fixed #658 remove InternalCanvas and add AxleCanvas

src/Shared/HandyControl_Shared/Themes/Basic/Sizes.xaml

@@ -1,10 +1,11 @@
 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-                    xmlns:system="clr-namespace:System;assembly=mscorlib">
+                    xmlns:sys="clr-namespace:System;assembly=mscorlib">
 
-    <system:Double x:Key="DefaultControlHeight">30</system:Double>
+    <sys:Double x:Key="DefaultControlHeight">30</sys:Double>
     <Thickness x:Key="DefaultControlPadding">10,6</Thickness>
     <Thickness x:Key="DefaultInputPadding">8,6</Thickness>
     <CornerRadius x:Key="DefaultCornerRadius">4</CornerRadius>
+    <sys:Double x:Key="{x:Static SystemParameters.VerticalScrollBarButtonHeightKey}">30</sys:Double>
 
-</ResourceDictionary>
+</ResourceDictionary>