Run an app, wait for processes, continue ...

Barry,

Do I save this as another unit file and add it to my project?  or do I rename my unit file to that of this one and paste this code into it?  I ask because I tryed replacing my unit1 code with this and renaming it, but with not success.  Please explain it to me like I know nothing of delphi because as I said it is very new to me and nothing is just below where I stand :)

Hi,
i added the code to a new project and worked ok,i changed some lines ,and using notepad for the demo,the app starts notepad then waits for notpad to finish before it continues:
put a button on your form then click it to get procedure then paste in the relevent code(if on a new project then paste in everything below {$R *.DFM} line and make sure the uses section contains at least the same units as the unit below:

unit Unit1;

interface

uses
   Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls,
  ExtCtrls, ComCtrls;
type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

const unitName = 'runThread_.';

type TRunThread = class(TThread)
  private
    processHandle : cardinal;
    processReady  : boolean;
    waitingThread : cardinal;
    procedure Execute; override;
  end;

procedure TRunThread.Execute;
begin
  WaitForSingleObject(processHandle,INFINITE);
  processReady:=true;
  PostThreadMessage(waitingThread,WM_NULL,0,0);
end;

procedure TForm1.Button1Click(Sender: TObject);
var si  : TStartupInfo;
    pi  : TProcessInformation;
    dw1 : dword;
begin
  enabled:=false;
  caption:='start copy...';
  ZeroMemory(@si,sizeOf(si)); si.cb:=sizeOf(si);
  si.dwFlags:=STARTF_USESHOWWINDOW; si.wShowWindow:=SW_NORMAL;
  if CreateProcess(nil,'c:\windows\notepad.exe',nil,nil,false,0,nil,nil,si,pi) then begin
    caption:='notepad started...';
    with TRunThread.Create(true) do
      try
        processHandle:=pi.hProcess;
        processReady:=false;
        waitingThread:=GetCurrentThreadID;
        caption:='wait for notepad to finish...';
        Resume;
        repeat
          Application.HandleMessage;
        until Application.Terminated or processReady;
        caption:='notepad closed...';
      finally Free end;
    GetExitCodeProcess(pi.hProcess,dw1);
    CloseHandle(pi.hThread);
    CloseHandle(pi.hProcess);
    caption:='ready... (exitCode='+IntToStr(dw1)+')';
  end else caption:='could not start notepad...';
  enabled:=true;
end;

end.

Adjusted points to 100

Barry,

The code seems to compile fine, but when I click Button1, nothing happens ...  I'm using Delphi 5.0 if that makes a difference.

?

hi fibdev,
,nothing happens? that strange,is the path correct to notepad?
make sure this line si.wShowWindow:=SW_NORMAL;
does not say
si.wShowWindow:=SW_HIDE;
else you wont see anything..does notepad even start?
 
if you dont mind you can build a new project and email it to me so i can check the code is ok and test and send back if i make it work:

BorgsAssimilate@Aol.Com

cheers Barry

hi,
just thinking i may not be able to open your d5 project (i use d4) so
 if you like i just send you a project
that i made to test this as d5 is backwards compatible..
i had madshi test the code in d5 and he says its fine so leave your email addess and i send the project to test out.the only thing that may be different is the path to notepad ,everything else is same for d4/d5 .

cheers Barry

vb@fibdev.com

Thanks Barry

Thanks Barry,

I'll be sure to check out your site.

Gabe

Thanks Barry,

I'll be sure to check out your site.

Gabe

ok but it hasnt been updated for a long time
im too busy building the localbee one.

happy coding :-)