loplugin:countusersofdefaultparams in vcl

Change-Id: I046e6f16c5b171a06e2be2da2f72340634f3e979
Reviewed-on: https://gerrit.libreoffice.org/28891
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>

39 files changed, 51 insertions, 54 deletions

diff --git a/include/sfx2/sidebar/SidebarToolBox.hxx b/include/sfx2/sidebar/SidebarToolBox.hxx
index 893e8cecf16f..85290a1b3c5b 100644
--- a/include/sfx2/sidebar/SidebarToolBox.hxx
+++ b/include/sfx2/sidebar/SidebarToolBox.hxx
@@ -49,7 +49,7 @@ public:
     virtual void InsertItem(const OUString& rCommand,
             const css::uno::Reference<css::frame::XFrame>& rFrame,
             ToolBoxItemBits nBits,
-            const Size& rRequestedSize = Size(),
+            const Size& rRequestedSize,
             sal_uInt16 nPos = TOOLBOX_APPEND) override;
 
     virtual bool Notify (NotifyEvent& rEvent) override;
diff --git a/include/vcl/animate.hxx b/include/vcl/animate.hxx
index f240af792ea7..75503dea309d 100644
--- a/include/vcl/animate.hxx
+++ b/include/vcl/animate.hxx
@@ -102,7 +102,7 @@ public:
                         const Point& rDestPt,
                         const Size& rDestSz,
                         long nExtraData,
-                        OutputDevice* pFirstFrameOutDev = nullptr);
+                        OutputDevice* pFirstFrameOutDev);
 
     void            Stop( OutputDevice* pOutDev = nullptr, long nExtraData = 0 );
 
@@ -143,7 +143,7 @@ public:
     bool            Mirror( BmpMirrorFlags nMirrorFlags );
     bool            Adjust(
                         short nLuminancePercent,
-                        short nContrastPercent = 0,
+                        short nContrastPercent,
                         short nChannelRPercent = 0,
                         short nChannelGPercent = 0,
                         short nChannelBPercent = 0,
diff --git a/include/vcl/bitmap.hxx b/include/vcl/bitmap.hxx
index e206700e8e34..d3035bf253f0 100644
--- a/include/vcl/bitmap.hxx
+++ b/include/vcl/bitmap.hxx
@@ -634,7 +634,7 @@ public:
     bool                    Vectorize(
                                 GDIMetaFile& rMtf,
                                 sal_uInt8 cReduce,
-                                const Link<long,void>* pProgress = nullptr );
+                                const Link<long,void>* pProgress );
 
     /** Change various global color characteristics
 
diff --git a/include/vcl/bitmapex.hxx b/include/vcl/bitmapex.hxx
index 8912eae95649..115e35316dde 100644
--- a/include/vcl/bitmapex.hxx
+++ b/include/vcl/bitmapex.hxx
@@ -326,7 +326,7 @@ public:
      */
     bool                Adjust(
                             short nLuminancePercent,
-                            short nContrastPercent = 0,
+                            short nContrastPercent,
                             short nChannelRPercent = 0,
                             short nChannelGPercent = 0,
                             short nChannelBPercent = 0,
@@ -409,7 +409,7 @@ public:
                             const basegfx::B2DHomMatrix& rTransformation,
                             const basegfx::B2DRange& rVisibleRange,
                             double fMaximumArea,
-                            bool bSmooth = true) const;
+                            bool bSmooth) const;
 
     /** Create ColorStack-modified version of this BitmapEx
 
diff --git a/include/vcl/btndlg.hxx b/include/vcl/btndlg.hxx
index fbb36e9eed31..4d54f8efd0c5 100644
--- a/include/vcl/btndlg.hxx
+++ b/include/vcl/btndlg.hxx
@@ -50,7 +50,7 @@ namespace o3tl
 class VCL_DLLPUBLIC ButtonDialog : public Dialog
 {
 public:
-                        ButtonDialog( vcl::Window* pParent, WinBits nStyle = WB_STDDIALOG );
+                        ButtonDialog( vcl::Window* pParent, WinBits nStyle );
     virtual             ~ButtonDialog() override;
     virtual void        dispose() override;
 
