gdkscreen-win32.c: Also define _WIN32_WINNT

As in the last commit on gdkdisplay-win32.c, we need to define that to be
0x0600 (Vista) or later so that the items needed in the Windows headers be
activated.

See: https://bugzilla.gnome.org/show_bug.cgi?id=768081#c62

diff --git a/gdk/win32/gdkscreen-win32.c b/gdk/win32/gdkscreen-win32.c
index 47f0168a1a84ddcb00bfb1776b507098c25ee551..63a6cf7b1297b3eef50a22975b33a1bbf01eec9b 100644 (file)
--- a/gdk/win32/gdkscreen-win32.c
+++ b/gdk/win32/gdkscreen-win32.c
@@ -16,6 +16,9 @@
  */
 
 #include "config.h"
+
+#define _WIN32_WINNT 0x0600
+
 #include "gdk.h"
 #include "gdkprivate-win32.h"
 #include "gdkscreenprivate.h"