diff --git a/lcl/interfaces/gtk2/gtk2callback.inc b/lcl/interfaces/gtk2/gtk2callback.inc
index f3ca7be97f..998bdc2ffc 100644
--- a/lcl/interfaces/gtk2/gtk2callback.inc
+++ b/lcl/interfaces/gtk2/gtk2callback.inc
@@ -714,7 +714,6 @@ begin
   if (Widget=nil) or (Event=nil) then ;
 
   ResetDefaultIMContext;
-  UpdateMouseCaptureControl;
 
   FillChar(Mess{%H-},SizeOf(Mess),#0);
   {$IFDEF VerboseFocus}
@@ -791,7 +790,6 @@ begin
     DebugLn(' LCLObject=nil');
   {$ENDIF}
   ResetDefaultIMContext;
-  UpdateMouseCaptureControl;
 
   Info := GetWidgetInfo(Widget,false);
   try
@@ -962,7 +960,6 @@ begin
   end;
 
   ResetDefaultIMContext;
-  UpdateMouseCaptureControl;
 
   //TODO: fill in old focus
   FillChar(Mess{%H-}, SizeOf(Mess), 0);
@@ -1069,7 +1066,6 @@ begin
   {$ENDIF}
 
   ResetDefaultIMContext;
-  UpdateMouseCaptureControl;
 
   FillChar(Mess{%H-},SizeOf(Mess),0);
   Mess.msg := LM_KILLFOCUS;
@@ -1445,8 +1441,6 @@ begin
     );
   {$ENDIF}
 
-  UpdateMouseCaptureControl;
-  
   ShiftState := GTKEventStateToShiftState(Event^.State);
 
   if (ShiftState*[ssShift, ssCtrl, ssAlt, ssSuper] <> LastModifierKeys) or NeedShiftUpdateAfternFocus
@@ -1518,8 +1512,6 @@ begin
   // stop the signal, so that it is not sent to the parent widgets
   g_signal_stop_emission_by_name(PGTKObject(Widget),'motion-notify-event');
 
-  UpdateMouseCaptureControl;
-
   if (csDesigning in TComponent(Data).ComponentState) then exit;
   if ControlGetsMouseMoveBefore(TControl(Data), True, Event) then exit;
 
@@ -1782,7 +1774,6 @@ begin
   {$ENDIF}
 
   ResetDefaultIMContext;
-  UpdateMouseCaptureControl;
 
   //debugln('[gtkMouseBtnPress] calling DeliverMouseDownMessage Result=',dbgs(Result));
   {$IFDEF Gtk2CallMouseDownBeforeContext}
@@ -2108,7 +2099,6 @@ begin
   {$ENDIF}
 
   ResetDefaultIMContext;
-  UpdateMouseCaptureControl;
 
   // stop the signal, so that it is not sent to the parent widgets
   g_signal_stop_emission_by_name(PGTKObject(Widget), 'button-press-event');
@@ -2242,7 +2232,6 @@ begin
   //' GDK_BUTTON_RELEASE_MASK=',DbgS(GDK_BUTTON_RELEASE_MASK));
 
   ResetDefaultIMContext;
-  UpdateMouseCaptureControl;
 
   if not (csDesigning in TComponent(Data).ComponentState) then
   begin
@@ -2301,7 +2290,6 @@ begin
   g_signal_stop_emission_by_name(PGTKObject(Widget),'button-release-event');
 
   ResetDefaultIMContext;
-  UpdateMouseCaptureControl;
 
   if (csDesigning in TComponent(Data).ComponentState) then exit;
   if ControlGetsMouseUpBefore(TControl(Data)) then exit;
diff --git a/lcl/interfaces/gtk2/gtk2proc.inc b/lcl/interfaces/gtk2/gtk2proc.inc
index a54514a0fc..2a15682533 100644
--- a/lcl/interfaces/gtk2/gtk2proc.inc
+++ b/lcl/interfaces/gtk2/gtk2proc.inc
@@ -4566,46 +4566,6 @@ begin
   end;
 end;
 
-{------------------------------------------------------------------------------
-  Function: UpdateMouseCaptureControl
-  Params: none
-  Returns:  none
-
-  Sets MouseCaptureWidget to the current capturing widget.
- ------------------------------------------------------------------------------}
-procedure UpdateMouseCaptureControl;
-var
-  OldMouseCaptureWidget,
-  CurMouseCaptureWidget: PGtkWidget;
-begin
-  {$IFNDEF GTK2_USE_OLD_CAPTURE}
-  exit;
-  {$ENDIF}
-  OldMouseCaptureWidget:=MouseCaptureWidget;
-  CurMouseCaptureWidget:=gtk_grab_get_current;
-
-  if OldMouseCaptureWidget<>CurMouseCaptureWidget then begin
-    // the mouse grab changed
-    // -> this means the gtk itself has changed the mouse grab
-    {$IFDEF VerboseMouseCapture}
-    DebugLn('UpdateMouseCaptureControl Capture changed from ',
-      '[',GetWidgetDebugReport(OldMouseCaptureWidget),' type=',MouseCaptureTypeNames[MouseCaptureType],']',
-      ' to [',GetWidgetDebugReport(CurMouseCaptureWidget),' type=GTK]');
-    if CurMouseCaptureWidget<>nil then
-    DebugLn('parent ',    GetWidgetDebugReport(CurMouseCaptureWidget^.Parent));
-    {$ENDIF}
-
-    // notify the new capture control
-    MouseCaptureWidget:=CurMouseCaptureWidget;
-    MouseCaptureType:=mctGTK;
-    if MouseCaptureWidget<>nil then begin
-      // the MouseCaptureWidget is probably not a main widget
-      SendMessage(HWnd({%H-}PtrUInt(MouseCaptureWidget)), LM_CAPTURECHANGED, 0,
-        HWnd({%H-}PtrUInt(OldMouseCaptureWidget)));
-    end;
-  end;
-end;
-
 procedure IncreaseMouseCaptureIndex;
 begin
   if MouseCaptureIndex<$ffffffff then
@@ -4614,49 +4574,6 @@ begin
     MouseCaptureIndex:=0;
 end;
 
