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How to use!

Ned a Demo Project to understand this code!

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unit ProcessViewer;

interface

uses
      Windows, Dialogs, SysUtils, Classes, ShellAPI, TLHelp32, Forms;

const
      SleepForReCheck=5000;

type TProcessInfo=record
      FileName: string;
      Caption: string;
      Visible: boolean;
      Handle: DWord;
      PClass: string;
      ThreadID: DWord;
      PID: DWord;
end;


var
      DateiList,CaptionList,VisibleList,HandleList,ClassList,ThreadIdList,PIDList: TStringList;
      ProcessInfo: array of TProcessInfo;

function EnumWindowsProc(hWnd: HWND; lParam: LPARAM): Bool; stdcall;
function KillProcessByPID(PID: DWord): boolean;
function KillProcessByFileName(FileName: string; KillAll: boolean): boolean;
procedure GetProcessList;
function GetFileNameFromHandle(Handle: hwnd):string;
function IsFileActive(FileName: String): boolean;

implementation

procedure GetProcessList;
var
      i,Laenge: integer;
begin
DateiList.Clear;
HandleList.Clear;
ClassList.Clear;
CaptionList.Clear;
VisibleList.Clear;
ThreadIdList.Clear;
PIDList.Clear;
EnumWindows(@EnumWindowsProc, 0);
Laenge:=DateiList.Count;
SetLength(ProcessInfo,Laenge);
for i:=0 to Laenge-1 do
begin
      DateiList[i]:=UpperCase(DateiList[i]);
      with ProcessInfo[i] do
      begin
            FileName:=DateiList[i];
            Caption:=CaptionList[i];
            Visible:=VisibleList[i]='1';
            Handle:=StrToInt64(HandleList[i]);
            PClass:=ClassList[i];
            ThreadID:=StrToInt64(ThreadIdList[i]);
            PID:=StrToInt64(PIDList[i]);
      end;
end;
end;

function IsFileActive(FileName: String): boolean;
var
      i: integer;
begin
result:=false;
if FileName='' then exit;
GetProcessList;
FileName:=UpperCase(ExtractFileName(FileName));
for i:=0 to Length(ProcessInfo)-1 do
begin
      if Pos(FileName,ProcessInfo[i].FileName)>0 then
      begin
            result:=true;
            break;
      end;
end;
end;

function GetFileNameFromHandle(Handle: hwnd):string;
var
      PID: DWord;
      aSnapShotHandle: THandle;
      ContinueLoop: Boolean;
      aProcessEntry32: TProcessEntry32;
begin
GetWindowThreadProcessID(Handle, @PID);
aSnapShotHandle := CreateToolHelp32SnapShot(TH32CS_SNAPPROCESS, 0);
aProcessEntry32.dwSize := SizeOf(aProcessEntry32);
ContinueLoop := Process32First(aSnapShotHandle, aProcessEntry32);
while Integer(ContinueLoop) <> 0 do
begin
      if aProcessEntry32.th32ProcessID = PID then
      begin
            result:=aProcessEntry32.szExeFile;
            break;
      end;
      ContinueLoop := Process32Next(aSnapShotHandle, aProcessEntry32);
end;
CloseHandle(aSnapShotHandle);
end;

function EnumWindowsProc(hWnd: HWND; lParam: LPARAM): Bool;
var
      Capt,Cla: array[0..255] of char;
      Datei: string;
      ident: dword;
begin
GetWindowText(hWnd, Capt, 255);
GetClassName(hwnd,Cla,255);
ThreadIdList.Add(IntToStr(GetWindowThreadProcessId(hwnd,nil)));
Datei:=GetFileNameFromhandle(hwnd);
DateiList.Add(Datei);
HandleList.Add(IntToStr(HWnd));
if IsWindowVisible(HWnd) then VisibleList.Add('1') else VisibleList.Add('0');
ClassList.Add(Cla);
CaptionList.Add(Capt);
GetWindowThreadProcessId(StrToInt(HandleList[HandleList.Count-1]),@ident);
PIDList.Add(IntToStr(ident));
Result:=true;
end;

