(*
    GTK-Kylix Library: GTKExtCtrls - Extended visual controls 
    Version 0.6.22  (last updated 2004-11-20)
    Copyright (C) 2004 Tomas Bzatek <tbzatek@users.sourceforge.net>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the 
    Free Software Foundation, Inc., 59 Temple Place - Suite 330, 
    Boston, MA  02111-1307  USA.

*)

unit GTKExtCtrls;
{ $WEAKPACKAGEUNIT}

interface

uses gtk2, gdk2, glib2, Classes, GTKControls, GTKConsts, GTKStdCtrls, GTKUtils, GTKMenus;
   //  Quick jump: QForms QControls QStdCtrls QExtCtrls


type

(****************************************** TGTKSEPARATOR ***********************************************************************)
  TGTKSeparator = class(TGTKControl)
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  end;

(****************************************** TGTKHSEPARATOR **********************************************************************)
  TGTKHSeparator = class(TGTKSeparator)
  public
    constructor Create(AOwner: TComponent); override;
  end;

(****************************************** TGTKVSEPARATOR **********************************************************************)
  TGTKVSeparator = class(TGTKSeparator)
  public
    constructor Create(AOwner: TComponent); override;
  end;

(****************************************** TGTKHANDLEBOX ***********************************************************************)
  TGTKHandleBox = class(TGTKBin)
  private
    function GetShadowType: TGTKShadowType;
    function GetHandlePosition: TGTKPosition;
    function GetSnapEdge: TGTKPosition;
    procedure SetShadowType(Value: TGTKShadowType);
    procedure SetHandlePosition(Value: TGTKPosition);
    procedure SetSnapEdge(Value: TGTKPosition);
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  published
    property ShadowType: TGTKShadowType read GetShadowType write SetShadowType;
    property HandlePosition: TGTKPosition read GetHandlePosition write SetHandlePosition;
    property SnapEdge: TGTKPosition read GetSnapEdge write SetSnapEdge;
  end;

(****************************************** TGTKPROGRESSBAR *********************************************************************)
  TGTKProgressBarOrientation = (poLeftToRight, poRightToLeft, poBottomToTop, poTopToBottom);
  TGTKProgressBar = class(TGTKControl)
  private
    FMax: Int64;
    function GetText: string;
    function GetFraction: Double;
    function GetPulseStep: Double;
    function GetOrientation: TGTKProgressBarOrientation;
    function GetValue: Int64;
    procedure SetText(Value: string);
    procedure SetFraction(Value: Double);
    procedure SetPulseStep(Value: Double);
    procedure SetOrientation(Value: TGTKProgressBarOrientation);
    procedure SetValue(Value: Int64);
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure Pulse;
  published
    property Text: string read GetText write SetText;
    property Fraction: Double read GetFraction write SetFraction;
    property PulseStep: Double read GetPulseStep write SetPulseStep;
    property Orientation: TGTKProgressBarOrientation read GetOrientation write SetOrientation;
    property Max: Int64 read FMax write FMax;
    property Value: Int64 read GetValue write SetValue;
  end;

(****************************************** TGTKPANED ***************************************************************************)
  TGTKPaned = class(TGTKContainer)
  private
    FChild1, FChild2: TGTKControl;
    FOnResize: TNotifyEvent;
    function GetPosition: integer;
    procedure SetPosition(Value: integer);
    procedure SetChild1(Value: TGTKControl);
    procedure SetChild2(Value: TGTKControl);
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  published
    property Child1: TGTKControl read FChild1 write SetChild1;
    property Child2: TGTKControl read FChild2 write SetChild2;
    property Position: integer read GetPosition write SetPosition;
    property OnResize: TNotifyEvent read FOnResize write FOnResize;
  end;

(****************************************** TGTKHPANED **************************************************************************)
  TGTKHPaned = class(TGTKPaned)
  public
    constructor Create(AOwner: TComponent); override;
  end;

