Compile error for emf-win32-inout.cpp under Windows

I got a compiling error while building inkscape-0.48pre0 under Windows XP SP3, using gcc (tdm-1) 4.5.0.

I did every single step as in http://wiki.inkscape.org/wiki/index.php/Win32Port, but the problem didn't went away.

It seems that the problem is in file "emf-win32-inout.cpp." Apparently, the compiler expects an argument of type "ENHMETARECORD*", while it received a type of "const ENHMETARECORD*".

I couldn't dig this error much, since it's my first time compiling Inkscape.

Here's a log of the error:

============================================================

C:\src\inkscape>btool.exe
####################################################
# BuildTool v0.9.9
####################################################
######## PARSE : build.xml
============ cmd ============
bzr revno
=============================
######## PARSE COMPLETE
######## EXECUTE
##### Target : init
##### Do all preparatory tasks, like make directories and copy files
--- init / mkdir
    mkdir : build
--- init / mkdir
    mkdir : build/java
--- init / mkdir
    mkdir : build/java/classes
--- init / mkdir
    mkdir : build/java/lib
--- init / mkdir
    mkdir : inkscape
--- init / copy
    copy : src/helper/sp-marshal.h.mingw to src/helper/sp-marshal.h
    copy : skipped
--- init / copy
    copy : src/helper/sp-marshal.cpp.mingw to src/helper/sp-marshal.cpp
    copy : skipped
--- init / makefile
============ cmd ============
bzr revno
=============================
    makefile : src/inkscape-version.cpp
    makefile : skipped
--- init / makefile
    makefile : config.h
    makefile : skipped
##### Target : cxxtest
##### generate test files
--- cxxtest / cxxtestpart
--- cxxtest / cxxtestpart
--- cxxtest / cxxtestpart
--- cxxtest / cxxtestpart
--- cxxtest / cxxtestpart
--- cxxtest / cxxtestpart
--- cxxtest / cxxtestpart
--- cxxtest / cxxtestroot
##### Target : compile
##### compile the source to .o
--- compile / cc
    cc : compile of build/obj/extension/internal/emf-win32-inout.o required by s
ource: src/extension/internal/emf-win32-inout.cpp
============ cmd ============
mingw32-g++ -c -Wall -Wformat -Werror=format-security -W -Wpointer-arith -Wcast-align -Wsign-compare -Woverloaded-virtual -Wswitch -O2 -mms-bitfields -fopenmp -DVERSION=\"0.47+devel\" -DHAVE_CONFIG_H -D_INTL_REDIRECT_INLINE -DHAVE_SSL -DRELAYTOOL_SSL="static const int libssl_is_present=1; static int __attribute__((unused)) libssl_symbol_is_present(char *s){ return 1; }" -DPOPPLER_NEW_GFXFONT -I. -Ic:\devlibs/include -Ic:\devlibs/include/gtkmm-2.4 -Ic:\devlibs/lib/gtkmm-2.4/include -Ic:\devlibs/include/glibmm-2.4 -Ic:\devlibs/lib/glibmm-2.4/include -Ic:\devlibs/include/glib-2.0 -Ic:\devlibs/lib/glib-2.0/include -mms-bitfields -Ic:\devlibs/include/sigc++-2.0 -Ic:\devlibs/lib/sigc++-2.0/include -Ic:\devlibs/include/giomm-2.4 -Ic:\devlibs/lib/giomm-2.4/include -Ic:\devlibs/include/gdkmm-2.4-Ic:\devlibs/lib/gdkmm-2.4/include -Ic:\devlibs/include/pangomm-1.4 -Ic:\devlibs/lib/pangomm-1.4/include -Ic:\devlibs/include/gtk-2.0 -Ic:\devlibs/lib/gtk-2.0/include -Ic:\devlibs/include/gtk-2.0 -Ic:\devlibs/include/pango-1.0 -Ic:\devlibs/include/pango-1.0 -Ic:\devlibs/include/pango-1.0 -Ic:\devlibs/include/cairo -Ic:\devlibs/include/cairomm-1.0 -Ic:\devlibs/lib/cairomm-1.0/include -Ic:\devlibs/include/atkmm-1.6 -Ic:\devlibs/include/atk-1.0 -Ic:\devlibs/include/gtk-2.0 -mms-bitfields -Ic:\devlibs/include/gtk-2.0 -Ic:\devlibs/lib/gtk-2.0/include -Ic:\devlibs/include/ImageMagick -Ic:\devlibs/include/ImageMagick -fopenmp -D_MAGICKDLL_ -Ic:\devlibs/include/libxml2 -Ic:\devlibs/include/freetype2 -Ic:\devlibs/include -Ic:\devlibs/include/cairo -Ic:\devlibs/include/poppler -Ic:\devlibs/include/gc -Ic:\devlibs/include/libwpg-0.1 -Ic:\devlibs/include/libwpd-0.8 -Ic:\devlibs/include/libwpg-0.1 -Ic:\devlibs/include/libwpd-0.8 -Icxxtest -Ic:\devlibs/python/include -Isrc/bind/javainc -Isrc/bind/javainc/win32 -Isrc -Isrc/2geom -Isrc/2geom/numeric -Isrc/application -Isrc/bind -Isrc/debug -Isrc/dialogs -Isrc/display -Isrc/dom -Isrc/dom/io -Isrc/dom/odf -Isrc/dom/util -Isrc/extension -Isrc/extension/implementation -Isrc/extension/internal -Isrc/extension/internal/bitmap -Isrc/extension/internal/filter -Isrc/extension/internal/pdfinput -Isrc/extension/script -Isrc/filters -Isrc/helper -Isrc/io -Isrc/jabber_whiteboard -Isrc/jabber_whiteboard/dialog -Isrc/libavoid -Isrc/libcola -Isrc/libcroco -Isrc/libgdl -Isrc/libnr -Isrc/libnrtype -Isrc/libvpsc -Isrc/libvpsc/pairingheap -Isrc/livarot -Isrc/live_effects -Isrc/live_effects/parameter -Isrc/pedro -Isrc/svg -Isrc/trace -Isrc/trace/potrace -Isrc/ui -Isrc/ui/cache -Isrc/ui/dialog -Isrc/ui/tool -Isrc/ui/view -Isrc/ui/widget -Isrc/util -Isrc/widgets -Isrc/xml src/extension/internal/emf-win32-inout.cpp -o build/obj/extension/internal/emf-win32-inout.o
=============================
Make error line 299: problem compiling: In file included from src/2geom/d2.h:36:
0,
                 from src/2geom/rect.h:40,
                 from src/libnr/nr-rect.h:28,
                 from src/sp-item.h:25,
                 from src/sp-lpe-item.h:17,
                 from src/sp-shape.h:18,
                 from src/sp-path.h:16,
                 from src/extension/internal/emf-win32-inout.cpp:29:
src/2geom/interval.h: In member function 'bool Geom::OptInterval::isEmpty()':
src/2geom/interval.h:241:46: warning: converting 'false' to pointer type for argument 2 of 'bool boost::operator==(const boost::optional<T>&, void (*)(boost::detail::none_helper)) [with T = Geom::Interval, void (*)(boost::detail::none_helper) = void (*)(boost::detail::none_helper)]'
In file included from src/2geom/d2.h:429:0,
                 from src/2geom/rect.h:40,
                 from src/libnr/nr-rect.h:28,
                 from src/sp-item.h:25,
                 from src/sp-lpe-item.h:17,
                 from src/sp-shape.h:18,
                 from src/sp-path.h:16,
                 from src/extension/internal/emf-win32-inout.cpp:29:
src/2geom/rect.h: In member function 'bool Geom::OptRect::isEmpty() const':
src/2geom/rect.h:218:52: warning: converting 'false' to pointer type for argument 2 of 'bool boost::operator==(const boost::optional<T>&, void (*)(boost::detail::none_helper)) [with T = Geom::D2<Geom::Interval>, void (*)(boost::detail::none_helper) = void (*)(boost::detail::none_helper)]'
src/extension/internal/emf-win32-inout.cpp: In member function 'virtual SPDocument* Inkscape::Extension::Internal::EmfWin32::open(Inkscape::Extension::Input*, const gchar*)':
src/extension/internal/emf-win32-inout.cpp:2356:73: error: invalid conversion from 'int (*)(HDC__*, HANDLETABLE*, ENHMETARECORD*, int, LPARAM)' to 'int (*)(HDC__*, HANDLETABLE*, const ENHMETARECORD*, int, LPARAM)'
src/extension/internal/emf-win32-inout.cpp:2356:73: error: initializing argument 3 of 'BOOL EnumEnhMetaFile(HDC__*, HENHMETAFILE__*, int (*)(HDC__*, HANDLETABLE*, const ENHMETARECORD*, int, LPARAM), void*, const RECT*)'

C:\src\inkscape>
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