I installed this(Gtk2::Ex::Graph::GD) module.

How? Where from?

When I build Gtk2 I have to

set GTK_BASEPATH=...\gtk-bundle
set PATH=%GTK_BASEPATH%\bin;%PATH%
set PKG_CONFIG_PATH=%GTK_BASEPATH%\lib\pkgconfig
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Because

$ objdump -p blib\arch\auto\Gtk2\Gtk2.dll |grep DLL.Name
        DLL Name: KERNEL32.dll
        DLL Name: msvcrt.dll
        DLL Name: perl510.dll
        DLL Name: Cairo.dll
        DLL Name: Glib.dll
        DLL Name: Pango.dll
        DLL Name: libatk-1.0-0.dll
        DLL Name: libcairo-2.dll
        DLL Name: libgdk-win32-2.0-0.dll
        DLL Name: libgdk_pixbuf-2.0-0.dll
        DLL Name: libglib-2.0-0.dll
        DLL Name: libgobject-2.0-0.dll
        DLL Name: libgtk-win32-2.0-0.dll
        DLL Name: libpango-1.0-0.dll
        DLL Name: libpangocairo-1.0-0.dll
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If you installed Gtk2 , it should have come with libglib-2.0-0.dll... and they should be in your PATH