File gtk+-2.18.9-mingww64.patch of Package mingw32-gtk2
--- gtk/gtkprintoperation-win32.c 2009-08-15 11:44:53.000000000 +0200
+++ gtk/gtkprintoperation-win32.c 2009-08-15 11:46:46.000000000 +0200
@@ -72,7 +72,7 @@
static const GUID myIID_IPrintDialogCallback = {0x5852a2c3,0x6530,0x11d1,{0xb6,0xa3,0x0,0x0,0xf8,0x75,0x7b,0xf9}};
-#if !defined (_MSC_VER) && !defined (MINGW64) && !defined (__MINGW64__)
+#if !defined (_MSC_VER) && !defined (__MINGW64_VERSION_MAJOR)
#undef INTERFACE
#define INTERFACE IPrintDialogCallback
DECLARE_INTERFACE_ (IPrintDialogCallback, IUnknown)