diff --git a/include/vcl/button.hxx b/include/vcl/button.hxx
index 1d425de57c92..8350a212b396 100644
--- a/include/vcl/button.hxx
+++ b/include/vcl/button.hxx
@@ -523,7 +523,7 @@ class VCL_DLLPUBLIC TriStateBox : public CheckBox
                     TriStateBox & operator= ( const TriStateBox & ) = delete;
 
 public:
-    explicit        TriStateBox( vcl::Window* pParent, WinBits nStyle = 0 );
+    explicit        TriStateBox( vcl::Window* pParent, WinBits nStyle );
 };
 
 class VCL_DLLPUBLIC DisclosureButton : public CheckBox
diff --git a/include/vcl/commandevent.hxx b/include/vcl/commandevent.hxx
index eb8fab19c5de..5b9cc09a7eaa 100644
--- a/include/vcl/commandevent.hxx
+++ b/include/vcl/commandevent.hxx
@@ -151,7 +151,7 @@ public:
                     CommandWheelData( long nWheelDelta, long nWheelNotchDelta,
                                       sal_uLong nScrollLines,
                                       CommandWheelMode nWheelMode, sal_uInt16 nKeyModifier,
-                                      bool bHorz = false, bool bDeltaIsPixel = false );
+                                      bool bHorz, bool bDeltaIsPixel = false );
 
     long            GetDelta() const { return mnDelta; }
     long            GetNotchDelta() const { return mnNotchDelta; }
@@ -208,7 +208,7 @@ class VCL_DLLPUBLIC CommandDialogData
 {
     ShowDialogId   m_nDialogId;
 public:
-    CommandDialogData( ShowDialogId nDialogId = ShowDialogId::Preferences )
+    CommandDialogData( ShowDialogId nDialogId )
     : m_nDialogId( nDialogId )
     {}
 
diff --git a/include/vcl/dockwin.hxx b/include/vcl/dockwin.hxx
index 9647fc7494e2..a3d0a7bcfce3 100644
--- a/include/vcl/dockwin.hxx
+++ b/include/vcl/dockwin.hxx
@@ -274,7 +274,7 @@ protected:
                     DockingWindow( WindowType nType );
 
 public:
-    DockingWindow(vcl::Window* pParent, WinBits nStyle = WB_STDDOCKWIN);
+    DockingWindow(vcl::Window* pParent, WinBits nStyle);
     DockingWindow(vcl::Window* pParent, const OString& rID, const OUString& rUIXMLDescription,
         const css::uno::Reference<css::frame::XFrame> &rFrame = css::uno::Reference<css::frame::XFrame>());
     virtual ~DockingWindow() override;
diff --git a/include/vcl/fixed.hxx b/include/vcl/fixed.hxx
index 97e1e5ab66ca..85f3a234a641 100644
--- a/include/vcl/fixed.hxx
+++ b/include/vcl/fixed.hxx
@@ -82,7 +82,7 @@ public:
 class VCL_DLLPUBLIC SelectableFixedText : public Edit
 {
 public:
-    explicit SelectableFixedText( vcl::Window* pParent, WinBits nStyle = 0 );
+    explicit SelectableFixedText( vcl::Window* pParent, WinBits nStyle );
 
     virtual void    LoseFocus() override;
     virtual void    ApplySettings(vcl::RenderContext&) override;
diff --git a/include/vcl/floatwin.hxx b/include/vcl/floatwin.hxx
index 8933bf97d6e4..c1e0d3008565 100644
--- a/include/vcl/floatwin.hxx
+++ b/include/vcl/floatwin.hxx
@@ -126,13 +126,13 @@ public:
                                                  sal_uInt16& rArrangeIndex );
                    static Point     ImplConvertToAbsPos(vcl::Window* pReference, const Point& rPos);
                    static Rectangle ImplConvertToAbsPos(vcl::Window* pReference, const Rectangle& rRect);
-    SAL_DLLPRIVATE void             ImplEndPopupMode( FloatWinPopupEndFlags nFlags, const VclPtr<vcl::Window>& xFocusId = nullptr );
+    SAL_DLLPRIVATE void             ImplEndPopupMode( FloatWinPopupEndFlags nFlags, const VclPtr<vcl::Window>& xFocusId );
     SAL_DLLPRIVATE Rectangle&       ImplGetItemEdgeClipRect();
     SAL_DLLPRIVATE bool             ImplIsInPrivatePopupMode() const { return mbInPopupMode; }
     virtual        void             doDeferredInit(WinBits nBits) override;
 
