move checking for x11 to runtime

src/main.c

@@ -48,6 +48,8 @@ static GtkWidget *text = NULL;
 
 static gint ret = YAD_RESPONSE_ESC;
 
+static gboolean is_x11 = FALSE;
+
 YadNTabs *tabs;
 
 #ifndef G_OS_WIN32
@@ -556,9 +558,8 @@ create_dialog (void)
         gtk_window_fullscreen (GTK_WINDOW (dlg));
     }
 
-#ifdef GDK_WINDOWING_X11
   /* print xid */
-  if (options.print_xid)
+  if (is_x11 && options.print_xid)
     {
       FILE *xf;
 
@@ -577,7 +578,6 @@ create_dialog (void)
             fflush (xf);
         }
     }
-#endif
 
   return dlg;
 }
@@ -725,6 +725,12 @@ main (gint argc, gchar ** argv)
     }
   yad_set_mode ();
 
+  /* check for current GDK backend */
+#ifdef GDK_WINDOWING_X11
+  if (GDK_IS_X11_DISPLAY (gdk_display_get_default ()))
+    is_x11 = TRUE;
+#endif
+
   /* parse custom gtkrc */
   if (options.gtkrc_file)
     {
@@ -792,14 +798,12 @@ main (gint argc, gchar ** argv)
   signal (SIGUSR2, sa_usr2);
 #endif
 
-#ifndef GDK_WINDOWING_X11
-  if (options.plug != -1)
+  if (!is_x11 && options.plug != -1)
     {
       options.plug = -1;
       if (options.debug)
         g_printerr ("YAD: WARNING: --plug mode not supported outside X11");
     }
-#endif
 
   /* plug mode */
   if (options.plug != -1)
@@ -810,7 +814,8 @@ main (gint argc, gchar ** argv)
       return ret;
     }
 
-#ifndef GDK_WINDOWING_X11
+  if (!is_x11)
+    {
       if (options.mode == YAD_MODE_NOTEBOOK || options.mode == YAD_MODE_PANED
 #ifdef HAVE_TRAY
           || options.mode == YAD_MODE_NOTIFICATION
@@ -820,7 +825,7 @@ main (gint argc, gchar ** argv)
           g_printerr ("This mode not supported outside X11");
           return 1;
         }
-#endif
+    }
 
   switch (options.mode)
     {
@@ -857,11 +862,12 @@ main (gint argc, gchar ** argv)
     default:
       dialog = create_dialog ();
 
-#ifdef GDK_WINDOWING_X11
+      if (is_x11)
+        {
           /* add YAD_XID variable */
           str = g_strdup_printf ("0x%X", (guint) GDK_WINDOW_XID (gtk_widget_get_window (dialog)));
           g_setenv ("YAD_XID", str, TRUE);
-#endif
+        }
 
       /* make some specific init actions */
       if (options.mode == YAD_MODE_NOTEBOOK)