diff --git a/lcl/arrow.pp b/lcl/arrow.pp
index 241f815de5..31d5e64256 100644
--- a/lcl/arrow.pp
+++ b/lcl/arrow.pp
@@ -41,11 +41,6 @@ Type
   TArrowType = (atUp, atDown, atLeft, atRight);
   TShadowType = (stNone, stIn, stOut, stEtchedIn, stEtchedOut);
 
-  TLMArrow = record
-    ArrowType : TArrowType;
-    ShadowType : TShadowType;
-  end;
-
   TArrow = class(TCustomControl)
   private
     FArrowType : TArrowType;
@@ -81,7 +76,7 @@ procedure Register;
 implementation
 
 uses
-  InterfaceBase;
+  InterfaceBase, WSArrow;
 
 procedure Register;
 begin
@@ -140,15 +135,9 @@ begin
 end;
 
 procedure TArrow.SetProps;
-var
-  Temp : TLMArrow;
 begin
   if HandleAllocated and (not (csLoading in ComponentState)) then
-  begin
-    Temp.ArrowType := FArrowType;
-    Temp.ShadowType := FShadowType;
-    CNSendMessage(LM_SetValue,self,@Temp);
-  end;
+    TWSArrowClass(WidgetSetClass).SetType(Self, FArrowType, FShadowType);
 end;
 
 procedure TArrow.SetShadowType(const AValue: TShadowType);
diff --git a/lcl/calendar.pp b/lcl/calendar.pp
index 23f3343f7a..de3a5ae57a 100644
--- a/lcl/calendar.pp
+++ b/lcl/calendar.pp
@@ -43,12 +43,6 @@ Type
                      dsShowWeekNumbers,dsStartMonday);
   TDisplaySettings = set of TDisplaySetting;
   
-  TLMCalendar = record
-    Date : TDateTime;
-    DisplaySettings : TDisplaySettings;
-    Readonly : Boolean;
-  end;
-  
   EInvalidDate = class(Exception);
   
   TCustomCalendar = class(TWinControl)
@@ -251,20 +245,17 @@ begin
 end;
 
 Procedure TCustomCalendar.SetProps;
-var
-  Temp : TLMCalendar;
 begin
   if HandleAllocated and ([csLoading,csDestroying]*ComponentState=[]) then
   begin
     FPropsChanged:=false;
-    Temp.Date := FDate;
-    Temp.DisplaySettings := FDisplaySettings;
-    Temp.ReadOnly := fReadOnly;
     {$IFDEF VerboseCalenderSetDate}
     DebugLn('TCustomCalendar.SetProps A ',FDate,' ',FDateAsString);
     {$ENDIF}
-    CNSendMessage(LM_SETVALUE, Self, @temp);	// Get the info
-  End else begin
+    TWSCalendarClass(WidgetSetClass).SetDateTime(Self, FDate);
+    TWSCalendarClass(WidgetSetClass).SetDisplaySettings(Self, FDisplaySettings);
+    TWSCalendarClass(WidgetSetClass).SetReadOnly(Self, FReadOnly);
+  end else begin
     FPropsChanged:=true;
   end;
 end;
diff --git a/lcl/include/customcheckbox.inc b/lcl/include/customcheckbox.inc
index 862eab3788..ff2b32d27b 100644
--- a/lcl/include/customcheckbox.inc
+++ b/lcl/include/customcheckbox.inc
@@ -180,7 +180,7 @@ end;
 procedure TCustomCheckBox.ApplyChanges;
 begin
   if HandleAllocated and (not (csLoading in ComponentState)) then begin
-    CNSendMessage(LM_SetValue,Self,@fState);
+    TWSCustomCheckBoxClass(WidgetSetClass).SetState(Self, FState);
   end;
 end;
 
@@ -210,6 +210,9 @@ end;
 
 {
   $Log$
+  Revision 1.26  2004/09/19 18:50:28  micha
+  convert LM_SETVALUE message to interface methods
+
   Revision 1.25  2004/09/18 17:07:57  micha
   convert LM_GETVALUE message to interface method
 
diff --git a/lcl/include/progressbar.inc b/lcl/include/progressbar.inc
index 7dfb96c2e0..b57d8dc953 100644
--- a/lcl/include/progressbar.inc
+++ b/lcl/include/progressbar.inc
@@ -219,7 +219,7 @@ begin
   inc (FPosition, FStep);
   if FPosition > FMax then FPosition := FMax;
   if FPosition < FMin then FPosition := FMin;
-  CNSendMessage(LM_SetValue, Self, @FPosition);
+  TWSProgressBarClass(WidgetSetClass).SetPosition(Self, FPosition);
 end;
 
 
@@ -296,6 +296,9 @@ end;
 
 {
   $Log$
+  Revision 1.8  2004/09/19 18:50:28  micha
+  convert LM_SETVALUE message to interface methods
+
   Revision 1.7  2004/04/10 17:58:57  mattias
   implemented mainunit hints for include files
 
diff --git a/lcl/include/trackbar.inc b/lcl/include/trackbar.inc
index 06d8f7ca1f..dffeca3ccc 100644
--- a/lcl/include/trackbar.inc
+++ b/lcl/include/trackbar.inc
@@ -164,8 +164,8 @@ begin
   if FPosition <> Value then
   begin
     FPosition := Value;
-    if HandleAllocated
-    then CNSendMessage(LM_SetValue, Self, @FPosition);
+    if HandleAllocated then 
+      TWSTrackBarClass(WidgetSetClass).SetPosition(Self, FPosition);
   end;
 end;
 