(****************************************** TGTKVPANED **************************************************************************)
  TGTKVPaned = class(TGTKPaned)
  public
    constructor Create(AOwner: TComponent); override;
  end;

(****************************************** TGTKNOTEBOOK ************************************************************************)
  TGTKNotebook = class(TGTKContainer)
  private
    FOnSwitchPage: TNotifyEvent;
    function GetPageIndex: integer;
    function GetTabPosition: TGTKPosition;
    function GetShowTabs: boolean;
    function GetShowBorder: boolean;
    function GetScrollable: boolean;
    procedure SetPageIndex(Value: integer);
    procedure SetTabPosition(Value: TGTKPosition);
    procedure SetShowTabs(Value: boolean);
    procedure SetShowBorder(Value: boolean);
    procedure SetScrollable(Value: boolean);
  public
    constructor Create(AOwner: TComponent); virtual;
    destructor Destroy; virtual;
    function AppendPage(Child: TGTKControl; Caption: string): integer;
    procedure RemovePage(PageNo: integer);
    function GetCaption(PageNo: integer): string;
    procedure SetCaption(PageNo: integer; Caption: string);
    procedure NextPage;
    procedure PrevPage;
    function GetExpandTab(PageNo: integer): boolean;
    procedure SetExpandTab(PageNo: integer; Value: boolean);
    function GetFillTab(PageNo: integer): boolean;
    procedure SetFillTab(PageNo: integer; Value: boolean);
    function GetTabLabel(PageNo: integer): TGTKLabel;
  published
    property PageIndex: integer read GetPageIndex write SetPageIndex;
    property TabPosition: TGTKPosition read GetTabPosition write SetTabPosition;
    property ShowTabs: boolean read GetShowTabs write SetShowTabs;
    property ShowBorder: boolean read GetShowBorder write SetShowBorder;
    property Scrollable: boolean read GetScrollable write SetScrollable;
    property OnSwitchPage: TNotifyEvent read FOnSwitchPage write FOnSwitchPage;
  end;

(****************************************** TGTKOPTIONMENU **********************************************************************)
  TGTKOptionMenu = class(TGTKButton)
  private
    FItems: TGTKMenuItem;
    FOnChanged: TNotifyEvent;
    procedure ItemsChanged(Sender: TObject);
    function GetItemIndex: integer;
    procedure SetItemIndex(Value: integer);
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  published
    property Items: TGTKMenuItem read FItems;
    property ItemIndex: integer read GetItemIndex write SetItemIndex;
    property OnChanged: TNotifyEvent read FOnChanged write FOnChanged;
  end;

(****************************************** TGTKSCROLLEDWINDOW ******************************************************************)
  TGTKScrollBarPolicy = (sbAlways, sbAutomatic, sbNever);
  TGTKScrolledWindow = class(TGTKBin)
  private
    function GetHorizScrollBarPolicy: TGTKScrollBarPolicy;
    function GetVertScrollBarPolicy: TGTKScrollBarPolicy;
    procedure SetHorizScrollBarPolicy(Value: TGTKScrollBarPolicy);
    procedure SetVertScrollBarPolicy(Value: TGTKScrollBarPolicy);
    function GetShadowType: TGTKShadowType;
    procedure SetShadowType(Value: TGTKShadowType);
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure AddWithViewPort(Control: TGTKControl);
  published
    property HorizScrollBarPolicy: TGTKScrollBarPolicy read GetHorizScrollBarPolicy write SetHorizScrollBarPolicy;
    property VertScrollBarPolicy: TGTKScrollBarPolicy read GetVertScrollBarPolicy write SetVertScrollBarPolicy;
    property ShadowType: TGTKShadowType read GetShadowType write SetShadowType;
  end;

(****************************************** TGTKBUTTONBOX ***********************************************************************)
  TGTKButtonBoxLayout = (blDefault, blSpread, blEdge, blStart, blEnd);
  TGTKButtonBox = class(TGTKBox)
  private
    function GetLayout: TGTKButtonBoxLayout;
    procedure SetLayout(Value: TGTKButtonBoxLayout);
  public
    constructor Create(AOwner: TComponent); override;
  published
    property Layout: TGTKButtonBoxLayout read GetLayout write SetLayout;
  end;