-{$IFDEF GTK2_USE_OLD_CAPTURE}
-procedure CaptureMouseForWidget(Widget: PGtkWidget; Owner: TMouseCaptureType);
-var
-  CaptureWidget: PGtkWidget;
-  NowIndex: Cardinal;
-begin
-  {$IFDEF VerboseMouseCapture}
-  DebugLn('CaptureMouseForWidget START ',GetWidgetDebugReport(Widget));
-  {$ENDIF}
-  if not (Owner in [mctGTKIntf,mctLCL]) then exit;
-  // not every widget can capture the mouse
-  CaptureWidget := GetDefaultMouseCaptureWidget(Widget);
-  if CaptureWidget=nil then exit;
-
-  UpdateMouseCaptureControl;
-  if (MouseCaptureType<>mctGTK) then begin
-    // we are capturing
-    if (MouseCaptureWidget=CaptureWidget) then begin
-      // we are already capturing this widget
-      exit;
-    end;
-    // release old capture
-    ReleaseMouseCapture;
-  end;
-
-  {$IFDEF VerboseMouseCapture}
-  DebugLn('CaptureMouseForWidget Start Capturing for ',GetWidgetDebugReport(CaptureWidget));
-  {$ENDIF}
-  IncreaseMouseCaptureIndex;
-  NowIndex:=MouseCaptureIndex;
-  if not gtk_widget_has_focus(CaptureWidget) then
-    gtk_widget_grab_focus(CaptureWidget);
-  if NowIndex=MouseCaptureIndex then begin
-    {$IFDEF VerboseMouseCapture}
-    DebugLn('CaptureMouseForWidget Commit Capturing for ',GetWidgetDebugReport(CaptureWidget));
-    {$ENDIF}
-    MouseCaptureWidget:=CaptureWidget;
-    MouseCaptureType:=Owner;
-    gtk_grab_add(CaptureWidget);
-  end;
-end;
-{$ENDIF}
-
 function GetDefaultMouseCaptureWidget(Widget: PGtkWidget
   ): PGtkWidget;
 var
@@ -4717,9 +4634,6 @@ begin
           Result := WidgetInfo^.ClientWidget
         else
           Result := WidgetInfo^.CoreWidget;
-      {$IFDEF GTK2_USE_OLD_CAPTURE}
-      end;
-      {$ELSE}
       end else
       if GTK_IS_SCROLLED_WINDOW(Widget) and (GTK_IS_BIN(Widget)) then
       begin
@@ -4728,7 +4642,6 @@ begin
         {$ENDIF}
         Result := gtk_bin_get_child(PGtkBin(Widget));
       end;
-      {$ENDIF}
     end;
   end;
 end;
diff --git a/lcl/interfaces/gtk2/gtk2proc.pp b/lcl/interfaces/gtk2/gtk2proc.pp
index ddaa07a9fd..f0b8b88865 100644
--- a/lcl/interfaces/gtk2/gtk2proc.pp
+++ b/lcl/interfaces/gtk2/gtk2proc.pp
@@ -470,13 +470,9 @@ function TranslateGdkPointToClientArea(SourceWindow: PGdkWindow;
 function SubtractScoll(AWidget: PGtkWidget; APosition: TPoint): TPoint;
 
 // mouse capturing
-{$IFDEF GTK2_USE_OLD_CAPTURE}
-procedure CaptureMouseForWidget(Widget: PGtkWidget; Owner: TMouseCaptureType);
-{$ENDIF}
 function GetDefaultMouseCaptureWidget(Widget: PGtkWidget): PGtkWidget;
 procedure ReleaseMouseCapture;
 procedure ReleaseCaptureWidget(Widget : PGtkWidget);
-procedure UpdateMouseCaptureControl;
 
 
 const
diff --git a/lcl/interfaces/gtk2/gtk2winapi.inc b/lcl/interfaces/gtk2/gtk2winapi.inc
index 0c3d673c76..a2c220380e 100644
--- a/lcl/interfaces/gtk2/gtk2winapi.inc
+++ b/lcl/interfaces/gtk2/gtk2winapi.inc
@@ -8275,9 +8275,7 @@ end;
 function TGtk2WidgetSet.SetCapture(AHandle: HWND): HWND;
 var
   Widget: PGtkWidget;
-  {$IFNDEF GTK2_USE_OLD_CAPTURE}
   CaptureWidget: PGtkWidget;
-  {$ENDIF}
 begin
   Widget := {%H-}PGtkWidget(AHandle);
   {$IfDef VerboseMouseCapture}
@@ -8287,11 +8285,6 @@ begin
   // return old capture handle
   Result := GetCapture;
 
-  {$IFDEF GTK2_USE_OLD_CAPTURE}
-  // capture
-  CaptureMouseForWidget(Widget, mctLCL);
-  {$ELSE}
-
   if Result <> 0 then
     gtk_grab_remove(gtk_grab_get_current);
 
@@ -8307,7 +8300,6 @@ begin
   MouseCaptureWidget := CaptureWidget;
   if MouseCaptureWidget<>nil then
     SendMessage(HWnd({%H-}PtrUInt(MouseCaptureWidget)), LM_CAPTURECHANGED, 0, Result);
-  {$ENDIF}
 end;
 
 {------------------------------------------------------------------------------