@@ -331,6 +331,9 @@ end;
 { -------------------- unimplemented stuff below ------------------------------}
 {
   $Log$
+  Revision 1.15  2004/09/19 18:50:28  micha
+  convert LM_SETVALUE message to interface methods
+
   Revision 1.14  2004/09/18 17:07:57  micha
   convert LM_GETVALUE message to interface method
 
diff --git a/lcl/interfaces/gtk/gtkint.pp b/lcl/interfaces/gtk/gtkint.pp
index 47dec43761..49fee83b2d 100644
--- a/lcl/interfaces/gtk/gtkint.pp
+++ b/lcl/interfaces/gtk/gtkint.pp
@@ -245,8 +245,6 @@ type
 
     // misc
     Function GetCaption(Sender : TObject) : String; virtual;
-    function  GetValue(Sender : TObject; Data : pointer) : integer;virtual;
-    function  SetValue(Sender : TObject; Data : pointer) : integer;virtual;
     function  SetProperties (Sender: TObject) : integer;virtual;
     procedure WordWrap(DC: HDC; AText: PChar; MaxWidthInPixel: integer;
       var Lines: PPChar; var LineCount: integer);
@@ -331,7 +329,7 @@ uses
 // uncomment only those units with implementation
 ////////////////////////////////////////////////////
 // GtkWSActnList,
-// GtkWSArrow,
+ GtkWSArrow,
  GtkWSButtons,
  GtkWSCalendar,
  GtkWSCheckLst,
@@ -455,6 +453,9 @@ end.
 { =============================================================================
 
   $Log$
+  Revision 1.210  2004/09/19 18:50:28  micha
+  convert LM_SETVALUE message to interface methods
+
   Revision 1.209  2004/09/18 17:07:57  micha
   convert LM_GETVALUE message to interface method
 
diff --git a/lcl/interfaces/gtk/gtkobject.inc b/lcl/interfaces/gtk/gtkobject.inc
index f167ce175f..237f75099d 100644
--- a/lcl/interfaces/gtk/gtkobject.inc
+++ b/lcl/interfaces/gtk/gtkobject.inc
@@ -3083,8 +3083,6 @@ begin
   case LM_Message of
   LM_Create   : CreateComponent(Sender);
 
-  LM_SETVALUE  : Result := SetValue(Sender, data);
-
   LM_SETPROPERTIES: Result := SetProperties(Sender);
 
   LM_SETDESIGNING :
@@ -6221,170 +6219,13 @@ begin
   Result := TGDKColorToTColor(GDKColor);
 end;
 
-{------------------------------------------------------------------------------
-  Method: TGtkWidgetSet.GetValue
-  Params:  Sender : the lcl object which called this func via SenMessage
-           Data   : pointer to component specific variable
-  Returns: currently always 0
-
-  Depending on the compStyle, this function will get the current value
-  of a GTK object and save it in the variable referenced by 'data'.
-
-  This function should be used to synchronize the state of an lcl-object
-  with the corresponding GTK-object.
- ------------------------------------------------------------------------------}
-function TGtkWidgetSet.GetValue (Sender : TObject; data : pointer) : integer;
-type
-  PCheckBoxState = ^TCheckBoxState;
-var
-  Handle    : Pointer;
-begin
-  Result := 0;     // default if nobody sets it
-
-  if Sender is TWinControl then
-    Assert(False, Format('Trace:  [TGtkWidgetSet.GetValue] %s', [Sender.ClassName]))
-  else
-    Assert(False, Format('Trace:WARNING: [TGtkWidgetSet.GetValue] %s --> No Decendant of TWinControl', [Sender.ClassName]));
-
-  Handle    := Pointer(TWinControl(Sender).Handle);
-  Assert (Handle = nil, 'WARNING: [TGtkWidgetSet.GetValue] --> got nil pointer (no gtkobject)');
-
-  case TControl(Sender).fCompStyle of
+{ TODO: move this ``LM_GETVALUE'' spinedit code someplace useful
 