(****************************************** TGTKHBUTTONBOX **********************************************************************)
  TGTKHButtonBox = class(TGTKButtonBox)
  public
    constructor Create(AOwner: TComponent); override;
  end;

(****************************************** TGTKVBUTTONBOX **********************************************************************)
  TGTKVButtonBox = class(TGTKButtonBox)
  public
    constructor Create(AOwner: TComponent); override;
  end;


(********************************************************************************************************************************)
(********************************************************************************************************************************)
implementation


(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKSeparator.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
end;

destructor TGTKSeparator.Destroy;
begin
  inherited Destroy;
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKHSeparator.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_hseparator_new;
  Show;
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKVSeparator.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_vseparator_new;
  Show;
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKHandleBox.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_handle_box_new;
  Show;
end;

destructor TGTKHandleBox.Destroy;
begin
  inherited Destroy;
end;

function TGTKHandleBox.GetShadowType: TGTKShadowType;
begin
  Result := TGTKShadowType(gtk_handle_box_get_shadow_type(PGtkHandleBox(FWidget)));
end;

procedure TGTKHandleBox.SetShadowType(Value: TGTKShadowType);
begin
  gtk_handle_box_set_shadow_type(PGtkHandleBox(FWidget), gtk2.TGtkShadowType(Value));
end;

function TGTKHandleBox.GetHandlePosition: TGTKPosition;
begin
  Result := TGTKPosition(gtk_handle_box_get_handle_position(PGtkHandleBox(FWidget)));
end;

procedure TGTKHandleBox.SetHandlePosition(Value: TGTKPosition);
begin
  gtk_handle_box_set_handle_position(PGtkHandleBox(FWidget), Integer(Value));
end;

function TGTKHandleBox.GetSnapEdge: TGTKPosition;
begin
  Result := TGTKPosition(gtk_handle_box_get_snap_edge(PGtkHandleBox(FWidget)));
end;

procedure TGTKHandleBox.SetSnapEdge(Value: TGTKPosition);
begin
  gtk_handle_box_set_snap_edge(PGtkHandleBox(FWidget), Integer(Value));
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKProgressBar.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FMax := 100;
  FWidget := gtk_progress_bar_new;
  Show;
end;

destructor TGTKProgressBar.Destroy;
begin
  inherited Destroy;
end;

procedure TGTKProgressBar.Pulse;
begin
  gtk_progress_bar_pulse(PGtkProgressBar(FWidget));
end;

function TGTKProgressBar.GetText: string;
begin
  Result := PgcharToString(gtk_progress_bar_get_text(PGtkProgressBar(FWidget)));
end;

procedure TGTKProgressBar.SetText(Value: string);
begin
  gtk_progress_bar_set_text(PGtkProgressbar(FWidget), StringToPgchar(Value));
end;

function TGTKProgressBar.GetFraction: Double;
begin
  Result := gtk_progress_bar_get_fraction(PGtkProgressbar(FWidget));
end;

procedure TGTKProgressBar.SetFraction(Value: Double);
begin
  gtk_progress_bar_set_fraction(PGtkProgressbar(FWidget), Value);
end;

function TGTKProgressBar.GetPulseStep: Double;
begin
  Result := gtk_progress_bar_get_pulse_step(PGtkProgressbar(FWidget));
end;

procedure TGTKProgressBar.SetPulseStep(Value: Double);
begin
  gtk_progress_bar_set_pulse_step(PGtkProgressbar(FWidget), Value);
end;

function TGTKProgressBar.GetOrientation: TGTKProgressBarOrientation;
begin
  Result := TGTKProgressBarOrientation(gtk_progress_bar_get_orientation(PGtkProgressBar(FWidget)));
end;

