[gtk+] Fix broken function pointer declarations on windows

[Michael Natterer <mitch src gnome org>]

commit 149de7162493055b24f2b5643ec11d45b76a4826
Author: Alan McGovern <alan xamarin com>
Date:   Fri Nov 23 15:38:34 2012 -0500

    Fix broken function pointer declarations on windows
    
    Both flashing a window and setting the window opacity were using
    incorrect declarations for function pointers. They were missing the
    WINAPI annotation as defined in windows.h. As a result, the stack
    could be corrupted when these functions were invoked.
    
    Fixes https://bugzilla.gnome.org/show_bug.cgi?id=689235
    (cherry picked from commit 5637ef1f97ee46666c97707ed7f6bae459007163)

 gdk/win32/gdkwindow-win32.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gdk/win32/gdkwindow-win32.c b/gdk/win32/gdkwindow-win32.c
index 92b8839..5d1b153 100644
--- a/gdk/win32/gdkwindow-win32.c
+++ b/gdk/win32/gdkwindow-win32.c
@@ -27,6 +27,7 @@
 
 #include "config.h"
 #include <stdlib.h>
+#include <windows.h>
 
 #include "gdk.h"
 #include "gdkwindowimpl.h"
@@ -1533,7 +1534,7 @@ gdk_win32_window_set_urgency_hint (GdkWindow *window,
 			     gboolean   urgent)
 {
   FLASHWINFO flashwinfo;
-  typedef BOOL (*PFN_FlashWindowEx) (FLASHWINFO*);
+  typedef BOOL (WINAPI *PFN_FlashWindowEx) (FLASHWINFO*);
   PFN_FlashWindowEx flashWindowEx = NULL;
 
   g_return_if_fail (GDK_IS_WINDOW (window));
@@ -3264,7 +3265,7 @@ gdk_win32_window_set_opacity (GdkWindow *window,
 			gdouble    opacity)
 {
   LONG exstyle;
-  typedef BOOL (*PFN_SetLayeredWindowAttributes) (HWND, COLORREF, BYTE, DWORD);
+  typedef BOOL (WINAPI *PFN_SetLayeredWindowAttributes) (HWND, COLORREF, BYTE, DWORD);
   PFN_SetLayeredWindowAttributes setLayeredWindowAttributes = NULL;
 
   g_return_if_fail (GDK_IS_WINDOW (window));