   csSpinEdit :
     Begin
       Single(Data^):=gtk_spin_button_get_value_As_Float(PgtkSpinButton(Handle));
     end;
-
-  else
-    DebugLn('Warning: TGtkWidgetSet.GetValue not implemented for ',Sender.ClassName);
-  end;
-end;
-
-{------------------------------------------------------------------------------
-  Method: TGtkWidgetSet.SetValue
-  Params:  Sender : the lcl object which called this func via SendMessage
-           Data   : pointer to component specific variable
-  Returns: currently always 0
-
-  Depending on the compStyle, this function will apply the parameter 'data'
-  to the GTK object repesenting the lcl-object which called the function.
-
-  This function should for be used in cases where the most common property
-  of an object has changed (e.g. the position of a trackbar). If more than
-  one property changed use the SetProperties function instead;
- ------------------------------------------------------------------------------}
-function TGtkWidgetSet.SetValue(Sender : TObject; data : pointer) : integer;
-var
-   Handle    : Pointer;
-   //used for csCalendar
-   Date : TDateTime;
-   Year,Month,Day : String;
-   gtkcalendardisplayoptions : TGtkCalendarDisplayOptions;
-   Num : Integer;
-
-   ArrowType : TGTKArrowType;
-   ShadowType : TGTKShadowType;
-begin
-  result := 0;     // default if nobody sets it
-
-  if Sender is TWinControl
-  then Assert(False, Format('Trace:  [TGtkWidgetSet.SetValue] %s', [Sender.ClassName]))
-  else Assert(False, Format('Trace:WARNING: [TGtkWidgetSet.SetValue] %s --> No Decendant of TWinControl', [Sender.ClassName]));
-
-  Handle    := Pointer(TWinControl(Sender).Handle);
-//   Assert (Handle = nil, 'WARNING: [TGtkWidgetSet.SetValue] --> got nil pointer (no gtkobject)');
-
-  case TControl(Sender).fCompStyle of
-  csProgressBar: gtk_progress_set_value (GTK_PROGRESS (handle), integer (data^));
-
-  csTrackbar   :
-    begin
-      if Handle = nil then Exit;
-      gtk_range_get_adjustment (GTK_RANGE (handle))^.value := integer (data^);
-      g_signal_emit_by_name (PGtkObject
-         (gtk_range_get_adjustment (
-             GTK_RANGE (handle))), 'value_changed');
-    end;
-
-  csRadiobutton,
-  csCheckbox,
-  csToggleBox:
-    begin
-      LockOnChange(PGtkObject(Handle),1);
-      gtk_toggle_button_set_active(PGtkToggleButton(handle),
-        (TCheckBoxState(data^) = cbChecked));
-      LockOnChange(PGtkObject(Handle),-1);
-    end;
-
-  csCalendar   :
-    Begin
-       Date := TLMCalendar(data^).Date;
-       Year := FormatDateTime('yyyy',Date);
-       Month := FormatDateTime('mm',Date);
-       Day := FormatDateTime('dd',Date);
-       gtk_calendar_select_month(PgtkCalendar(handle),StrtoInt(Month)-1,StrToInt(Year));
-       gtk_calendar_select_day(PgtkCalendar(handle),StrToInt(Day));
-
-       //set display options
-       Num := 0;
-       if (dsShowHeadings in TLMCalendar(data^).DisplaySettings) then
-          num := Num + (1 shl 0);
-
-       if (dsShowDayNames in TLMCalendar(data^).DisplaySettings) then
-          num := Num  + (1 shl 1);
-
-       if (dsNoMonthChange in TLMCalendar(data^).DisplaySettings) then
-          num := Num  + (1 shl 2);
-
-       if (dsShowWeekNumbers in TLMCalendar(data^).DisplaySettings) then
-           num := Num  + (1 shl 3);
-
-       if (dsStartMonday in TLMCalendar(data^).DisplaySettings) then
-           num := Num  + (1 shl 4);
-
-       gtkCalendarDisplayOptions := TgtkCalendarDisplayOPtions(num);
-
-       gtk_Calendar_Display_options(PgtkCalendar(handle),gtkCalendarDisplayOptions);
-
-       //readonly
-       if TLMCalendar(data^).ReadOnly then
-          gtk_calendar_freeze(PgtkCalendar(handle))
-       else
-          gtk_calendar_thaw(PgtkCalendar(handle));
-
-     end;
-
-  csArrow :
-    begin
-      if TLmArrow(data^).ArrowType = atUp then
-        ArrowType := GTK_ARROW_UP
-      else
-      if TLMArrow(data^).ArrowType = atLeft then
-        ArrowType := GTK_ARROW_LEFT
-      else
-      if TLMArrow(data^).ArrowType = atRight then
-        ArrowType := GTK_ARROW_RIGHT
-      else
-        ArrowType := GTK_ARROW_DOWN;
-
-      case TLMArrow(data^).ShadowType of
-        stNONE : ShadowType := GTK_SHADOW_NONE;
-        stIN : ShadowType := GTK_SHADOW_IN;
-        stOut : ShadowType := GTK_SHADOW_OUT;
-        stEtchedIn : ShadowType := GTK_SHADOW_ETCHED_IN;
-        stEtchedOut : ShadowType := GTK_SHADOW_ETCHED_OUT;
-      else
-        ShadowType := GTK_SHADOW_NONE;
-      end;
-
-      gtk_arrow_set(PgtkArrow(handle),ArrowType,ShadowType);
-    end;
-
-  else
-    Assert (true, Format ('WARNING:[TGtkWidgetSet.SetValue] failed for %s', [Sender.ClassName]));
-  end;
-end;
+}
 
 {------------------------------------------------------------------------------
   Method: TGtkWidgetSet.SetProperties
@@ -7863,6 +7704,9 @@ end;
  { =============================================================================
 
   $Log$
+  Revision 1.585  2004/09/19 18:50:28  micha
+  convert LM_SETVALUE message to interface methods
+
   Revision 1.584  2004/09/18 17:07:57  micha
   convert LM_GETVALUE message to interface method
 
diff --git a/lcl/interfaces/gtk/gtkwsarrow.pp b/lcl/interfaces/gtk/gtkwsarrow.pp
index e5e61b4e45..0f77503d1d 100644
--- a/lcl/interfaces/gtk/gtkwsarrow.pp
+++ b/lcl/interfaces/gtk/gtkwsarrow.pp
@@ -27,6 +27,11 @@ unit GtkWSArrow;
 interface
 
 uses
+  {$IFDEF gtk2}
+  glib2, gdk2pixbuf, gdk2, gtk2, Pango,
+  {$ELSE}
+  glib, gdk, gtk, {$Ifndef NoGdkPixbufLib}gdkpixbuf,{$EndIf} GtkFontCache,
+  {$ENDIF}
   Arrow, WSArrow, WSLCLClasses;
 
 type
@@ -37,11 +42,42 @@ type
   private
   protected
   public
+    class procedure SetType(const AArrow: TArrow; const AArrowType: TArrowType; 
+      const AShadowType: TShadowType); override;
   end;
 