procedure TGTKProgressBar.SetOrientation(Value: TGTKProgressBarOrientation);
begin
  gtk_progress_bar_set_orientation(PGtkProgressbar(FWidget), gtk2.TGtkProgressBarOrientation(Value));
end;

function TGTKProgressBar.GetValue: Int64;
begin
  Result := Round(Fraction * Max);
end;

procedure TGTKProgressBar.SetValue(Value: Int64);
begin
  if FMax = 0 then Fraction := 0
  else Fraction := Value / FMax;
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)

procedure TGTKPaned_resize(widget : PGtkWidget; allocation : PGtkAllocation; user_data : gpointer); cdecl;
begin
  if Assigned(TGTKPaned(user_data).FOnResize) then TGTKPaned(user_data).FOnResize(TGTKPaned(user_data));
end;

constructor TGTKPaned.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FChild1 := nil;
  FChild2 := nil;
end;

destructor TGTKPaned.Destroy;
begin
  inherited Destroy;
end;

procedure TGTKPaned.SetChild1(Value: TGTKControl);
begin
  gtk_paned_pack1(PGtkPaned(FWidget), Value.FWidget, True, False);
  g_signal_connect(PGtkObject(Value.FWidget), 'size-allocate', G_CALLBACK(@TGTKPaned_resize), Self);
end;

procedure TGTKPaned.SetChild2(Value: TGTKControl);
begin
  gtk_paned_pack2(PGtkPaned(FWidget), Value.FWidget, True, False);
end;

function TGTKPaned.GetPosition: integer;
begin
  Result := gtk_paned_get_position(PGtkPaned(FWidget));
end;

procedure TGTKPaned.SetPosition(Value: integer);
begin
  gtk_paned_set_position(PGtkPaned(FWidget), Value);
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKHPaned.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_hpaned_new;
  Show;
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKVPaned.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_vpaned_new;
  Show;
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)

procedure TGTKNotebook_switch_page(notebook: PGtkNotebook; page: PGtkNotebookPage; page_num: guint; user_data: gpointer); cdecl;
begin
  if Assigned(user_data) and Assigned(TGTKNotebook(user_data).FOnSwitchPage) then TGTKNotebook(user_data).FOnSwitchPage(user_data);
end;

constructor TGTKNotebook.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_notebook_new;
  FOnSwitchPage := nil;
  g_signal_connect_after(PGtkObject(FWidget), 'switch-page', G_CALLBACK(@TGTKNotebook_switch_page), Self);
  Show;
end;

destructor TGTKNotebook.Destroy;
begin
  inherited Destroy;
end;

function TGTKNotebook.AppendPage(Child: TGTKControl; Caption: string): integer;
begin
  Result := gtk_notebook_append_page(PGtkNotebook(FWidget), Child.FWidget, nil);
  gtk_notebook_set_tab_label_text(PGtkNotebook(FWidget), Child.FWidget, StringToPgchar(Caption));
end;

function TGTKNotebook.GetCaption(PageNo: integer): string;
begin
  Result := PgcharToString(gtk_notebook_get_tab_label_text(PGtkNotebook(FWidget), gtk_notebook_get_nth_page(PGtkNotebook(FWidget), PageNo)));
end;

procedure TGTKNotebook.SetCaption(PageNo: integer; Caption: string);
begin
  gtk_notebook_set_tab_label_text(PGtkNotebook(FWidget), gtk_notebook_get_nth_page(PGtkNotebook(FWidget), PageNo), StringToPgchar(Caption));
end;

procedure TGTKNotebook.RemovePage(PageNo: integer);
begin
  gtk_notebook_remove_page(PGtkNotebook(FWidget), PageNo);
end;

function TGTKNotebook.GetPageIndex: integer;
begin
  Result := gtk_notebook_get_current_page(PGtkNotebook(FWidget));
end;

procedure TGTKNotebook.SetPageIndex(Value: integer);
begin
  gtk_notebook_set_page(PGtkNotebook(FWidget), Value);
end;

