[gtk/gtk-3-24: 3/4] GDK: Avoid using constructors on Win32

[Matthias Clasen <matthiasc src gnome org>]

commit d53b6b858ff939d8dd72364c25aa464d28e7b288
Author: Luca Bacci <luca bacci982 gmail com>
Date:   Thu Mar 3 14:07:48 2022 +0100

    GDK: Avoid using constructors on Win32
    
    The constructors in GDK only have a meaning for UNIX, on Windows
    they are useless.

 gdk/gdk.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/gdk/gdk.c b/gdk/gdk.c
index f0869a6a81..83672d8f87 100644
--- a/gdk/gdk.c
+++ b/gdk/gdk.c
@@ -1132,7 +1132,8 @@ gdk_unichar_direction (gunichar ch)
     return PANGO_DIRECTION_LTR;
 }
 
-#ifdef G_HAS_CONSTRUCTORS
+#if defined (G_HAS_CONSTRUCTORS) && !defined (G_OS_WIN32)
+#define GDK_USE_CONSTRUCTORS
 #ifdef G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA
 #pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(stash_startup_id)
 #pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(stash_autostart_id)
@@ -1175,7 +1176,7 @@ gdk_get_desktop_startup_id (void)
 
   if (g_once_init_enter (&init))
     {
-#ifndef G_HAS_CONSTRUCTORS
+#ifndef GDK_USE_CONSTRUCTORS
       stash_startup_id ();
 #endif
       /* Clear the environment variable so it won't be inherited by
@@ -1196,7 +1197,7 @@ gdk_get_desktop_autostart_id (void)
 
   if (g_once_init_enter (&init))
     {
-#ifndef G_HAS_CONSTRUCTORS
+#ifndef GDK_USE_CONSTRUCTORS
       stash_autostart_id ();
 #endif
       /* Clear the environment variable so it won't be inherited by