Linux and TProcess
lazarus / 8-Other

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Sora-Kun · 2010-06-19 14:45

Hello,
I add the command 'python' to the Process, but when I execute it,
nothing happened, python is installed, and when I type python on my
terminal, it starts python. Any body knows what it doesn't work or I'm
mistaken .
Please help. Thanks

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davesimplewear · 2010-06-19 18:25

I am not sure how you used the Tprocess, but declare Procees in uses
clause then as follows
Code: [Select]procedure TfAdmin.sbEmailClick(Sender: TObject);
var
aProcess:Tprocess;
begin
  AProcess := TProcess.Create(nil);
  AProcess.CommandLine := 'Command';
  AProcess.Options := AProcess.Options + [poWaitOnExit];
  AProcess.Execute;
  AProcess.Free;
end;
There is a section in the wiki how to use, I have found it useful in
executing external programs.

Regards
Dave

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theo · 2010-06-19 23:20

TProcess is not a Shell.
You have to give it the full path, like /usr/bin/python

You can also use this:
FindDefaultExecutablePath('python');

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Sora-Kun · 2010-06-20 05:01

Thanks, the 1st One is better it works

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rajivsoft · 2010-12-14 18:34

hi, i' using this code on Lazarus Mac OS X:
Code: [Select]procedure TCoreEng.StartCal();
var
  Proc : TProcess;
  path: string;
begin
  Proc := TProcess.Create(nil);
  try
    path:='/Applications/iCal.app';
    Proc.CommandLine := path;
    Proc.Options := Proc.Options + [poWaitOnExit];
    Proc.CommandLine := Proc.CommandLine; //+ ' -someparam';
    Proc.Execute;

    //ShowMessage(BoolToStr(Proc.WaitOnExit));
    ShowMessage(IntToStr(Proc.ExitStatus));
  finally
    Proc.free;
  end;
end;
but i can't ever see iCal starting, ShowMessage of ExitStatus give me
a 127 code, if i also use WaitOnExit either ShowMessages give me -1
code...