 
 implementation
 
+{ TGtkWSArrow }
+
+procedure TGtkWSArrow.SetType(const AArrow: TArrow; const AArrowType: TArrowType;
+  const AShadowType: TShadowType);
+var
+  ArrowType : TGTKArrowType;
+  ShadowType : TGTKShadowType;
+begin
+  case AArrowType of
+    atUp:    ArrowType := GTK_ARROW_UP;
+    atLeft:  ArrowType := GTK_ARROW_LEFT;
+    atRight: ArrowType := GTK_ARROW_RIGHT;
+  else
+             ArrowType := GTK_ARROW_DOWN;
+  end;
+
+  case AShadowType of
+    stNONE : ShadowType := GTK_SHADOW_NONE;
+    stIN : ShadowType := GTK_SHADOW_IN;
+    stOut : ShadowType := GTK_SHADOW_OUT;
+    stEtchedIn : ShadowType := GTK_SHADOW_ETCHED_IN;
+    stEtchedOut : ShadowType := GTK_SHADOW_ETCHED_OUT;
+  else
+    ShadowType := GTK_SHADOW_NONE;
+  end;
+
+  gtk_arrow_set(PGtkArrow(AArrow.Handle), ArrowType, ShadowType);
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
@@ -50,6 +86,6 @@ initialization
 // To improve speed, register only classes
 // which actually implement something
 ////////////////////////////////////////////////////
-//  RegisterWSComponent(TArrow, TGtkWSArrow);
+  RegisterWSComponent(TArrow, TGtkWSArrow);
 ////////////////////////////////////////////////////
 end.
diff --git a/lcl/interfaces/gtk/gtkwscalendar.pp b/lcl/interfaces/gtk/gtkwscalendar.pp
index e69ee37c8c..ca02a9089b 100644
--- a/lcl/interfaces/gtk/gtkwscalendar.pp
+++ b/lcl/interfaces/gtk/gtkwscalendar.pp
@@ -44,6 +44,10 @@ type
   protected
   public
     class function  GetDateTime(const ACalendar: TCustomCalendar): TDateTime; override;
+    class procedure SetDateTime(const ACalendar: TCustomCalendar; const ADateTime: TDateTime); override;
+    class procedure SetDisplaySettings(const ACalendar: TCustomCalendar; 
+      const ADisplaySettings: TDisplaySettings); override;
+    class procedure SetReadOnly(const ACalendar: TCustomCalendar; const AReadOnly: boolean); override;
   end;
 
 
@@ -58,6 +62,56 @@ begin
   Result := EncodeDate(Year,Month+1,Day);
 end;
 
+procedure TGtkWSCalendar.SetDateTime(const ACalendar: TCustomCalendar; const ADateTime: TDateTime);
+var
+  Year, Month, Day: string;
+  GtkCalendar: PGtkCalendar;
+begin
+  GtkCalendar := PGtkCalendar(ACalendar.Handle);
+  Year := FormatDateTime('yyyy', ADateTime);
+  Month := FormatDateTime('mm', ADateTime);
+  Day := FormatDateTime('dd', ADateTime);
+  gtk_calendar_select_month(GtkCalendar,StrtoInt(Month)-1,StrToInt(Year));
+  gtk_calendar_select_day(GtkCalendar,StrToInt(Day));
+end;
+
+procedure TGtkWSCalendar.SetDisplaySettings(const ACalendar: TCustomCalendar; 
+  const ADisplaySettings: TDisplaySettings);
+var
+  num: dword;
+  gtkcalendardisplayoptions : TGtkCalendarDisplayOptions;
+begin
+  num := 0;
+  if (dsShowHeadings in ADisplaySettings) then
+    num := Num + (1 shl 0);
+
+  if (dsShowDayNames in ADisplaySettings) then
+    num := Num  + (1 shl 1);
+
+  if (dsNoMonthChange in ADisplaySettings) then
+    num := Num  + (1 shl 2);
+
+  if (dsShowWeekNumbers in ADisplaySettings) then
+     num := Num  + (1 shl 3);
+
+  if (dsStartMonday in ADisplaySettings) then
+     num := Num  + (1 shl 4);
+
+  gtkCalendarDisplayOptions := TGtkCalendarDisplayOptions(num);
+  gtk_Calendar_Display_options(PGtkCalendar(ACalendar.Handle), gtkCalendarDisplayOptions);
+end;
+
+procedure TGtkWSCalendar.SetReadOnly(const ACalendar: TCustomCalendar; const AReadOnly: boolean);
+var
+  GtkCalendar: PGtkCalendar;
+begin
+  GtkCalendar := PGtkCalendar(ACalendar.Handle);
+  if AReadOnly then
+    gtk_calendar_freeze(GtkCalendar)
+  else
+    gtk_calendar_thaw(GtkCalendar);
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
diff --git a/lcl/interfaces/gtk/gtkwscomctrls.pp b/lcl/interfaces/gtk/gtkwscomctrls.pp
index 9eda139334..08a7e4d54c 100644
--- a/lcl/interfaces/gtk/gtkwscomctrls.pp
+++ b/lcl/interfaces/gtk/gtkwscomctrls.pp
@@ -112,6 +112,7 @@ type
   private
   protected
   public
+    class procedure SetPosition(const AProgressBar: TProgressBar; const NewPosition: integer); override;
   end;
 
   { TGtkWSCustomUpDown }
@@ -158,6 +159,7 @@ type
   protected
   public
     class function  GetPosition(const ATrackBar: TCustomTrackBar): integer; override;
+    class procedure SetPosition(const ATrackBar: TCustomTrackBar; const NewPosition: integer); override;
   end;
 
   { TGtkWSCustomTreeView }
@@ -770,6 +772,13 @@ begin
 end;
 {$ENDIF}
 
+{ TGtkWSProgressBar }
+
+procedure TGtkWSProgressBar.SetPosition(const AProgressBar: TProgressBar; const NewPosition: integer);
+begin
+  gtk_progress_set_value(GTK_PROGRESS(AProgressBar.Handle), NewPosition);
+end;
+
 { TGtkWSToolbar }
 
