diff --git a/ChangeLog b/ChangeLog
index c966ae9ef..9cd354cef 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2005-03-03  Mike Kestner  <mkestner@novell.com>
+
+	* gdk/Gdk.metadata : remove unnecessary null_ok rules.
+	* generator/Ctor.cs : remove NullOk check.
+	* gnome/Gnome.metadata : remove unnecessary null_ok rules.
+	* gtk/Gtk.metadata : remove unnecessary null_ok rules.
+
 2005-03-03  Mike Kestner  <mkestner@novell.com>
 
 	* generator/ClassBase.cs : use "as" instead of a cast in FromNative.
diff --git a/gdk/Gdk.metadata b/gdk/Gdk.metadata
index 821e44260..3cc6fa9d6 100644
--- a/gdk/Gdk.metadata
+++ b/gdk/Gdk.metadata
@@ -25,7 +25,6 @@
   <attr path="/api/namespace/class[@cname='GdkGlobal']/method[@name='StringToCompoundTextForDisplay']" name="hidden">1</attr>
   <attr path="/api/namespace/class[@cname='GdkPango_']" name="name">PangoHelper</attr>
   <attr path="/api/namespace/class[@cname='GdkPixbuf_']" name="hidden">1</attr>
-  <attr path="/api/namespace/class[@cname='GdkPointer_']/method[@name='Grab']/*/*[@name='confine_to']" name="null_ok">1</attr>
   <attr path="/api/namespace/class[@cname='GdkPointer_']/method[@name='Grab']/*/*[@name='cursor']" name="null_ok">1</attr>
   <attr path="/api/namespace/class[@cname='GdkProperty_']/method[@name='Get']/*/*[@name='actual_property_type']" name="pass_as">out</attr>
   <attr path="/api/namespace/class[@cname='GdkProperty_']/method[@name='Get']/*/*[@name='data']" name="pass_as">out</attr>
@@ -59,7 +58,6 @@
   <attr path="/api/namespace/object[@cname='GdkDrawable']/method[@name='DrawRgb32Image']/*/*[@name='buf']" name="array">1</attr>
   <attr path="/api/namespace/object[@cname='GdkDrawable']/method[@name='DrawRgb32ImageDithalign']/*/*[@name='buf']" name="array">1</attr>
   <attr path="/api/namespace/object[@cname='GdkDrawable']/method[@name='DrawLines']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GdkDrawable']/method[@name='DrawPixbuf']/*/*[@name='gc']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GdkDrawable']/method[@name='DrawPolygon']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GdkDrawable']/method[@name='GetSize']/*/*[@type='gint*']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GdkKeymap']/method[@name='GetEntriesForKeycode']" name="hidden">1</attr>
@@ -94,7 +92,6 @@
   <attr path="/api/namespace/object[@cname='GdkPixbufLoader']/method[@name='GetPixbuf']" name="needs_ref">1</attr>
   <attr path="/api/namespace/object[@cname='GdkPixbufLoader']/method[@name='Write']/*/*[@name='buf']" name="array">1</attr>
   <attr path="/api/namespace/object[@cname='GdkPixmap']" name="parent">GdkDrawable</attr>
-  <attr path="/api/namespace/object[@cname='GdkPixmap']/constructor[@cname='gdk_pixmap_new']/*/*[@type='GdkDrawable*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GdkPixmap']/method[@name='CreateFromXpm']/*/*[@name='mask']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GdkPixmap']/method[@name='CreateFromXpmD']/*/*[@name='mask']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GdkPixmap']/method[@name='CreateFromXpmD']/*/*[@name='data']" name="array">1</attr>
@@ -123,7 +120,6 @@
   <attr path="/api/namespace/object[@cname='GdkWindow']/method[@name='SetIconList']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GdkWindow']/method[@name='GetUserData']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GdkWindow']/method[@cname='gdk_window_set_user_data']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GdkWindow']/method[@cname='gdk_window_set_back_pixmap']/*/*[@name='pixmap']" name="null_ok">1</attr>
   <attr path="/api/namespace/struct[@cname='GdkAtom']/method[@name='Name']" name="name">GetName</attr>
   <attr path="/api/namespace/struct[@cname='GdkEventAny']" name="hidden">1</attr>
   <attr path="/api/namespace/struct[@cname='GdkEventButton']" name="hidden">1</attr>
diff --git a/generator/Ctor.cs b/generator/Ctor.cs
index fecc769d8..8e234e23e 100644
--- a/generator/Ctor.cs
+++ b/generator/Ctor.cs
@@ -124,7 +124,7 @@ namespace GtkSharp.Generation {