procedure TGTKNotebook.NextPage;
begin
  gtk_notebook_next_page(PGtkNotebook(FWidget));
end;

procedure TGTKNotebook.PrevPage;
begin
  gtk_notebook_prev_page(PGtkNotebook(FWidget));
end;

function TGTKNotebook.GetTabPosition: TGTKPosition;
begin
  Result := TGTKPosition(gtk_notebook_get_tab_pos(PGtkNotebook(FWidget)));
end;

procedure TGTKNotebook.SetTabPosition(Value: TGTKPosition);
begin
  gtk_notebook_set_tab_pos(PGtkNotebook(FWidget), Integer(Value));
end;

function TGTKNotebook.GetShowTabs: boolean;
begin
  Result := gtk_notebook_get_show_tabs(PGtkNotebook(FWidget));
end;

procedure TGTKNotebook.SetShowTabs(Value: boolean);
begin
  gtk_notebook_set_show_tabs(PGtkNotebook(FWidget), Value);
end;

function TGTKNotebook.GetShowBorder: boolean;
begin
  Result := gtk_notebook_get_show_border(PGtkNotebook(FWidget));
end;

procedure TGTKNotebook.SetShowBorder(Value: boolean);
begin
  gtk_notebook_set_show_border(PGtkNotebook(FWidget), Value);
end;

function TGTKNotebook.GetScrollable: boolean;
begin
  Result := gtk_notebook_get_scrollable(PGtkNotebook(FWidget));
end;

procedure TGTKNotebook.SetScrollable(Value: boolean);
begin
  gtk_notebook_set_scrollable(PGtkNotebook(FWidget), Value);
end;

function TGTKNotebook.GetExpandTab(PageNo: integer): boolean;
var expand, fill: Pgboolean;
    packtype: PGtkPackType;
begin
  gtk_notebook_query_tab_label_packing(PGtkNotebook(FWidget), gtk_notebook_get_nth_page(PGtkNotebook(FWidget), PageNo), expand, fill, packtype);
  Result := expand <> nil;
end;

procedure TGTKNotebook.SetExpandTab(PageNo: integer; Value: boolean);
begin
  gtk_notebook_set_tab_label_packing(PGtkNotebook(FWidget), gtk_notebook_get_nth_page(PGtkNotebook(FWidget), PageNo), Value, GetFillTab(PageNo), GTK_PACK_START);
end;

function TGTKNotebook.GetFillTab(PageNo: integer): boolean;
var expand, fill: Pgboolean;
    packtype: PGtkPackType;
begin
  gtk_notebook_query_tab_label_packing(PGtkNotebook(FWidget), gtk_notebook_get_nth_page(PGtkNotebook(FWidget), PageNo), expand, fill, packtype);
  Result := fill <> nil;
end;

procedure TGTKNotebook.SetFillTab(PageNo: integer; Value: boolean);
begin
  gtk_notebook_set_tab_label_packing(PGtkNotebook(FWidget), gtk_notebook_get_nth_page(PGtkNotebook(FWidget), PageNo), GetExpandTab(PageNo), Value, GTK_PACK_START);
end;

function TGTKNotebook.GetTabLabel(PageNo: integer): TGTKLabel;
begin
  Result := TGTKLabel.CreateFromWidget(Self, gtk_notebook_get_tab_label(PGtkNotebook(FWidget), gtk_notebook_get_nth_page(PGtkNotebook(FWidget), PageNo)));
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
procedure TGTKOptionMenu_changed(optionmenu: PGtkOptionMenu; user_data: pgpointer); cdecl;
begin
  if Assigned(TGTKOptionMenu(user_data).FOnChanged) then TGTKOptionMenu(user_data).FOnChanged(TGTKOptionMenu(user_data));
end;