 public:
-    explicit        FloatingWindow(vcl::Window* pParent, WinBits nStyle = WB_STDFLOATWIN);
+    explicit        FloatingWindow(vcl::Window* pParent, WinBits nStyle);
     explicit        FloatingWindow(vcl::Window* pParent, const OString& rID, const OUString& rUIXMLDescription,
                                    const css::uno::Reference<css::frame::XFrame> &rFrame = css::uno::Reference<css::frame::XFrame>());
     virtual         ~FloatingWindow() override;
diff --git a/include/vcl/gdimtf.hxx b/include/vcl/gdimtf.hxx
index 5e1567b84dee..61d5a44feeb1 100644
--- a/include/vcl/gdimtf.hxx
+++ b/include/vcl/gdimtf.hxx
@@ -129,7 +129,7 @@ public:
     */
     Rectangle       GetBoundRect( OutputDevice& i_rReference, Rectangle* pHairline = nullptr ) const;
 
-    void            Adjust( short nLuminancePercent, short nContrastPercent = 0,
+    void            Adjust( short nLuminancePercent, short nContrastPercent,
                             short nChannelRPercent = 0,  short nChannelGPercent = 0,
                             short nChannelBPercent = 0,  double fGamma = 1.0,
                             bool bInvert = false, bool msoBrightness = false );
diff --git a/include/vcl/graph.hxx b/include/vcl/graph.hxx
index f7140627f052..1e8c076e0bab 100644
--- a/include/vcl/graph.hxx
+++ b/include/vcl/graph.hxx
@@ -180,7 +180,7 @@ public:
                           long nExtraData = 0L,
                           OutputDevice* pFirstFrameOutDev = nullptr );
     void            StopAnimation( OutputDevice* pOutputDevice,
-                          long nExtraData = 0L );
+                          long nExtraData );
 
     void            SetAnimationNotifyHdl( const Link<Animation*,void>& rLink );
     Link<Animation*,void> GetAnimationNotifyHdl() const;
diff --git a/include/vcl/graphicfilter.hxx b/include/vcl/graphicfilter.hxx
index f1e89efef563..4102c84ab19e 100644
--- a/include/vcl/graphicfilter.hxx
+++ b/include/vcl/graphicfilter.hxx
@@ -190,7 +190,7 @@ public:
         As some formats (Mtf's) do not have a unique header, it makes sense
         to supply the file name (incl. ext.), so that the format can be
         derived from the extension */
-    GraphicDescriptor( SvStream& rInStream, const OUString* pPath = nullptr );
+    GraphicDescriptor( SvStream& rInStream, const OUString* pPath );
 
     virtual ~GraphicDescriptor();
 
@@ -274,8 +274,8 @@ public:
     bool            IsExportPixelFormat( sal_uInt16 nFormat );
 
     sal_uInt16          ExportGraphic( const Graphic& rGraphic, const INetURLObject& rPath,
-                                    sal_uInt16 nFormat,
-                                        const css::uno::Sequence< css::beans::PropertyValue >* pFilterData = nullptr );
+                                       sal_uInt16 nFormat,
+                                       const css::uno::Sequence< css::beans::PropertyValue >* pFilterData = nullptr );
     sal_uInt16          ExportGraphic( const Graphic& rGraphic, const OUString& rPath,
                                     SvStream& rOStm, sal_uInt16 nFormat,
                                         const css::uno::Sequence< css::beans::PropertyValue >* pFilterData = nullptr );
diff --git a/include/vcl/group.hxx b/include/vcl/group.hxx
index 3c44b8c1ca9d..a66b1342eda1 100644
--- a/include/vcl/group.hxx
+++ b/include/vcl/group.hxx
@@ -43,7 +43,7 @@ private:
                     GetCanonicalTextColor( const StyleSettings& _rStyle ) const override;
 
 public:
-    explicit        GroupBox( vcl::Window* pParent, WinBits nStyle = 0 );
+    explicit        GroupBox( vcl::Window* pParent, WinBits nStyle );
 
     virtual void    Paint( vcl::RenderContext& rRenderContext, const Rectangle& rRect ) override;
     virtual void    Draw( OutputDevice* pDev, const Point& rPos, const Size& rSize, DrawFlags nFlags ) override;
diff --git a/include/vcl/hatch.hxx b/include/vcl/hatch.hxx
index 41b9b9570a61..3b326b4642c5 100644
--- a/include/vcl/hatch.hxx
+++ b/include/vcl/hatch.hxx
@@ -48,7 +48,7 @@ public:
 
