convert Link<> to typed

Change-Id: I4fba6bf5b34b086a11659de3cddf46c76007a147

include/svx/svdhdl.hxx

@@ -258,7 +258,7 @@ private:
     Color                       aMarkerColor;
 
     // callback link when value changed
-    Link<>                      aColorChangeHdl;
+    Link<SdrHdlColor*,void>     aColorChangeHdl;
 
     // use luminance values only
     bool                        bUseLuminance : 1;
@@ -282,7 +282,7 @@ public:
 
     void SetSize(const Size& rNew);
 
-    void SetColorChangeHdl(const Link<>& rLink) { aColorChangeHdl = rLink; }
+    void SetColorChangeHdl(const Link<SdrHdlColor*,void>& rLink) { aColorChangeHdl = rLink; }
 };
 
 
@@ -322,7 +322,7 @@ public:
     void Set2ndPos(const Point& rPnt);
 
     // the link called by the color handles
-    DECL_LINK(ColorChangeHdl, SdrHdl*);
+    DECL_LINK_TYPED(ColorChangeHdl, SdrHdlColor*, void);
 
     // transformation call, create gradient from this handle
     void FromIAOToItem(SdrObject* pObj, bool bSetItemOnObject, bool bUndo);

svx/source/svdraw/svdhdl.cxx

@@ -1230,11 +1230,10 @@ void SdrHdlGradient::CreateB2dIAObject()
     }
 }
 
-IMPL_LINK(SdrHdlGradient, ColorChangeHdl, SdrHdl*, /*pHdl*/)
+IMPL_LINK_NOARG_TYPED(SdrHdlGradient, ColorChangeHdl, SdrHdlColor*, void)
 {
     if(GetObj())
         FromIAOToItem(GetObj(), true, true);
-    return 0;
 }
 
 void SdrHdlGradient::FromIAOToItem(SdrObject* _pObj, bool bSetItemOnObject, bool bUndo)