constructor TGTKOptionMenu.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FOnChanged := nil;
  FWidget := gtk_option_menu_new;
  g_signal_connect(PGtkObject(FWidget), 'changed', G_CALLBACK(@TGTKOptionMenu_changed), Self);
  Show;
  FItems := TGTKMenuItem.Create(Self);
  FItems.FParentMenu := Self;
  FItems.Notify := ItemsChanged;
end;

destructor TGTKOptionMenu.Destroy;
begin
  FItems.Notify := nil;
  FItems.Free;
  inherited Destroy;
end;

procedure TGTKOptionMenu.ItemsChanged(Sender: TObject);
begin
  if Assigned(FItems.FMenu) and (gtk_option_menu_get_menu(PGtkOptionMenu(FWidget)) <> FItems.FMenu)
    then gtk_option_menu_set_menu(PGtkOptionMenu(FWidget), FItems.FMenu);
end;

function TGTKOptionMenu.GetItemIndex: integer;
begin
  Result := gtk_option_menu_get_history(PGtkOptionMenu(FWidget));
end;

procedure TGTKOptionMenu.SetItemIndex(Value: integer);
begin
  gtk_option_menu_set_history(PGtkOptionMenu(FWidget), Value);
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKScrolledWindow.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_scrolled_window_new(nil, nil);
  Show;
end;

destructor TGTKScrolledWindow.Destroy;
begin
  inherited Destroy;
end;

function TGTKScrolledWindow.GetHorizScrollBarPolicy: TGTKScrollBarPolicy;
var hscrollbar, vscrollbar: tGtkPolicyType;
begin
  gtk_scrolled_window_get_policy(PGtkScrolledWindow(FWidget), @hscrollbar, @vscrollbar);
  Result := TGTKScrollBarPolicy(hscrollbar);
end;

procedure TGTKScrolledWindow.SetHorizScrollBarPolicy(Value: TGTKScrollBarPolicy);
begin
  gtk_scrolled_window_set_policy(PGtkScrolledWindow(FWidget), TGtkPolicyType(Value), TGtkPolicyType(VertScrollBarPolicy));
end;

function TGTKScrolledWindow.GetVertScrollBarPolicy: TGTKScrollBarPolicy;
var hscrollbar, vscrollbar: tGtkPolicyType;
begin
  gtk_scrolled_window_get_policy(PGtkScrolledWindow(FWidget), @hscrollbar, @vscrollbar);
  Result := TGTKScrollBarPolicy(vscrollbar);
end;

procedure TGTKScrolledWindow.SetVertScrollBarPolicy(Value: TGTKScrollBarPolicy);
begin
  gtk_scrolled_window_set_policy(PGtkScrolledWindow(FWidget), TGtkPolicyType(HorizScrollBarPolicy), TGtkPolicyType(Value));
end;

function TGTKScrolledWindow.GetShadowType: TGTKShadowType;
begin
  Result := TGTKShadowType(gtk_scrolled_window_get_shadow_type(PGtkScrolledWindow(FWidget)));
end;

procedure TGTKScrolledWindow.SetShadowType(Value: TGTKShadowType);
begin
  gtk_scrolled_window_set_shadow_type(PGtkScrolledWindow(FWidget), gtk2.TGtkShadowType(Value));
end;

procedure TGTKScrolledWindow.AddWithViewPort(Control: TGTKControl);
begin
  gtk_scrolled_window_add_with_viewport(PGtkScrolledWindow(FWidget), Control.FWidget);
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKButtonBox.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
end;

function TGTKButtonBox.GetLayout: TGTKButtonBoxLayout;
begin
  Result := TGTKButtonBoxLayout(gtk_button_box_get_layout(PGtkButtonBox(FWidget)));
end;

procedure TGTKButtonBox.SetLayout(Value: TGTKButtonBoxLayout);
begin
  gtk_button_box_set_layout(PGtkButtonBox(FWidget), Integer(Value));
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKHButtonBox.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_hbutton_box_new;
  Show;
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKVButtonBox.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FWidget := gtk_vbutton_box_new;
  Show;
end;

(********************************************************************************************************************************)
(********************************************************************************************************************************)



end.