                     Hatch();
                     Hatch( const Hatch& rHatch );
-                    Hatch( HatchStyle eStyle, const Color& rHatchColor, long nDistance, sal_uInt16 nAngle10 = 0 );
+                    Hatch( HatchStyle eStyle, const Color& rHatchColor, long nDistance, sal_uInt16 nAngle10 );
                     ~Hatch();
 
     Hatch&          operator=( const Hatch& rHatch );
diff --git a/include/vcl/imgctrl.hxx b/include/vcl/imgctrl.hxx
index 656bc8321c06..14fe5e60b7a9 100644
--- a/include/vcl/imgctrl.hxx
+++ b/include/vcl/imgctrl.hxx
@@ -32,7 +32,7 @@ private:
     ::sal_Int16     mnScaleMode;
 
 public:
-                    ImageControl( vcl::Window* pParent, WinBits nStyle = 0 );
+                    ImageControl( vcl::Window* pParent, WinBits nStyle );
 
     // set/get the scale mode. This is one of the css.awt.ImageScaleMode constants
     void            SetScaleMode( const ::sal_Int16 _nMode );
diff --git a/include/vcl/layout.hxx b/include/vcl/layout.hxx
index 1713e646f5c8..6f75909dd109 100644
--- a/include/vcl/layout.hxx
+++ b/include/vcl/layout.hxx
@@ -658,7 +658,7 @@ private:
     void create_owned_areas();
 
     friend class VclPtr<MessageDialog>;
-    MessageDialog(vcl::Window* pParent, WinBits nStyle = WB_MOVEABLE | WB_3DLOOK | WB_CLOSEABLE);
+    MessageDialog(vcl::Window* pParent, WinBits nStyle);
 public:
 
     MessageDialog(vcl::Window* pParent,
diff --git a/include/vcl/lstbox.hxx b/include/vcl/lstbox.hxx
index aebdcb37b606..455a82aa184b 100644
--- a/include/vcl/lstbox.hxx
+++ b/include/vcl/lstbox.hxx
@@ -284,7 +284,7 @@ public:
     using ListBox::GetSavedValue;
     using ListBox::IsValueChangedFromSaved;
 
-    explicit        MultiListBox( vcl::Window* pParent, WinBits nStyle = 0 );
+    explicit        MultiListBox( vcl::Window* pParent, WinBits nStyle );
 
 };
 
diff --git a/include/vcl/menubtn.hxx b/include/vcl/menubtn.hxx
index 6c628aa6af96..535ad84b8bfc 100644
--- a/include/vcl/menubtn.hxx
+++ b/include/vcl/menubtn.hxx
@@ -81,7 +81,7 @@ public:
 class VCL_DLLPUBLIC MenuToggleButton : public MenuButton
 {
 public:
-    explicit        MenuToggleButton( vcl::Window* pParent, WinBits nStyle = 0 );
+    explicit        MenuToggleButton( vcl::Window* pParent, WinBits nStyle );
     virtual         ~MenuToggleButton() override;
 
     void            SetActive( bool bSel );
diff --git a/include/vcl/morebtn.hxx b/include/vcl/morebtn.hxx
index 20a76cb17ba1..42043661a46d 100644
--- a/include/vcl/morebtn.hxx
+++ b/include/vcl/morebtn.hxx
@@ -44,7 +44,7 @@ protected:
     SAL_DLLPRIVATE void ImplInit( vcl::Window* pParent, WinBits nStyle );
 
 public:
-    explicit            MoreButton( vcl::Window* pParent, WinBits nStyle = 0 );
+    explicit            MoreButton( vcl::Window* pParent, WinBits nStyle );
     virtual             ~MoreButton() override;
     virtual void        dispose() override;
 