 {$ifdef OldToolbar}
@@ -836,6 +845,16 @@ begin
     Result := 0;
 end;
 
+procedure TGtkWSTrackBar.SetPosition(const ATrackBar: TCustomTrackBar; const NewPosition: integer);
+var
+  Handle: HWND;
+begin
+  Handle := ATrackBar.Handle;
+  gtk_range_get_adjustment(GTK_RANGE(Handle))^.value := NewPosition;
+  g_signal_emit_by_name(PGtkObject(
+    gtk_range_get_adjustment(GTK_RANGE(Handle))), 'value_changed');
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
@@ -849,7 +868,7 @@ initialization
 //  RegisterWSComponent(TCustomPageControl, TGtkWSPageControl);
   RegisterWSComponent(TCustomListView, TGtkWSCustomListView);
 //  RegisterWSComponent(TCustomListView, TGtkWSListView);
-//  RegisterWSComponent(TCustomProgressBar, TGtkWSProgressBar);
+  RegisterWSComponent(TProgressBar, TGtkWSProgressBar);
 //  RegisterWSComponent(TCustomUpDown, TGtkWSCustomUpDown);
 //  RegisterWSComponent(TCustomUpDown, TGtkWSUpDown);
 //  RegisterWSComponent(TCustomToolButton, TGtkWSToolButton);
diff --git a/lcl/interfaces/gtk/gtkwsstdctrls.pp b/lcl/interfaces/gtk/gtkwsstdctrls.pp
index 3d63ef5e31..4e79e6d906 100644
--- a/lcl/interfaces/gtk/gtkwsstdctrls.pp
+++ b/lcl/interfaces/gtk/gtkwsstdctrls.pp
@@ -188,6 +188,7 @@ type
     class function  RetrieveState(const ACustomCheckBox: TCustomCheckBox): TCheckBoxState; override;
     class procedure SetShortCut(const ACustomCheckBox: TCustomCheckBox; 
       const OldShortCut, NewShortCut: TShortCut); override;
+    class procedure SetState(const ACustomCheckBox: TCustomCheckBox; const NewState: TCheckBoxState); override;
   end;
 
   { TGtkWSCheckBox }
@@ -630,6 +631,16 @@ begin
   gtk_text_thaw(PGtkText(Widget));
 end;
 
+procedure TGtkWSCustomCheckBox.SetState(const ACustomCheckBox: TCustomCheckBox; const NewState: TCheckBoxState);
+var
+  GtkObject: PGtkObject;
+begin
+  GtkObject := PGtkObject(ACustomCheckBox.Handle);
+  LockOnChange(GtkObject,1);
+  gtk_toggle_button_set_active(PGtkToggleButton(GtkObject), NewState = cbChecked);
+  LockOnChange(GtkObject,-1);
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
diff --git a/lcl/interfaces/win32/win32int.pp b/lcl/interfaces/win32/win32int.pp
index 0166dbb2f1..3a15190864 100644
--- a/lcl/interfaces/win32/win32int.pp
+++ b/lcl/interfaces/win32/win32int.pp
@@ -134,7 +134,6 @@ Type
     Procedure AssignSelf(Window: HWnd; Data: Pointer);
 
     Procedure SetText(Window: HWND; Data: Pointer);
-    Function SetValue (Sender: TObject; Data: Pointer): Integer;
     Function SetProperties(Sender: TObject): Integer;
 
     Procedure AllocAndCopy(const BitmapInfo: Windows.TBitmap; const SrcRect: TRect; var Data: PByte; var Size: Cardinal);
@@ -212,7 +211,7 @@ Uses
 // uncomment only those units with implementation
 ////////////////////////////////////////////////////
 // Win32WSActnList,
-// Win32WSArrow,
+ Win32WSArrow,
  Win32WSButtons,
  Win32WSCalendar,
  Win32WSCheckLst,
@@ -276,6 +275,9 @@ End.
 { =============================================================================
 
   $Log$
+  Revision 1.115  2004/09/19 18:50:28  micha
+  convert LM_SETVALUE message to interface methods
+
   Revision 1.114  2004/09/18 17:07:58  micha
   convert LM_GETVALUE message to interface method
 
diff --git a/lcl/interfaces/win32/win32object.inc b/lcl/interfaces/win32/win32object.inc
index 7c2086f115..850ccb2c62 100644
--- a/lcl/interfaces/win32/win32object.inc
+++ b/lcl/interfaces/win32/win32object.inc
@@ -265,8 +265,6 @@ Begin
   Case LM_Message Of
     LM_CREATE:
       CreateComponent(Sender);
-    LM_SETVALUE:
-      Result := SetValue(Sender, Data);
     LM_SETPROPERTIES:
       Result := SetProperties(Sender);
     LM_SETDESIGNING:
@@ -1677,70 +1675,6 @@ begin
   Result := Windows.GetPixel(CanvasHandle, X, Y);
 end;
 
