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MSDOS befehle auslesen

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WoTaN

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  • "WoTaN" started this thread

Posts: 5

Occupation: Fachinformatiker

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1

Tuesday, December 13th 2005, 8:02pm

MSDOS befehle auslesen

Nabend
ich hab erst letzte woche mit delphi angefangen und muss gestehen ich hab für den anfang gleich n riesen projekt ausgesucht ;(
ich hab schon oft gegoogelt aber nie das richtige gefunden 8o

ich arbeite gerade an einem programm um dos befehle visuell darzustellen..

nur das problem ist wenn die dosanwendung länger braucht um eine *.txt zu erstellen als ich vorgegeben habe gibt es ne dicke fehlermeldung von wegen "auf diese Datei kann nicht zugegriffen werden, da sie von einem programm verwendet wird" (sorry für die schlechte erklärung), ich habe da sleepfunktionen eingebaut sleep(500);

hier nu mal der code

Source code

 
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procedure TForm1.BitBtn2Click(Sender: TObject);
var
  ip:string;
  f:integer;
begin


begin
ProgressBar1.Position:=0;
f:=0;
ip:= inputbox('Trace Route','Geben Sie hier die IP oder die Domain ein','');
  if ip <> '' then
    begin
ShellExecute(0,'open','cmd.exe',pchar('/c tracert -w 150 -h 8 '+ip+' > C:\tracert.it14'),'',sw_hide);
 while f=0 do
 begin
    sleep(250);
    sleep(500);
    sleep(500);
    if FileExists('C:\tracert.it14') then
    ProgressBar1.Position:=15;
    f:=1;
    begin
    sleep(150);
    sleep(500);
    sleep(500);
    ProgressBar1.Position:=30;

    sleep(150);
    sleep(500);
    sleep(500);
    ProgressBar1.Position:=45;

    sleep(150);
    sleep(500);
    sleep(500);
    ProgressBar1.Position:=60;

    sleep(150);
    sleep(500);
    sleep(500);
    ProgressBar1.Position:=75;

    sleep(150);
    sleep(500);
    sleep(500);
    richedit1.lines.loadfromfile('C:\tracert.it14');

    ProgressBar1.Position :=100 ;
    sleep(200);
    ShellExecute(0,'open','cmd.exe','/c del C:\*.it14','',sw_hide);

    end;
 end;


ich hoffe ihr könnt mir helfen :( ?(

*fg* hab ne leichte unordnung in dem code ich weiß :D

This post has been edited 1 times, last edit by "WoTaN" (Dec 13th 2005, 8:03pm)

Ephraim

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Tuesday, December 13th 2005, 8:57pm

Hmmm ... kannst du des net irgendwie so machen, des du mitbekommst wann der Befehl fertig ist?

Ich würde dir empfehlen, dir mal den Code hier anzuschauen
http://www.latiumsoftware.com/en/delphi/00003.php

Und alle fragen mal hier reinzupsoten, da können wir dir sicher dann weiterhelfen. Aber dieser Code ist genau für dein Problem, ... Ne App starten und warten bis Ende.

Ciao Ephraim

Dieser Code und Inhalt sind von der Seite www.latiumsoftware.com,
siehe obiger Link!

Source code

 
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WaitForSingleObject

If we ever need to run an external application and wait until it 
terminates, then we would have to do without ShellExecute and resort
to more basic functions, like CreateProcess, WaitForSingleObject and 
CloseHandle.

uses Forms, Windows;

procedure TForm1.Button1Click(Sender: TObject);
var
  proc_info: TProcessInformation;
  startinfo: TStartupInfo;
  ExitCode: longword;
begin
  // Initialize the structures
  FillChar(proc_info, sizeof(TProcessInformation), 0);
  FillChar(startinfo, sizeof(TStartupInfo), 0);
  startinfo.cb := sizeof(TStartupInfo);

  // Attempts to create the process
  if CreateProcess('c:\windows\notepad.exe', nil, nil,
      nil, false, NORMAL_PRIORITY_CLASS, nil, nil,
       startinfo, proc_info) <> False then begin
    // The process has been successfully created
    // No let's wait till it ends...
    WaitForSingleObject(proc_info.hProcess, INFINITE);
    // Process has finished. Now we should close it.
    GetExitCodeProcess(proc_info.hProcess, ExitCode);  // Optional
    CloseHandle(proc_info.hThread);
    CloseHandle(proc_info.hProcess);
    Application.MessageBox(
      PChar(Format('Notepad finished! (Exit code=%d)', [ExitCode])),
      'Info', MB_ICONINFORMATION);
  end else begin
    // Failure creating the process
    Application.MessageBox('Couldn''t execute the '
      + 'application', 'Error', MB_ICONEXCLAMATION);
  end;//if
end;

Problems

We have experienced problems with WaitForSingleObject
in combination with certain applications and we had to finish them with
the task manager. Other applications apparently fail to finish correctly 
and WaitForSingleObject never returns. Appart from that, an application 
does not respond to events while it waits and this means that for 
example the forms won't repaint...