diff --git a/include/vcl/openglwin.hxx b/include/vcl/openglwin.hxx
index e04c0984163a..da8983174dde 100644
--- a/include/vcl/openglwin.hxx
+++ b/include/vcl/openglwin.hxx
@@ -33,7 +33,7 @@ public:
 class VCL_DLLPUBLIC OpenGLWindow : public vcl::Window
 {
 public:
-                   OpenGLWindow(vcl::Window* pParent, bool bInit = true);
+                   OpenGLWindow(vcl::Window* pParent, bool bInit);
     virtual        ~OpenGLWindow() override;
     virtual void   dispose() override;
 
diff --git a/include/vcl/outdev.hxx b/include/vcl/outdev.hxx
index 88b1233cbc56..2be52c33bf6b 100644
--- a/include/vcl/outdev.hxx
+++ b/include/vcl/outdev.hxx
@@ -1314,7 +1314,7 @@ private:
 public:
 
     SystemTextLayoutData        GetSysTextLayoutData( const Point& rStartPt, const OUString& rStr,
-                                                      sal_Int32 nIndex, sal_Int32 nLen = -1,
+                                                      sal_Int32 nIndex, sal_Int32 nLen,
                                                       const long* pDXAry = nullptr ) const;
 
     SAL_DLLPRIVATE bool         ImplIsAntiparallel() const ;
diff --git a/include/vcl/pdfextoutdevdata.hxx b/include/vcl/pdfextoutdevdata.hxx
index a4901ca04dc7..e6468a6ba470 100644
--- a/include/vcl/pdfextoutdevdata.hxx
+++ b/include/vcl/pdfextoutdevdata.hxx
@@ -309,7 +309,7 @@ public:
         @returns
         the outline item id of the new item
     */
-    sal_Int32 CreateOutlineItem( sal_Int32 nParent, const OUString& rText = OUString(), sal_Int32 nDestID = -1 );
+    sal_Int32 CreateOutlineItem( sal_Int32 nParent, const OUString& rText, sal_Int32 nDestID = -1 );
 
     /** Create a new note on a page
 
diff --git a/include/vcl/pdfwriter.hxx b/include/vcl/pdfwriter.hxx
index 625571487742..7775ba406f6c 100644
--- a/include/vcl/pdfwriter.hxx
+++ b/include/vcl/pdfwriter.hxx
@@ -666,7 +666,7 @@ The following structure describes the permissions used in PDF security
         Colors and other state information MUST
         be set again or are undefined.
     */
-    void NewPage( sal_Int32 nPageWidth, sal_Int32 nPageHeight = 0, Orientation eOrientation = Inherit );
+    void NewPage( sal_Int32 nPageWidth, sal_Int32 nPageHeight, Orientation eOrientation = Inherit );
     /** Play a metafile like an outputdevice would do
     */
     struct PlayMetafileContext
@@ -870,7 +870,7 @@ The following structure describes the permissions used in PDF security
     the destination id (to be used in SetLinkDest) or
     -1 if page id does not exist
     */
-    sal_Int32           CreateNamedDest( const OUString& sDestName, const Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType = XYZ );
+    sal_Int32           CreateNamedDest( const OUString& sDestName, const Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType );
     /** Create a new destination to be used in a link
 
     @param rRect
@@ -887,7 +887,7 @@ The following structure describes the permissions used in PDF security
     the destination id (to be used in SetLinkDest) or
     -1 if page id does not exist
     */
-    sal_Int32           CreateDest( const Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType = XYZ );
+    sal_Int32           CreateDest( const Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType );
     /** Create a new link on a page
 
     @param rRect
@@ -926,7 +926,7 @@ The following structure describes the permissions used in PDF security
         @returns
             the internal destination Id.
     */
-    sal_Int32           RegisterDestReference( sal_Int32 nDestId, const Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType = XYZ );
+    sal_Int32           RegisterDestReference( sal_Int32 nDestId, const Rectangle& rRect, sal_Int32 nPageNr, DestAreaType eType );
 
