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  ±¸Ã¢¹Î(2003-03-14 12:17:09, Hit : 5598, Vote : 1177
 http://www.delphi.pe.kr
 ¾²·¹µå ³»¿¡¼­ ÆûÀ» »ý¼ºÇغ¸ÀÚ

[ÆÁ]¾²·¹µå ³»¿¡¼­ ÆûÀ» »ý¼ºÇغ¸ÀÚ

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type
  TDlgThread = class(TThread)
  private
  public
    Dlg: TDlgForm; // second form
    procedure Execute; override;
    constructor Create(hMainWin: THandle; ...); // handle of mainform
and another any personal parameters
  end;

const WM_USERDLG = WM_USER + 10;

type TMainForm = class(TForm)
       ....
     private
       procedure WMUserDlg(var Msg: TMessage); message WM_USERDLG; event
handler
       ....
     end;

var DlgThread: TDlgThread;


implementation

constructor TDlgThread.Create(hMainWin: THandler; ...);
begin
  inherited Create(True); // wait of resume command
  FreeOnTerminate:=True;
  if not Assigned(Dlg) then
     Dlg:=TDlgForm.CreateParented(hMainWin);
  with Dlg do
  begin
     ...  // to give over parameters
  end;
end;

procedure TDlgThread.Execute;
var Erg: Integer;
begin
try
  Erg:=Dlg.ShowModal; // second form
  PostMessage(Dlg.ParentWindow,WM_USERDLG,Erg,0); // return signal to
mainform after closed
                                                  // the secound form,
  // with self defined message
finally
  Dlg.Release;  // clear memory
  Dlg:=nil;
end;
end;


procedure TMainForm.Button1Click(Sender as TObject);
begin

  if Assigned(Dlg) then  // Test
     begin
       ShowMessage('Dialog is already running');
       exit;
     end;

  DlgThread:=TDlgThread.Create(Handle,...); // create thread
  DlgThread.Resume; // start thread
end;

procedure TMainForm.WMUserDlg(var Msg: TMessage);
begin
  ShowMessage(format('Second form closed with return code
%d',[Msg.LParam]);
end;

end.








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