A possible workaround to these problems is checking the status of the 
launched application (calling GetExitCodeProcess) at intervals (in a timer 
event).

uses Forms, Windows, StdCtrls, ExtCtrls;

type
TForm1 = class(TForm)
  btnExecute: TButton;
  btnCancel: TButton;
  Timer1: TTimer;
  procedure FormCreate(Sender: TObject);
  procedure btnExecuteClick(Sender: TObject);
  procedure Timer1Timer(Sender: TObject);
  procedure btnCancelClick(Sender: TObject);
  procedure FormCloseQuery(Sender: TObject;
    var CanClose: Boolean);
private
  proc_info: TProcessInformation;
  startinfo: TStartupInfo;
  ExitCode: LongWord;
end;

implementation

procedure TForm1.FormCreate(Sender: TObject);
begin
  btnCancel.Enabled := False;
  Timer1.Enabled := False;
  Timer1.Interval := 200;
end;

procedure TForm1.btnExecuteClick(Sender: TObject);
begin
  FillChar(proc_info, sizeof(TProcessInformation), 0);
  FillChar(startinfo, sizeof(TStartupInfo), 0);
  startinfo.cb := sizeof(TStartupInfo);
  if CreateProcess(nil, 'c:\windows\notepad.exe', nil,
      nil, false, CREATE_DEFAULT_ERROR_MODE
      + NORMAL_PRIORITY_CLASS, nil, nil, startinfo,
      proc_info) then begin
    btnExecute.Enabled := False;
    btnCancel.Enabled := True;
    Timer1.Enabled := True;
  end else begin
    CloseHandle(proc_info.hProcess);
    Application.MessageBox('Couldn''t execute the '
      + 'application', 'Error', MB_ICONEXCLAMATION);
  end;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Timer1.Enabled := False;
  if GetExitCodeProcess(proc_info.hProcess, ExitCode)
  then
    if ExitCode = STILL_ACTIVE then
      Timer1.Enabled := True
    else begin
      btnCancel.Enabled := False;
      btnExecute.Enabled := True;
      CloseHandle(proc_info.hProcess);
    end
  else begin
    btnCancel.Enabled := False;
    btnExecute.Enabled := True;
    TerminateProcess(proc_info.hProcess, 0);
    CloseHandle(proc_info.hProcess);
  end;
end;

procedure TForm1.btnCancelClick(Sender: TObject);
begin
  Timer1.Enabled := False;
  if Application.MessageBox('You should try to finish'
  + ' the application normally.'#13#13'¿Terminate it '
  + 'anyway?', 'Warning', MB_YESNO + MB_DEFBUTTON2 +
  MB_ICONQUESTION + MB_TASKMODAL) = ID_YES then begin
    TerminateProcess(proc_info.hProcess, 0);
    CloseHandle(proc_info.hProcess);
    btnCancel.Enabled := False;
    btnExecute.Enabled := True;
  end else begin
    Timer1.Enabled := True;
  end;
end;

procedure TForm1.FormCloseQuery(Sender: TObject;
  var CanClose: Boolean);
begin
  if btnCancel.Enabled then begin
    btnCancelClick(Sender);
    if btnCancel.Enabled then CanClose := False;
  end;
end;

If we ever need to run an external application and wait until it 
terminates, then we would have to do without ShellExecute and resort 
to more basic functions, like CreateProcess, WaitForSingleObject and 
CloseHandle.

uses Forms, Windows;

procedure TForm1.Button1Click(Sender: TObject);
var
  proc_info: TProcessInformation;
  startinfo: TStartupInfo;
  ExitCode: longword;
begin
  // Initialize the structures
  FillChar(proc_info, sizeof(TProcessInformation), 0);
  FillChar(startinfo, sizeof(TStartupInfo), 0);
  startinfo.cb := sizeof(TStartupInfo);

  // Attempts to create the process
  if CreateProcess('c:\windows\notepad.exe', nil, nil,
      nil, false, NORMAL_PRIORITY_CLASS, nil, nil,
       startinfo, proc_info) <> False then begin
    // The process has been successfully created
    // No let's wait till it ends...
    WaitForSingleObject(proc_info.hProcess, INFINITE);
    // Process has finished. Now we should close it.
    GetExitCodeProcess(proc_info.hProcess, ExitCode);  // Optional
    CloseHandle(proc_info.hThread);
    CloseHandle(proc_info.hProcess);
    Application.MessageBox(
      PChar(Format('Notepad finished! (Exit code=%d)', [ExitCode])),
      'Info', MB_ICONINFORMATION);
  end else begin
    // Failure creating the process
    Application.MessageBox('Couldn''t execute the '
      + 'application', 'Error', MB_ICONEXCLAMATION);
  end;//if
end;

Problems

We have experienced problems with WaitForSingleObject in combination
with certain applications and we had to finish them with the task 
manager. Other applications apparently fail to finish correctly and 
WaitForSingleObject never returns. Appart from that, an application 
does not respond to events while it waits and this means that for 
example the forms won't repaint...