 
     /** Set the destination for a link
@@ -993,7 +993,7 @@ The following structure describes the permissions used in PDF security
         @returns
         the outline item id of the new item
     */
-    sal_Int32 CreateOutlineItem( sal_Int32 nParent, const OUString& rText = OUString(), sal_Int32 nDestID = -1 );
+    sal_Int32 CreateOutlineItem( sal_Int32 nParent, const OUString& rText, sal_Int32 nDestID = -1 );
 
     /** Set an outline item's parent
 
diff --git a/include/vcl/prgsbar.hxx b/include/vcl/prgsbar.hxx
index 85b1e24d5b53..364c6ea312e7 100644
--- a/include/vcl/prgsbar.hxx
+++ b/include/vcl/prgsbar.hxx
@@ -46,9 +46,6 @@
  ************************************************************************/
 
 
-#define WB_STDPROGRESSBAR       WB_BORDER
-
-
 class VCL_DLLPUBLIC ProgressBar : public vcl::Window
 {
 private:
@@ -66,7 +63,7 @@ private:
     SAL_DLLPRIVATE void ImplDrawProgress(vcl::RenderContext& rRenderContext, sal_uInt16 nOldPerc, sal_uInt16 nNewPerc);
 
 public:
-                        ProgressBar( vcl::Window* pParent, WinBits nWinBits = WB_STDPROGRESSBAR );
+                        ProgressBar( vcl::Window* pParent, WinBits nWinBits );
 
     virtual void        Paint( vcl::RenderContext& rRenderContext, const Rectangle& rRect ) override;
     virtual void        Resize() override;
diff --git a/include/vcl/print.hxx b/include/vcl/print.hxx
index 704f3514663e..557861510dd1 100644
--- a/include/vcl/print.hxx
+++ b/include/vcl/print.hxx
@@ -683,7 +683,7 @@ public:
     */
     static css::uno::Any setRangeControlOpt( const OUString& i_rID, const OUString& i_rTitle, const OUString& i_rHelpId,
                              const OUString& i_rProperty, sal_Int32 i_nValue, sal_Int32 i_nMinValue,
-                             sal_Int32 i_nMaxValue = -2, const UIControlOptions& i_rControlOptions = UIControlOptions());
+                             sal_Int32 i_nMaxValue, const UIControlOptions& i_rControlOptions = UIControlOptions());
 
     /** Show a string field
 
diff --git a/include/vcl/scheduler.hxx b/include/vcl/scheduler.hxx
index 3abd37d6976e..ef6949de1654 100644
--- a/include/vcl/scheduler.hxx
+++ b/include/vcl/scheduler.hxx
@@ -64,7 +64,7 @@ protected:
     virtual sal_uInt64 UpdateMinPeriod( sal_uInt64 nMinPeriod, sal_uInt64 nTimeNow ) const = 0;
 
 public:
-    Scheduler( const sal_Char *pDebugName = nullptr );
+    Scheduler( const sal_Char *pDebugName );
     Scheduler( const Scheduler& rScheduler );
     virtual ~Scheduler();
 
diff --git a/include/vcl/slider.hxx b/include/vcl/slider.hxx
index 09ead4dd280e..a7e94d1a2eb7 100644
--- a/include/vcl/slider.hxx
+++ b/include/vcl/slider.hxx
@@ -79,7 +79,7 @@ private:
     SAL_DLLPRIVATE void ImplUpdateLinkedField();
 
 public:
-                    Slider( vcl::Window* pParent, WinBits nStyle = WB_HORZ );
+                    Slider( vcl::Window* pParent, WinBits nStyle);
     virtual         ~Slider() override;
     virtual void    dispose() override;
     virtual void    MouseButtonDown( const MouseEvent& rMEvt ) override;
diff --git a/include/vcl/spin.hxx b/include/vcl/spin.hxx
index d381fd1cf33d..b6168946d910 100644
--- a/include/vcl/spin.hxx
+++ b/include/vcl/spin.hxx
@@ -51,7 +51,7 @@ private:
     DECL_DLLPRIVATE_LINK_TYPED( ImplTimeout, Timer*, void );
 
 public:
-    explicit        SpinButton( vcl::Window* pParent, WinBits nStyle = 0 );
+    explicit        SpinButton( vcl::Window* pParent, WinBits nStyle );
 
