DelphiBasics
ExitCode
Variable
Sets the return code when an application terminates System unit
  var ExitCode : Integer;
Description
The ExitCode variable is the code returned by a terminating application to the invoker.
 
The ExitCode value will be displayed in a dialog box if the ErrorAddr variable is non 0 when the program terminates.
Related commands
Addr Gives the address of a variable, function or procedure
ErrorAddr Sets the error address when an application terminates
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Example code : Display the exit code in a termination error dialog
// Full Unit code.
// -----------------------------------------------------------
// You must store this code in a unit called Unit1 with a form
// called Form1 that has an OnCreate event called FormCreate.
 
unit Unit1;
 
interface
 
uses
  // The System unit does not need to be defined
  Forms, Dialogs;
 
type
  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
  end;
 
var
  
Form1: TForm1;
 
implementation
{$R *.dfm} // Include form definitions
 
procedure TForm1.FormCreate(Sender: TObject);

var
  i : Integer;
begin
  // Set up an error address so that halt shows a termination dialog
  ErrorAddr := Addr(i);

  // Set the program exit code
  ExitCode := 8;
end;
 
end.
Hide full unit code
   When the program terminates, an error dialog is displayed:
  
   Runtime error    8 at 0069FC94
 
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