handle negative values similar to gtk_widget_set_uposition(). that is:

Thu Jul 16 01:27:15 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtkwidget.h:
        * gtk/gtkwidget.c (gtk_widget_set_usize): handle negative values
        similar to gtk_widget_set_uposition(). that is: -1=unspecified,
        -2=leave untouched. changed the width/height field of GtkWidgetAuxInfo
        to be gint16s rather than guint16s, since that's what the code expected
        (for a long time actually).

        * gtk/gtkviewport.c:
        added support for object arguments: GtkViewport::shadow_type,
        GtkViewport::vadjustment and GtkViewport::hadjustment.
        (gtk_viewport_add): chain gtk_bin_add.

        * gtk/gtkscrolledwindow.c:
        added support for object argument: GtkScrolledWindow::hscrollbar_policy,
        GtkScrolledWindow::vscrollbar_policy and GtkScrolledWindow::viewport.

        * gtk/gtkadjustment.h:
        * gtk/gtkadjustment.c:
        * gtk/gtkctree.h:
        * gtk/gtkclist.h:
        * gtk/gtkctree.c:
        * gtk/gtkclist.c:
        * gtk/gtkscrolledwindow.h:
        * gtk/gtkscrolledwindow.c:
        * gtk/gtkviewport.h:
        * gtk/gtkviewport.c:
        GtkType and macro fixups.

1 files changed, 5 insertions, 2 deletions

diff --git a/gtk/gtkobject.c b/gtk/gtkobject.c
index dd7742939b..23842dee8b 100644
--- a/gtk/gtkobject.c
+++ b/gtk/gtkobject.c
@@ -855,9 +855,12 @@ gtk_object_add_arg_type (const char *arg_name,
   g_return_if_fail (arg_name != NULL);
   g_return_if_fail (arg_type > GTK_TYPE_NONE);
   g_return_if_fail (arg_id > 0);
-  g_return_if_fail ((arg_flags & GTK_ARG_READWRITE) != 0);
   g_return_if_fail ((arg_flags & GTK_ARG_CHILD_ARG) == 0);
-
+  if (arg_flags & GTK_ARG_CONSTRUCT)
+    g_return_if_fail ((arg_flags & GTK_ARG_READWRITE) == GTK_ARG_READWRITE);
+  else
+    g_return_if_fail ((arg_flags & GTK_ARG_READWRITE) != 0);
+    
   if (!object_arg_info_ht)
     object_arg_info_ht = g_hash_table_new (gtk_arg_info_hash,
 					   gtk_arg_info_equal);