     void            Up();
     void            Down();
diff --git a/include/vcl/spinfld.hxx b/include/vcl/spinfld.hxx
index 503bcb17c5ab..552c939e6cb8 100644
--- a/include/vcl/spinfld.hxx
+++ b/include/vcl/spinfld.hxx
@@ -66,7 +66,7 @@ protected:
     Rectangle *     ImplFindPartRect( const Point& rPt );
 
 public:
-    explicit        SpinField( vcl::Window* pParent, WinBits nWinStyle = 0 );
+    explicit        SpinField( vcl::Window* pParent, WinBits nWinStyle );
     explicit        SpinField( vcl::Window* pParent, const ResId& );
     virtual         ~SpinField() override;
     virtual void    dispose() override;
diff --git a/include/vcl/splitwin.hxx b/include/vcl/splitwin.hxx
index 1f246886dc69..2bacd58a8b9e 100644
--- a/include/vcl/splitwin.hxx
+++ b/include/vcl/splitwin.hxx
@@ -145,17 +145,17 @@ public:
     virtual bool        PreNotify( NotifyEvent& rNEvt ) override;
 
     void                InsertItem( sal_uInt16 nId, vcl::Window* pWindow, long nSize,
-                                    sal_uInt16 nPos, sal_uInt16 nIntoSetId = 0,
+                                    sal_uInt16 nPos, sal_uInt16 nIntoSetId,
                                     SplitWindowItemFlags nBits = SplitWindowItemFlags::NONE );
     void                InsertItem( sal_uInt16 nId, long nSize,
-                                    sal_uInt16 nPos, sal_uInt16 nIntoSetId = 0,
+                                    sal_uInt16 nPos, sal_uInt16 nIntoSetId,
                                     SplitWindowItemFlags nBits = SplitWindowItemFlags::NONE );
     void                RemoveItem( sal_uInt16 nId );
     void                Clear();
 
     void                SplitItem( sal_uInt16 nId, long nNewSize,
                                    bool bPropSmall,
-                                   bool bPropGreat = false );
+                                   bool bPropGreat );
     void                SetItemSize( sal_uInt16 nId, long nNewSize );
     long                GetItemSize( sal_uInt16 nId ) const;
     /** Set a range that limits the (variable part of the) size with an
diff --git a/include/vcl/syschild.hxx b/include/vcl/syschild.hxx
index e4142c8b72df..3f5ed9beda2a 100644
--- a/include/vcl/syschild.hxx
+++ b/include/vcl/syschild.hxx
@@ -37,7 +37,7 @@ private:
                             SystemChildWindow & operator= (const SystemChildWindow &) = delete;
 
 public:
-    explicit                SystemChildWindow( vcl::Window* pParent, WinBits nStyle = 0 );
+    explicit                SystemChildWindow( vcl::Window* pParent, WinBits nStyle );
                             // create a SystemChildWindow using the given SystemWindowData
     explicit                SystemChildWindow( vcl::Window* pParent, WinBits nStyle, SystemWindowData *pData, bool bShow = true );
     virtual                 ~SystemChildWindow() override;
diff --git a/include/vcl/tabctrl.hxx b/include/vcl/tabctrl.hxx
index ea9ea42a9cbf..fcb35d376684 100644
--- a/include/vcl/tabctrl.hxx
+++ b/include/vcl/tabctrl.hxx
@@ -72,7 +72,7 @@ protected:
     SAL_DLLPRIVATE void         ImplShowFocus();
     SAL_DLLPRIVATE void         ImplDrawItem(vcl::RenderContext& rRenderContext, ImplTabItem* pItem,
                                              const Rectangle& rCurRect, bool bFirstInGroup,
-                                             bool bLastInGroup = false, bool bIsCurrentItem = false);
+                                             bool bLastInGroup, bool bIsCurrentItem = false);
     SAL_DLLPRIVATE void         ImplFreeLayoutData();
     SAL_DLLPRIVATE bool         ImplHandleKeyEvent( const KeyEvent& rKeyEvent );
 
diff --git a/include/vcl/tabdlg.hxx b/include/vcl/tabdlg.hxx
index 0849cc83587f..32a34e3767da 100644
--- a/include/vcl/tabdlg.hxx
+++ b/include/vcl/tabdlg.hxx
@@ -39,7 +39,7 @@ private:
 