function KillProcessByPID(PID : DWord): boolean;
var
      myhandle : THandle;
      i: integer;
begin
myhandle := OpenProcess(PROCESS_TERMINATE, False, PID);
TerminateProcess(myhandle, 0);
for i:=0 to SleepForReCheck do Application.ProcessMessages; //Genug Zeit geben
GetProcessList;
Result:=PIDList.IndexOf(IntToStr(PID))=-1;
end;

function KillProcessByFileName(FileName: string; KillAll: boolean): boolean;
var
      i: integer;
      FileFound: boolean;
begin
result:=false;
if FileName='' then exit;
FileName:=UpperCase(ExtractFileName(FileName));
result:=true;
GetProcessList;
if KillAll then
begin
      //Kill all
      FileFound:=false;
      repeat
            GetProcessList;
            FileFound:=false;
            for i:=0 to DateiList.Count-1 do
            begin
                  if Pos(Filename,DateiList[i])>0 then
                  begin
                        FileFound:=true;
                        break;
                  end;
            end;
            if i<DateiList.Count then
            begin
                  if not KillProcessByPID(StrToInt64(PIDList[i])) then
                  begin
                        result:=false;
                        exit;
                  end;
            end;
      until not FileFound;
end else
begin
      //Kill one
      for i:=0 to DateiList.Count-1 do
      begin
            if Pos(Filename,DateiList[i])>0 then break;
      end;
      if i<DateiList.Count then
      begin
            if not KillProcessByPID(StrToInt64(PIDList[i])) then
            begin
                  result:=false;
                  exit;
            end;
      end;
end;
end;

initialization
DateiList:=TStringList.Create;
HandleList:=TStringList.Create;
ClassList:=TStringList.Create;
CaptionList:=TStringList.Create;
VisibleList:=TStringList.Create;
ThreadIdList:=TStringList.Create;
PIDList:=TStringList.Create;

finalization
DateiList.Free;
HandleList.Free;
ClassList.Free;
CaptionList.Free;
VisibleList.Free;
ThreadIdList.Free;
PIDList.Free;

end.
Avatar of Fraction
Fraction

Doesn't this look like a demo project? What exactly do you not understand?
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ASKER

How to use it and list it in difrent(Name, Caption, Path) columns in a ListView

Im just a beginer + Im a litle stupid
ASKER CERTIFIED SOLUTION
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Fraction

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PS! You need to have the ProcessViewer unit in the same directory as your new application.
PS 2! You might want to clear listview before you update it:

procedure TForm1.GetListClick(Sender: TObject);
var
  s: string;
  i: integer;
begin
  GetProcessList;
  ListView.Items.BeginUpdate;
  ListView.Items.Clear;
  for i:=0 to Length(ProcessInfo)-1 do begin
    with ListView.Items.Add do begin
      Caption := ProcessInfo[i].FileName;
      SubItems.Add(ProcessInfo[i].Caption);
      if ProcessInfo[i].Visible then s := 'true' else s := 'false';
      SubItems.Add(s);
      SubItems.Add(IntToStr(ProcessInfo[i].Handle));
      SubItems.Add(ProcessInfo[i].PClass);
      SubItems.Add(IntToStr(ProcessInfo[i].ThreadID));
      SubItems.Add(IntToStr(ProcessInfo[i].PID));
    end;
  end;
  ListView.Items.EndUpdate;
end;
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ASKER

Is it possible to just get the short name of the file and only show the main process? not ther windows...and then visible or not?
Short name? If you want to extract only the filename use the ExtractFileName function i.e:
Caption := ExtractFileName(ProcessInfo[i].FileName);

If you want the short (DOS) alias then follow this link:
https://www.experts-exchange.com/jsp/qManageQuestion.jsp?ta=delphi&qid=20091847

I think you can check the PClass in ProcessInfo for "TApplication" to get the main processes i.e:

  if LowerCase(ProcessInfo[i].PClass) = 'tapplication' then
  with ListView.Items.Add do begin
    Caption := ExtractFileName(ProcessInfo[i].FileName);
    etc...
  end;
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ASKER

the example with 'tapplication' just showed 3 .exe files not the main .dll and the other progs that was running.

Any idea?
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ASKER

Any one? also not included....how to kill the file
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ASKER

If u could show me how to do the rest I can give you more points