-{------------------------------------------------------------------------------
-  Method: TWin32WidgetSet.SetValue
-  Params:  Sender - the lcl object which called this func via SendMessage
-           Data   - pointer to component specific variable
-  Returns: currently always 0
-
-  Depending on the CompStyle, this function will apply the parameter 'data'
-  to the Windows object repesenting the lcl-object which called the function.
-
-  This function should be used in cases where the most common property
-  of an object has changed (e.g. the position of a trackbar). If more than
-  one property changed use the SetProperties function instead;
- ------------------------------------------------------------------------------}
-Function TWin32WidgetSet.SetValue(Sender: TObject; Data: Pointer): Integer;
-Var
-  Handle: HWnd;
-  ST: SystemTime;
-  
-Begin
-  Result := 0;     // default if nobody sets it
-
-  If Sender Is TWinControl Then
-    Assert(False, Format('Trace:[TWin32WidgetSet.SetValue] %S', [Sender.ClassName]))
-  Else
-    Assert(False, Format('Trace:WARNING:[TWin32WidgetSet.SetValue] %S --> No Decendant of TWinControl', [Sender.ClassName]));
-
-  Handle := TWinControl(Sender).Handle;
-  If Handle = HWnd(Nil) Then
-    Assert (False, 'Trace:WARNING:[TWin32WidgetSet.SetValue] --> got no window');
-
-  Case TControl(Sender).FCompStyle Of
-    csArrow:
-    Begin
-      // TODO: Add code to implement arrow-widget handling
-    End;
-    csCalendar:
-    Begin
-      With ST Do
-        DecodeDate(TLMCalendar(Data^).Date,WYear,WMonth,WDay);
-      SendMessage(Handle,MCM_SETCURSEL, 0, Integer(@ST));
-    End;
-    csProgressBar:
-      Windows.SendMessage(Handle, PBM_SETPOS, Windows.WPARAM(Data^), 0);
-    csTrackbar:
-    Begin
-      If Handle = HWnd(Nil) Then
-        Exit;
-      Assert(False, 'TRACE:Setting the track bar value.');
-      Windows.SendMessage(Handle, TBM_SETPOS, Windows.WPARAM(True), Windows.LPARAM(Data^));
-    End;
-    csRadioButton, csCheckbox:
-    Begin
-      If TCheckBoxState(Data^) = cbChecked Then
-        Windows.SendMessage(Handle, BM_SETCHECK, Windows.WParam(BST_CHECKED), 0)
-      Else If TCheckboxState(Data^) = cbUnchecked Then
-        Windows.SendMessage(Handle, BM_SETCHECK, Windows.WParam(BST_UNCHECKED), 0)
-      Else
-        Windows.SendMessage(Handle, BM_SETCHECK, Windows.WParam(BST_INDETERMINATE), 0);
-    End
-    Else
-      Assert (True, Format('Trace:WARNING: [TWin32WidgetSet.SetValue] failed for %S', [Sender.ClassName]));
-  End;
-End;
-
 {------------------------------------------------------------------------------
   Method: TWin32WidgetSet.SetProperties
   Params:  Sender - the lcl object which called this func via SenMessage
@@ -1956,6 +1890,9 @@ End;
 
 {
   $Log$
+  Revision 1.276  2004/09/19 18:50:28  micha
+  convert LM_SETVALUE message to interface methods
+
   Revision 1.275  2004/09/18 17:07:58  micha
   convert LM_GETVALUE message to interface method
 
diff --git a/lcl/interfaces/win32/win32wsarrow.pp b/lcl/interfaces/win32/win32wsarrow.pp
index 29b305be97..f5ec7331d6 100644
--- a/lcl/interfaces/win32/win32wsarrow.pp
+++ b/lcl/interfaces/win32/win32wsarrow.pp
@@ -33,7 +33,7 @@ uses
 // To get as little as posible circles,
 // uncomment only when needed for registration
 ////////////////////////////////////////////////////
-//  Arrow,
+  Arrow,
 ////////////////////////////////////////////////////
   WSArrow, WSLCLClasses;
 
@@ -45,11 +45,21 @@ type
   private
   protected
   public
+    class procedure SetType(const AArrow: TArrow; const AArrowType: TArrowType; 
+      const AShadowType: TShadowType); override;
   end;
 
 
 implementation
 
+{ TWin32WSArrow }
+
+procedure TWin32WSArrow.SetType(const AArrow: TArrow; const AArrowType: TArrowType;
+  const AShadowType: TShadowType);
+begin
+  // TODO: implement me!
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
@@ -58,6 +68,6 @@ initialization
 // To improve speed, register only classes
 // which actually implement something
 ////////////////////////////////////////////////////
-//  RegisterWSComponent(TArrow, TWin32WSArrow);
+  RegisterWSComponent(TArrow, TWin32WSArrow);
 ////////////////////////////////////////////////////
 end.
diff --git a/lcl/interfaces/win32/win32wscalendar.pp b/lcl/interfaces/win32/win32wscalendar.pp
index dc4c4f6824..2788e7a1dc 100644
--- a/lcl/interfaces/win32/win32wscalendar.pp
+++ b/lcl/interfaces/win32/win32wscalendar.pp
@@ -46,6 +46,9 @@ type
   protected
   public
     class function  GetDateTime(const ACalendar: TCustomCalendar): TDateTime; override;
+    class procedure SetDateTime(const ACalendar: TCustomCalendar; const ADateTime: TDateTime); override;
+    class procedure SetDisplaySettings(const ACalendar: TCustomCalendar; const ASettings: TDisplaySettings); override;
+    class procedure SetReadOnly(const ACalendar: TCustomCalendar; const AReadOnly: boolean); override;
   end;
 
 
@@ -60,6 +63,24 @@ begin
     Result := EncodeDate(WYear,WMonth,WDay);
 end;
 