 public:
                         TabDialog( vcl::Window* pParent,
-                                   WinBits nStyle = WB_STDTABDIALOG );
+                                   WinBits nStyle );
                         TabDialog( vcl::Window* pParent, const OUString& rID, const OUString& rUIXMLDescription );
     virtual             ~TabDialog() override;
     virtual void        dispose() override;
diff --git a/include/vcl/toolbox.hxx b/include/vcl/toolbox.hxx
index ca913c8aaa6f..e8c5a9295f88 100644
--- a/include/vcl/toolbox.hxx
+++ b/include/vcl/toolbox.hxx
@@ -301,7 +301,7 @@ public:
     virtual void        InsertItem( const OUString& rCommand,
                                     const css::uno::Reference<css::frame::XFrame>& rFrame,
                                     ToolBoxItemBits nBits,
-                                    const Size& rRequestedSize = Size(),
+                                    const Size& rRequestedSize,
                                     sal_uInt16 nPos = TOOLBOX_APPEND );
     void                InsertItem( sal_uInt16 nItemId, const Image& rImage,
                                     ToolBoxItemBits nBits = ToolBoxItemBits::NONE,
diff --git a/include/vcl/vclevent.hxx b/include/vcl/vclevent.hxx
index 232162b76542..a1c9a9724bdb 100644
--- a/include/vcl/vclevent.hxx
+++ b/include/vcl/vclevent.hxx
@@ -212,7 +212,7 @@ private:
     void*   pData;
 
 public:
-    VclWindowEvent( vcl::Window* pWin, sal_uLong n, void* pDat = nullptr );
+    VclWindowEvent( vcl::Window* pWin, sal_uLong n, void* pDat );
     virtual ~VclWindowEvent() override;
 
     vcl::Window* GetWindow() const { return pWindow; }
diff --git a/include/vcl/vclmedit.hxx b/include/vcl/vclmedit.hxx
index 89d07c50f624..c6436f9c7de9 100644
--- a/include/vcl/vclmedit.hxx
+++ b/include/vcl/vclmedit.hxx
@@ -59,7 +59,7 @@ protected:
     virtual void ApplySettings(vcl::RenderContext& rRenderContext) override;
 public:
                     VclMultiLineEdit( vcl::Window* pParent,
-                                      WinBits nWinStyle = WB_LEFT | WB_BORDER );
+                                      WinBits nWinStyle );
     virtual         ~VclMultiLineEdit() override;
     virtual void    dispose() override;
 
diff --git a/include/vcl/window.hxx b/include/vcl/window.hxx
index e638c6095cd7..8c82fa9d6720 100644
--- a/include/vcl/window.hxx
+++ b/include/vcl/window.hxx
@@ -1204,7 +1204,7 @@ public:
 
     bool                                HandleScrollCommand( const CommandEvent& rCmd,
                                                              ScrollBar* pHScrl,
-                                                             ScrollBar* pVScrl = nullptr );
+                                                             ScrollBar* pVScrl );
 
     void                                SaveBackground( const Point& rPos, const Size& rSize,
                                                         const Point& rDestOff, VirtualDevice& rSaveDevice );
diff --git a/include/vcl/wmf.hxx b/include/vcl/wmf.hxx
index 7ee24479218c..bea47d225052 100644
--- a/include/vcl/wmf.hxx
+++ b/include/vcl/wmf.hxx
@@ -55,7 +55,7 @@ struct WMF_EXTERNALHEADER
     }
 };
 
-bool ConvertWMFToGDIMetaFile( SvStream & rStreamWMF, GDIMetaFile & rGDIMetaFile, FilterConfigItem* pConfigItem, WMF_EXTERNALHEADER *pExtHeader = nullptr );
+bool ConvertWMFToGDIMetaFile( SvStream & rStreamWMF, GDIMetaFile & rGDIMetaFile, FilterConfigItem* pConfigItem, WMF_EXTERNALHEADER *pExtHeader );
 
 VCL_DLLPUBLIC bool ReadWindowMetafile( SvStream& rStream, GDIMetaFile& rMTF );