 							for (int i = 0; i < names.Count; i++) {
 								Parameter p = Parameters [i];
 								string indent = "\t\t\t\t";
-								if (p.NullOk && p.Generatable is ObjectGen) {
+								if (p.Generatable is ObjectGen) {
 									sw.WriteLine (indent + "if (" + p.Name + " != null) {");
 									indent += "\t";
 								}
@@ -136,7 +136,7 @@ namespace GtkSharp.Generation {
 								else
 									sw.WriteLine ("new GLib.Value (" + values[i] + "));");
 
-								if (p.NullOk && p.Generatable is ObjectGen)
+								if (p.Generatable is ObjectGen)
 									sw.WriteLine ("\t\t\t\t}");
 							}
 
diff --git a/gnome/Gnome.metadata b/gnome/Gnome.metadata
index 9d42e97dd..f88ad2a33 100644
--- a/gnome/Gnome.metadata
+++ b/gnome/Gnome.metadata
@@ -24,7 +24,6 @@
   <attr path="/api/namespace/object[@cname='GnomeAbout']" name="disable_void_ctor">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeAbout']/constructor[@cname='gnome_about_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeAbout']/method[@name='Construct']/*/*[@type='const-gchar**']" name="array">1</attr>
-  <attr path="/api/namespace/object[@cname='GnomeAbout']/method[@name='Construct']/*/*[@name='logo_pixbuf']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeAppBar']/signal[@name='ClearPrompt']" name="name">PromptCleared</attr>
   <attr path="/api/namespace/object[@cname='GnomeCanvas']/method[@name='C2w']/*/*[@type='double*']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GnomeCanvas']/method[@name='GetButtPoints']/*/*[@type='double*']" name="pass_as">out</attr>
@@ -60,17 +59,11 @@
   <attr path="/api/namespace/object[@cname='GnomeDialog']/method[@name='SetDefault']" name="new_flag">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruid']/constructor[@cname='gnome_druid_new_with_window']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruid']/method[@cname='gnome_druid_construct_with_window']/*/*[@name='window']" name="pass_as">out</attr>
-  <attr path="/api/namespace/object[@cname='GnomeDruid']/method[@cname='gnome_druid_construct_with_window']/*/*[@name='parent']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruidPage']/signal[@name='Back']" name="name">BackClicked</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruidPage']/signal[@name='Cancel']" name="name">CancelClicked</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruidPage']/signal[@name='Finish']" name="name">FinishClicked</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruidPage']/signal[@name='Next']" name="name">NextClicked</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruidPage']/signal[@name='Prepare']" name="name">Prepared</attr>
-  <attr path="/api/namespace/object[@cname='GnomeDruidPageStandard']/constructor[@cname='gnome_druid_page_standard_new_with_vals']/*/*[@name='logo']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GnomeDruidPageStandard']/constructor[@cname='gnome_druid_page_standard_new_with_vals']/*/*[@name='top_watermark']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GnomeDruidPageEdge']/method[@cname='gnome_druid_page_edge_construct']/*/*[@name='logo']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GnomeDruidPageEdge']/method[@cname='gnome_druid_page_edge_construct']/*/*[@name='watermark']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GnomeDruidPageEdge']/method[@cname='gnome_druid_page_edge_construct']/*/*[@name='top_watermark']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruidPageEdge']/constructor[@cname='gnome_druid_page_edge_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruidPageEdge']/constructor[@cname='gnome_druid_page_edge_new_with_vals']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeDruidPageEdge']/constructor[@cname='gnome_druid_page_edge_new_aa']" name="hidden">1</attr>
@@ -92,13 +85,9 @@
   <attr path="/api/namespace/object[@cname='GnomeFontFamily']/method[@name='ListFree']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeFontFamily']/method[@name='StyleList']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeFontFamily']/method[@name='StyleListFree']" name="hidden">1</attr>