+procedure TWin32WSCalendar.SetDateTime(const ACalendar: TCustomCalendar; const ADateTime: TDateTime);
+var
+  ST: SystemTime;
+begin
+  DecodeDate(ADateTime, ST.WYear, ST.WMonth, ST.WDay);
+  SendMessage(ACalendar.Handle, MCM_SETCURSEL, 0, Windows.LParam(@ST));
+end;
+
+procedure TWin32WSCalendar.SetDisplaySettings(const ACalendar: TCustomCalendar; const ASettings: TDisplaySettings);
+begin
+  // TODO: implement me!
+end;
+
+procedure TWin32WSCalendar.SetReadOnly(const ACalendar: TCustomCalendar; const AReadOnly: boolean);
+begin
+  // TODO: implement me!
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
diff --git a/lcl/interfaces/win32/win32wscomctrls.pp b/lcl/interfaces/win32/win32wscomctrls.pp
index fe73d4cbac..09e17ba4e8 100644
--- a/lcl/interfaces/win32/win32wscomctrls.pp
+++ b/lcl/interfaces/win32/win32wscomctrls.pp
@@ -103,6 +103,7 @@ type
   private
   protected
   public
+    class procedure SetPosition(const AProgressBar: TProgressBar; const NewPosition: integer); override;
   end;
 
   { TWin32WSCustomUpDown }
@@ -149,6 +150,7 @@ type
   protected
   public
     class function  GetPosition(const ATrackBar: TCustomTrackBar): integer; override;
+    class procedure SetPosition(const ATrackBar: TCustomTrackBar; const NewPosition: integer); override;
   end;
 
   { TWin32WSCustomTreeView }
@@ -454,6 +456,13 @@ begin
   ListView_EnsureVisible(ALV.Handle, AIndex, Ord(PartialOK));
 end;
 
+{ TWin32WSProgressBar }
+
+procedure TWin32WSProgressBar.SetPosition(const AProgressBar: TProgressBar; const NewPosition: integer);
+begin
+  Windows.SendMessage(AProgressBar.Handle, PBM_SETPOS, Windows.WPARAM(NewPosition), 0);
+end;
+
 { TWin32WSToolbar}
 
 {$ifdef OldToolbar}
@@ -530,6 +539,11 @@ begin
     Result := 0;
 end;
 
+procedure TWin32WSTrackBar.SetPosition(const ATrackBar: TCustomTrackBar; const NewPosition: integer);
+begin
+  Windows.SendMessage(ATrackBar.Handle, TBM_SETPOS, Windows.WPARAM(true), Windows.LPARAM(NewPosition));
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
@@ -543,7 +557,7 @@ initialization
 //  RegisterWSComponent(TCustomPageControl, TWin32WSPageControl);
   RegisterWSComponent(TCustomListView, TWin32WSCustomListView);
 //  RegisterWSComponent(TCustomListView, TWin32WSListView);
-//  RegisterWSComponent(TCustomProgressBar, TWin32WSProgressBar);
+  RegisterWSComponent(TProgressBar, TWin32WSProgressBar);
 //  RegisterWSComponent(TCustomUpDown, TWin32WSCustomUpDown);
 //  RegisterWSComponent(TCustomUpDown, TWin32WSUpDown);
 //  RegisterWSComponent(TCustomToolButton, TWin32WSToolButton);
diff --git a/lcl/interfaces/win32/win32wsstdctrls.pp b/lcl/interfaces/win32/win32wsstdctrls.pp
index da485fa969..fe6cd3d3b6 100644
--- a/lcl/interfaces/win32/win32wsstdctrls.pp
+++ b/lcl/interfaces/win32/win32wsstdctrls.pp
@@ -191,6 +191,7 @@ type
     class function  RetrieveState(const ACustomCheckBox: TCustomCheckBox): TCheckBoxState; override;
     class procedure SetShortCut(const ACustomCheckBox: TCustomCheckBox;
           const OldShortCut, NewShortCut: TShortCut); override;
+    class procedure SetState(const ACustomCheckBox: TCustomCheckBox; const NewState: TCheckBoxState); override;
   end;
 
   { TWin32WSCheckBox }
@@ -526,6 +527,19 @@ begin
   // TODO: implement me!
 end;
 
+procedure TWin32WSCustomCheckBox.SetState(const ACustomCheckBox: TCustomCheckBox; const NewState: TCheckBoxState);
+var
+  Flags: WPARAM;
+begin
+  case NewState of
+    cbChecked: Flags := Windows.WParam(BST_CHECKED);
+    cbUnchecked: Flags := Windows.WParam(BST_UNCHECKED);
+  else
+    Flags := Windows.WParam(BST_INDETERMINATE);
+  end;
+  Windows.SendMessage(ACustomCheckBox.Handle, BM_SETCHECK, Flags, 0);
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
diff --git a/lcl/lmessages.pp b/lcl/lmessages.pp
index 201d4dce95..1b7405c3cf 100644
--- a/lcl/lmessages.pp
+++ b/lcl/lmessages.pp
@@ -57,7 +57,6 @@ const
   LM_CANVASCREATE   = LM_ComUser+19;
 
   LM_SETPROPERTIES  = LM_ComUser+39;         // update object to reflect current properties
-  LM_SETVALUE       = LM_ComUser+40;         // set actual value of object to visual object
 
   LM_MINIMIZE       = LM_COMUSER+59;
 
@@ -777,7 +776,6 @@ begin
   LM_CANVASCREATE   :Result:='LM_CANVASCREATE';
 
   LM_SETPROPERTIES  :Result:='LM_SETPROPERTIES';
-  LM_SETVALUE       :Result:='LM_SETVALUE';
 
   LM_MINIMIZE       :Result:='LM_MINIMIZE';
 
@@ -895,6 +893,9 @@ end.
 