A possible workaround to these problems is checking the status of the 
launched application (calling GetExitCodeProcess) at intervals (in a timer 
event).

uses Forms, Windows, StdCtrls, ExtCtrls;

type
TForm1 = class(TForm)
  btnExecute: TButton;
  btnCancel: TButton;
  Timer1: TTimer;
  procedure FormCreate(Sender: TObject);
  procedure btnExecuteClick(Sender: TObject);
  procedure Timer1Timer(Sender: TObject);
  procedure btnCancelClick(Sender: TObject);
  procedure FormCloseQuery(Sender: TObject;
    var CanClose: Boolean);
private
  proc_info: TProcessInformation;
  startinfo: TStartupInfo;
  ExitCode: LongWord;
end;

implementation

procedure TForm1.FormCreate(Sender: TObject);
begin
  btnCancel.Enabled := False;
  Timer1.Enabled := False;
  Timer1.Interval := 200;
end;

procedure TForm1.btnExecuteClick(Sender: TObject);
begin
  FillChar(proc_info, sizeof(TProcessInformation), 0);
  FillChar(startinfo, sizeof(TStartupInfo), 0);
  startinfo.cb := sizeof(TStartupInfo);
  if CreateProcess(nil, 'c:\windows\notepad.exe', nil,
      nil, false, CREATE_DEFAULT_ERROR_MODE
      + NORMAL_PRIORITY_CLASS, nil, nil, startinfo,
      proc_info) then begin
    btnExecute.Enabled := False;
    btnCancel.Enabled := True;
    Timer1.Enabled := True;
  end else begin
    CloseHandle(proc_info.hProcess);
    Application.MessageBox('Couldn''t execute the '
      + 'application', 'Error', MB_ICONEXCLAMATION);
  end;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Timer1.Enabled := False;
  if GetExitCodeProcess(proc_info.hProcess, ExitCode)
  then
    if ExitCode = STILL_ACTIVE then
      Timer1.Enabled := True
    else begin
      btnCancel.Enabled := False;
      btnExecute.Enabled := True;
      CloseHandle(proc_info.hProcess);
    end
  else begin
    btnCancel.Enabled := False;
    btnExecute.Enabled := True;
    TerminateProcess(proc_info.hProcess, 0);
    CloseHandle(proc_info.hProcess);
  end;
end;

procedure TForm1.btnCancelClick(Sender: TObject);
begin
  Timer1.Enabled := False;
  if Application.MessageBox('You should try to finish'
  + ' the application normally.'#13#13'¿Terminate it '
  + 'anyway?', 'Warning', MB_YESNO + MB_DEFBUTTON2 +
  MB_ICONQUESTION + MB_TASKMODAL) = ID_YES then begin
    TerminateProcess(proc_info.hProcess, 0);
    CloseHandle(proc_info.hProcess);
    btnCancel.Enabled := False;
    btnExecute.Enabled := True;
  end else begin
    Timer1.Enabled := True;
  end;
end;

procedure TForm1.FormCloseQuery(Sender: TObject;
  var CanClose: Boolean);
begin
  if btnCancel.Enabled then begin
    btnCancelClick(Sender);
    if btnCancel.Enabled then CanClose := False;
  end;
end;
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WoTaN

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  • "WoTaN" started this thread

Posts: 5

Occupation: Fachinformatiker

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3

Tuesday, December 13th 2005, 10:09pm

hmm ich probiere es mal aus.. aber die richtung ist schon wieder neuland.. das einzigste wa ich bisher gemacht habe ist die ShellAPI

wenn du mal n beispiel willst kann ich dir mal das compillierte geben .. es funktioniert aber hat eben diese macken mit dem dateizugriff

WoTaN

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  • "WoTaN" started this thread

Posts: 5

Occupation: Fachinformatiker

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4

Saturday, December 24th 2005, 1:37pm

so ich habe mein tool einigermaßen fertig wenn ihr wollt könnt ihr es euch mal anschauen

http://rapidshare.de/files/9745509/it14nt_setup.zip.html

MfG WoTaN

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