| Description |
The Addr function returns the address of a Variable, Function or Procedure.
It is similar to the @ operator, but is not constrained by the $TypedAddress compiler directive - it always returns an untyped Pointer.
You can cast this to a typed pointer, as in the example.
|
|
| Related commands |
| Pointer |
|
Defines a general use Pointer to any memory based data |
|
|
|
| Example code : Using the address of a string to display the string |
// Full Unit code.
// -----------------------------------------------------------
// You must store this code in a unit called Unit1 with a form
// called Form1 that has an OnCreate event called FormCreate.
unit Unit1;
interface
uses
// The System unit does not need to be defined
Forms, Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm} // Include form definitions
procedure TForm1.FormCreate(Sender: TObject);
var
myString : string;
ptrString : PString;
begin
// Set up variable values
myString := 'Hello there';
ptrString := Addr(myString);
ShowMessage('myString : '+ptrString^);
end;
end.
|
| Hide full unit code |
myString : Hello there
|
|