 {
   $Log$
+  Revision 1.114  2004/09/19 18:50:28  micha
+  convert LM_SETVALUE message to interface methods
+
   Revision 1.113  2004/09/18 17:07:57  micha
   convert LM_GETVALUE message to interface method
 
diff --git a/lcl/widgetset/wsarrow.pp b/lcl/widgetset/wsarrow.pp
index b1dab6e681..44aa27e109 100644
--- a/lcl/widgetset/wsarrow.pp
+++ b/lcl/widgetset/wsarrow.pp
@@ -44,19 +44,29 @@ uses
 // To get as little as posible circles,
 // uncomment only when needed for registration
 ////////////////////////////////////////////////////
-//  Arrow,
+  Arrow,
 ////////////////////////////////////////////////////
   WSLCLClasses, WSControls;
 
 type
   { TWSArrow }
-
+  
+  TWSArrowClass = class of TWSArrow;
   TWSArrow = class(TWSCustomControl)
+    class procedure SetType(const AArrow: TArrow; const AArrowType: TArrowType; 
+      const AShadowType: TShadowType); virtual;
   end;
 
 
 implementation
 
+{ TWSArrow }
+
+procedure TWSArrow.SetType(const AArrow: TArrow; const AArrowType: TArrowType; 
+  const AShadowType: TShadowType);
+begin
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
diff --git a/lcl/widgetset/wscalendar.pp b/lcl/widgetset/wscalendar.pp
index 2948d8f7a1..bde008cb75 100644
--- a/lcl/widgetset/wscalendar.pp
+++ b/lcl/widgetset/wscalendar.pp
@@ -53,17 +53,34 @@ type
 
   TWSCalendarClass = class of TWSCalendar;
   TWSCalendar = class(TWSWinControl)
-    class function  GetDateTime(const ACalender: TCustomCalendar): TDateTime; virtual;
+    class function  GetDateTime(const ACalendar: TCustomCalendar): TDateTime; virtual;
+    class procedure SetDateTime(const ACalendar: TCustomCalendar; const ADateTime: TDateTime); virtual;
+    class procedure SetDisplaySettings(const ACalendar: TCustomCalendar; 
+      const ADisplaySettings: TDisplaySettings); virtual;
+    class procedure SetReadOnly(const ACalendar: TCustomCalendar; const AReadOnly: boolean); virtual;
   end;
 
 
 implementation
 
-function  TWSCalendar.GetDateTime(const ACalender: TCustomCalendar): TDateTime;
+function  TWSCalendar.GetDateTime(const ACalendar: TCustomCalendar): TDateTime;
 begin
   Result := 0.0;
 end;
 
+procedure TWSCalendar.SetDateTime(const ACalendar: TCustomCalendar; const ADateTime: TDateTime);
+begin
+end;
+
+procedure TWSCalendar.SetDisplaySettings(const ACalendar: TCustomCalendar; 
+  const ADisplaySettings: TDisplaySettings);
+begin
+end;
+
+procedure TWSCalendar.SetReadOnly(const ACalendar: TCustomCalendar; const AReadOnly: boolean);
+begin
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
diff --git a/lcl/widgetset/wscomctrls.pp b/lcl/widgetset/wscomctrls.pp
index 12ab65231a..e41eea311f 100644
--- a/lcl/widgetset/wscomctrls.pp
+++ b/lcl/widgetset/wscomctrls.pp
@@ -101,7 +101,9 @@ type
 
   { TWSProgressBar }
 
+  TWSProgressBarClass = class of TWSProgressBar;
   TWSProgressBar = class(TWSWinControl)
+    class procedure SetPosition(const AProgressBar: TProgressBar; const NewPosition: integer); virtual;
   end;
 
   { TWSCustomUpDown }
@@ -135,6 +137,7 @@ type
   TWSTrackBarClass = class of TWSTrackBar;
   TWSTrackBar = class(TWSWinControl)
     class function  GetPosition(const ATrackBar: TCustomTrackBar): integer; virtual;
+    class procedure SetPosition(const ATrackBar: TCustomTrackBar; const NewPosition: integer); virtual;
   end;
 
   { TWSCustomTreeView }
@@ -231,6 +234,12 @@ procedure TWSCustomListView.ItemShow(const ALV: TCustomListView; const AIndex: I
 begin
 end;
 
+{ TWSProgressBar }
+
+procedure TWSProgressBar.SetPosition(const AProgressBar: TProgressBar; const NewPosition: integer);
+begin
+end;
+
 { TWSToolbar }
 
 {$ifdef OldToolbar}
@@ -257,6 +266,10 @@ begin
   Result := 0;
 end;
 
+procedure TWSTrackBar.SetPosition(const ATrackBar: TCustomTrackBar; const NewPosition: integer);
+begin
+end;
+
 initialization
 
 ////////////////////////////////////////////////////
diff --git a/lcl/widgetset/wsstdctrls.pp b/lcl/widgetset/wsstdctrls.pp
index 476b42f45a..688bbc7f84 100644
--- a/lcl/widgetset/wsstdctrls.pp
+++ b/lcl/widgetset/wsstdctrls.pp
@@ -160,6 +160,7 @@ type
     class function  RetrieveState(const ACustomCheckBox: TCustomCheckBox): TCheckBoxState; virtual;
     class procedure SetShortCut(const ACustomCheckBox: TCustomCheckBox; 
       const OldShortCut, NewShortCut: TShortCut); virtual;
+    class procedure SetState(const ACustomCheckBox: TCustomCheckBox; const NewState: TCheckBoxState); virtual;
   end;
 
   { TWSCheckBox }
@@ -321,6 +322,10 @@ procedure TWSCustomCheckBox.SetShortCut(const ACustomCheckBox: TCustomCheckBox;
 begin
 end;
 
+procedure TWSCustomCheckBox.SetState(const ACustomCheckBox: TCustomCheckBox; const NewState: TCheckBoxState);
+begin
+end;
+
 initialization
 
 ////////////////////////////////////////////////////