-  <attr path="/api/namespace/class[@cname='GnomeIcon_']/method[@name='LookupSync']/*/*[@name='thumbnail_factory']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeIconEntry']/method[@name='PickDialog']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GnomeIconList']/method[@cname='gnome_icon_list_construct']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeIconList']/constructor[@cname='gnome_icon_list_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeIconList']/method[@name='GetSelection']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GnomeIconList']/method[@name='SetHadjustment']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GnomeIconList']/method[@name='SetVadjustment']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GnomeIconList']/signal[@name='FocusIcon']" name="name">IconFocused</attr>
   <attr path="/api/namespace/object[@cname='GnomeIconList']/signal[@name='SelectIcon']" name="name">IconSelected</attr>
   <attr path="/api/namespace/object[@cname='GnomeIconList']/signal[@name='UnselectIcon']" name="name">IconUnselected</attr>
diff --git a/gtk/Gtk.metadata b/gtk/Gtk.metadata
index 24093a798..f1a02cfaf 100644
--- a/gtk/Gtk.metadata
+++ b/gtk/Gtk.metadata
@@ -17,9 +17,7 @@
   <attr path="/api/namespace/boxed[@cname='GtkSelectionData']/method[@name='Set']/*/*[@name='data']" name="type">guchar</attr>
   <attr path="/api/namespace/boxed[@cname='GtkSelectionData']/method[@name='Set']/*/*[@name='data']" name="array">1</attr>
   <attr path="/api/namespace/boxed[@cname='GtkTextIter']/method[@name='BackwardSearch']/*/*[@type='GtkTextIter*']" name="pass_as">out</attr>
-  <attr path="/api/namespace/boxed[@cname='GtkTextIter']/method[@name='BackwardToTagToggle']/*/*[@type='GtkTextTag*']" name="null_ok">1</attr>
   <attr path="/api/namespace/boxed[@cname='GtkTextIter']/method[@name='ForwardSearch']/*/*[@type='GtkTextIter*']" name="pass_as">out</attr>
-  <attr path="/api/namespace/boxed[@cname='GtkTextIter']/method[@name='ForwardToTagToggle']/*/*[@type='GtkTextTag*']" name="null_ok">1</attr>
   <attr path="/api/namespace/boxed[@cname='GtkTextIter']/method[@name='GetChar']" name="hidden">1</attr>
   <attr path="/api/namespace/boxed[@cname='GtkTextIter']/method[@name='GetMarks']" name="hidden">1</attr>
   <attr path="/api/namespace/boxed[@cname='GtkTextIter']/method[@name='GetTags']" name="hidden">1</attr>
@@ -196,12 +194,9 @@
   <attr path="/api/namespace/object[@cname='GtkFrame']/method[@name='GetLabelAlign']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkFrame']/method[@name='SetLabelAlign']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkHandleBox']/property[@name='ShadowType']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkHScale']/constructor[@cname='gtk_hscale_new']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkHScale']/constructor[@cname='gtk_hscale_new_with_range']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkHScrollbar']/constructor[@cname='gtk_hscrollbar_new']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkIconTheme']/method[@name='GetSearchPath']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkIconTheme']/method[@name='ListIcons']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkImageMenuItem']/constructor[@cname='gtk_image_menu_item_new_from_stock']/*/*[@name='accel_group']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkImageMenuItem']/constructor[@cname='gtk_image_menu_item_new_with_mnemonic']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkImageMenuItem']/constructor[@cname='gtk_image_menu_item_new_with_label']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkImage']/constructor[@cname='gtk_image_new_from_animation']/*/*[@name='animation']" name="property_name">pixbuf_animation</attr>
@@ -214,7 +209,6 @@
