(fileName,  MAX_PATH);
       iLen  :=  GetModuleFileNameEx(h,  hMod,  PCHAR(fileName),  MAX_PATH);
       if  iLen  <>  0  then
       begin
         SetLength(fileName,  StrLen(PCHAR(fileName)));
         ShowMessage(fileName);
       end;
    end;
    CloseHandle(h);
  end;
end;

(4)取得窗口列表
begin
   ListBox1.Items.Clear ;
   EnumWindows(@EnumWindowsProc, 0);
end;

(5)杀死窗口进程
procedure TForm1.Button6Click(Sender: TObject);
var
  H:THandle;
  P:DWORD;
  s:string;
  killed:boolean;
begin
  s := ListBox1.Items[ListBox1.ItemIndex];
  H:=FindWindow(nil,pchar(s));
  if H<>0 then
  begin
    GetWindowThreadProcessId(H,@P);
    if P<>0 then
      killed:=TerminateProcess(OpenProcess(PROCESS_TERMINATE,False,P),$FFFFFFFF);
    if not killed then
       messagebox(self.handle,pchar(s+'无法杀死！'),'提示',MB_OK or MB_ICONWARNING)
    else
      ListBox1.Items.Delete(ListBox1.ItemIndex);
  end;
end;

(6)取得窗口进程路径：
procedure TForm1.Button9Click(Sender: TObject);
var
  H:THandle;  P,cbNeeded: DWORD;  s,fileName:string;
  iLen:integer;   hMod:HMODULE;
begin
  s := ListBox1.Items[ListBox1.ItemIndex];
  H:=FindWindow(nil,pchar(s));

  if H<>0 then
  begin
    GetWindowThreadProcessId(H,@P);
    if P<>0 then
    begin
       h  :=  OpenProcess(PROCESS_ALL_ACCESS,  false,  p);      //p  为 进程ID
       if  h  >  0  then
       begin
         if  EnumProcessModules(  h,  @hMod,  sizeof(hMod),  cbNeeded)  then
         begin
           SetLength(fileName,  MAX_PATH);
           iLen  :=  GetModuleFileNameEx(h,  hMod,  PCHAR(fileName),  MAX_PATH);
           if  iLen  <>  0  then
           begin
                   SetLength(fileName,  StrLen(PCHAR(fileName)));
                   ShowMessage(fileName);
           end;
         end;
         CloseHandle(h);
       end;
    end;
  end;
end;

(7)文件属性：
procedure TForm1.Button1Click(Sender: TObject);
var
  SR: TSearchRec;
  V1, V2, V3, V4: integer  ;
const
  dtFmt:string = 'YYYY-MM-DD HH:NN:SS';
begin
  // ============== 方法一 ==================== //
  if FindFirst(sFileName, faAnyFile, SR) = 0 then
  begin
    Edit1.Text := intToStr(SR.Attr);   //文件属性
    Edit2.Text := intToStr(SR.Size);   //文件大小
    Edit3.Text := FormatDateTime(dtFmt,CovFileDate(SR.FindData.ftCreationTime));   //创建时间
    Edit4.Text := FormatDateTime(dtFmt,CovFileDate(SR.FindData.ftLastWriteTime));  //最后修改时间
    Edit5.Text := FormatDateTime(dtFmt,CovFileDate(SR.FindData.ftLastAccessTime)); //最后访问时间

    if SR.Attr and faHidden <> 0 then
      FileSetAttr(sFileName, SR.Attr-faHidden);

    FindClose(SR);
  end;

  if GetFileVersion(sFileName,V1, V2, V3, V4) then
     Edit7.Text := intToStr(v1)+'.'+intToStr(v2)+'.'+intToStr(v3)+'.'+intToStr(v4);

  // ============== 方法二 ==================== //
  {
  var
  Attrs: Word;
  f: file of Byte;   // 文件大小 必须要 定义为" file of byte" ,这样才能取出 bytes
  size: Longint;

  //文件属性
  Attrs := FileGetAttr(sFileName);

  Edit1.Text := intToStr(Attrs);

  //文件大小
  AssignFile(f, OpenDialog1.FileName);
  Reset(f);
  try
    AssignFile(f, sFileName);
    Reset(f);
    size := FileSize(f);
    Edit2.Text := intToStr(size);
  finally
    CloseFile(f);
  end;
  }
end;

(8)判断程序是否在运行：
procedure TForm1.Button5Click(Sender: TObject);
var PrevInstHandle:Thandle;
  AppTitle:pchar;
begin
 AppTitle := pchar('test');
 PrevInstHandle := FindWindow(nil, AppTitle);
    if PrevInstHandle <> 0 then begin
      if IsIconic(PrevInstHandle) then
        ShowWindow(PrevInstHandle, SW_RESTORE)
      else
        BringWindowToTop(PrevInstHandle);
      SetForegroundWindow(PrevInstHandle);
    end;
end;