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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ComCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Edit1: TEdit;
Edit2: TEdit;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
procedure MyCopyDataMsg(Var Msg : TMessage); Message WM_COPYDATA;
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var
cdds : TCopyDataStruct;
begin
cdds.dwData := 0;
cdds.cbData := length(Edit1.Text)+1;
cdds.lpData := pchar(Edit1.Text);
SendMessage(Handle,WM_COPYDATA,0,LongWord(@cdds));
end;
procedure TForm1.MyCopyDataMsg(var Msg: TMessage);
var
cdds : TcopyDataStruct;
begin
if msg.Msg = WM_COPYDATA then
begin
cdds := PcopyDataStruct(Msg.LParam)^;
edit2.Text := (Pchar(cdds.lpData));
end;
end;
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