[gtk+] win32: Make gdk_win32_display_get_root_window available

[Matthias Clasen <matthiasc src gnome org>]

commit be759844851409606cdef22f5f078cc98c10cc12
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Nov 5 20:45:49 2017 -0500

    win32: Make gdk_win32_display_get_root_window available
    
    This will be used to replace the equivalent frontend api,
    which is going away.

 gdk/win32/gdkdisplay-win32.c |    2 +-
 gdk/win32/gdkprivate-win32.h |    1 +
 2 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gdk/win32/gdkdisplay-win32.c b/gdk/win32/gdkdisplay-win32.c
index 9f13f18..5a34e7d 100644
--- a/gdk/win32/gdkdisplay-win32.c
+++ b/gdk/win32/gdkdisplay-win32.c
@@ -1225,7 +1225,7 @@ gdk_win32_display_get_setting (GdkDisplay  *display,
                                         value);
 }
 
-static GdkWindow *
+GdkWindow *
 gdk_win32_display_get_root_window (GdkDisplay *display)
 {
   return gdk_win32_screen_get_root_window (GDK_WIN32_DISPLAY (display)->screen);
diff --git a/gdk/win32/gdkprivate-win32.h b/gdk/win32/gdkprivate-win32.h
index 57b8142..47e5759 100644
--- a/gdk/win32/gdkprivate-win32.h
+++ b/gdk/win32/gdkprivate-win32.h
@@ -496,6 +496,7 @@ void _gdk_win32_window_delete_property (GdkWindow *window, GdkAtom    property);
 gboolean _gdk_win32_screen_get_setting (GdkScreen   *screen, const gchar *name, GValue *value);
 void _gdk_win32_screen_on_displaychange_event (GdkWin32Screen *screen);
 GdkWindow *gdk_win32_screen_get_root_window (GdkScreen *screen);
+GdkWindow *gdk_win32_display_get_root_window (GdkDisplay *display);
 
 /* Distributed display manager implementation */
 GdkDisplay *_gdk_win32_display_open (const gchar *display_name);