{ Избавление от ScrollBar'ов в MDI-форме. (С) Peter Below (TeamB) }
{ Не надо VCL переписывать :-) }
unit MainForm;
interface
uses
 Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
 Menus;
type
 TfMain = class(TForm)
  MainMenu1: TMainMenu;
  Newchild1: TMenuItem;
  Newchild2: TMenuItem;
  procedure Newchild2Click(Sender: TObject);
  procedure FormCreate(Sender: TObject);
 private
  { Private declarations }
 public
  { Public declarations }
 end;
var
 fMain: TfMain;
implementation
uses ChildForm;
{$R *.DFM}
procedure TfMain.Newchild2Click(Sender: TObject);
begin
 with TfChild.Create(Application) do
  Show();
end;
function ClientWindowProc( wnd: HWND; msg: Cardinal; wparam, lparam: Integer ): Integer; stdcall;
var
 f: Pointer;
begin
 f := Pointer( GetWindowLong( wnd, GWL_USERDATA ));
 case msg of
 WM_NCCALCSIZE:
  if ( GetWindowLong( wnd, GWL_STYLE ) and
  (WS_HSCROLL or WS_VSCROLL)) <> 0 then
  SetWindowLong( wnd, GWL_STYLE, GetWindowLong( wnd, GWL_STYLE )
  and not (WS_HSCROLL or WS_VSCROLL));
 end;
 Result := CallWindowProc( f, wnd, msg, wparam, lparam );
end;
procedure TfMain.FormCreate(Sender: TObject);
begin
 if ClientHandle <> 0 then begin
  if GetWindowLong( ClientHandle, GWL_USERDATA ) <> 0 then
  Exit; {cannot subclass client window, userdata already in use}
  SetWindowLong(ClientHandle, GWL_USERDATA, SetWindowLong( ClientHandle,
  GWL_WNDPROC, integer( @ClientWindowProc)));
end;
end;
end.