Dos-app.safe?

How do I run an Dos-application safely (without any problems with memory, collision etc.)from my self-developed Delphi-application? I have tried to do it with the Winexec-command (WinExec('c:\test\test.exe' ,SW_maximize);), however it does not work properly all the times, only sometimes (Depending on ...?). Please give me a syntax example...
Thanks!!  Erik N
PS. I run Delphi Developer R2....
PS2. I do not understand the syntax of Createprocess,(I need a syntax example)...
Erik NAsked:
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erajojCommented:
Delphi version?
Have you looked at createprocess?
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Erik NAuthor Commented:
Edited text of question
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Erik NAuthor Commented:
Edited text of question
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sleachCommented:
Here is an example of CreateProcess.  I have tested it, and it works fine Running Dos applications.

Hope this helps.

procedure TForm1.Button1Click(Sender: TObject);
VAR
TPI : TProcessInformation;
TSI : TStartupInfo;
begin
if OpenDialog1.execute then
  begin
  FillChar(TSI, SizeOf(TSI), 0);
  TSI.CB := SizeOf(TSI);
  CreateProcess(PChar(OpenDialog1.FileName), NIL, NIL, NIL, False,
    DETACHED_PROCESS OR NORMAL_PRIORITY_CLASS, NIL, NIL,
    TSI, TPI);
  end;

end;

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