DelphiBasics
ErrorAddr
Variable
Sets the error address when an application terminates System unit
  var ErrorAddr : Pointer;
Description
The ErrorAddr variable is set to the address of an error when an application termination condition is reached. The value is displayed in an error dialog.
 
Delphi itself also stores the address of a code error when a run time error is encountered.
Related commands
Addr Gives the address of a variable, function or procedure
ErrorAddr Sets the error address when an application terminates
Exit Exit abruptly from a function or procedure
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Example code : Display an error address 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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