Fixes to make it compile on Windows

canvas/inc/canvas/canvastools.hxx

@@ -475,6 +475,9 @@ namespace canvas
             typedef ::std::numeric_limits< Source > SourceLimits;
             typedef ::std::numeric_limits< Target > TargetLimits;
 
+#undef min
+#undef max
+
             if( ( arg<0 && !TargetLimits::is_signed) ||                     // loosing the sign here
                 ( SourceLimits::is_signed && arg<TargetLimits::min()) ||    // underflow will happen
                 ( arg>TargetLimits::max() ) )                               // overflow will happen

canvas/source/cairo/cairo_win32_cairo.hxx

@@ -30,6 +30,8 @@
 #define _CAIROCANVAS_WIN32_CAIRO_HXX
 
 #include "cairo_cairo.hxx"
+#include <prewin.h>
+#include <postwin.h>
 
 namespace cairo {
 

vcl/inc/vcl/keycodes.hxx

@@ -30,6 +30,7 @@
 #define _SV_KEYCODES_HXX
 
 #include <vcl/sv.h>
+#undef DELETE
 #include <com/sun/star/awt/Key.hpp>
 #include <com/sun/star/awt/KeyGroup.hpp>