   <attr path="/api/namespace/object[@cname='GtkImage']/method[@name='GetPixmap']/*/*[@name='pixmap']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GtkImage']/method[@name='GetPixmap']/*/*[@name='mask']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GtkImage']/method[@name='GetStock']/*/*[@name='stock_id']" name="pass_as">out</attr>
-  <attr path="/api/namespace/object[@cname='GtkImage']/method[@name='SetFromPixmap']/*/*[@type='GdkBitmap*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkIMContext']/signal[@name='DeleteSurrounding']" name="name">SurroundingDeleted</attr>
   <attr path="/api/namespace/object[@cname='GtkIMContext']/method[@name='GetPreeditString']/*/*[@name='str']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GtkIMContext']/method[@name='GetPreeditString']/*/*[@name='attrs']" name="pass_as">out</attr>
@@ -228,9 +222,6 @@
   <attr path="/api/namespace/object[@cname='GtkItem']/signal[@name='Toggle']" name="name">Toggled</attr>
   <attr path="/api/namespace/object[@cname='GtkLabel']/constructor[@cname='gtk_label_new_with_mnemonic']" name="preferred">1</attr>
   <attr path="/api/namespace/object[@cname='GtkLabel']/constructor[@cname='gtk_label_new_with_mnemonic']/*/*[@name='str']" name="property_name">label</attr>
-  <attr path="/api/namespace/object[@cname='GtkLayout']/constructor[@cname='gtk_layout_new']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkLayout']/method[@name='SetHadjustment']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkLayout']/method[@name='SetVadjustment']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkLayout']/signal[@name='SetScrollAdjustments']" name="name">ScrollAdjustmentsSet</attr>
   <attr path="/api/namespace/object[@cname='GtkListStore']/constructor[@cname='gtk_list_store_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkListStore']/constructor[@cname='gtk_list_store_newv']" name="hidden">1</attr>
@@ -244,7 +235,6 @@
   <attr path="/api/namespace/object[@cname='GtkMenuItem']/constructor[@cname='gtk_menu_item_new_with_mnemonic']" name="preferred">1</attr>
   <attr path="/api/namespace/object[@cname='GtkMenuItem']/constructor[@cname='gtk_menu_item_new_with_mnemonic']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkMenuItem']/constructor[@cname='gtk_menu_item_new_with_label']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkMenuItem']/method[@name='SetSubmenu']/*/*[@type='GtkWidget*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkMenuItem']/signal[@name='Activate']" name="name">Activated</attr>
   <attr path="/api/namespace/object[@cname='GtkMenuItem']/signal[@name='ChildNotify']" name="name">ChildNotified</attr>
   <attr path="/api/namespace/object[@cname='GtkMenuItem']/signal[@name='Deactivate']" name="name">Deactivated</attr>
@@ -255,7 +245,6 @@
   <attr path="/api/namespace/object[@cname='GtkMenuItem']/signal[@name='ToggleSizeAllocate']" name="name">ToggleSizeAllocated</attr>
   <attr path="/api/namespace/object[@cname='GtkMenuItem']/signal[@name='ToggleSizeRequest']" name="name">ToggleSizeRequested</attr>
   <attr path="/api/namespace/object[@cname='GtkMenu']/method[@name='Popup']/*/*[@type='GtkMenuPositionFunc']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkMenu']/method[@name='Popup']/*/*[@type='GtkWidget*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkMenu']/method[@name='SetScreen']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkMenuShell']/signal[@name='Cancel']" name="name">Canceled</attr>
   <attr path="/api/namespace/object[@cname='GtkMenuShell']/signal[@name='Deactivate']" name="name">Deactivated</attr>
@@ -264,11 +253,8 @@
   <attr path="/api/namespace/object[@cname='GtkObject']/constructor[@cname='gtk_object_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkObject']/method[@name='Destroy']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkObject']/signal[@name='Destroy']" name="name">Destroyed</attr>
-  <attr path="/api/namespace/object[@cname='GtkPixmap']/constructor[@cname='gtk_pixmap_new']/*/*[@type='GdkBitmap*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkPixmap']/method[@name='Set']/*/*[@type='GdkBitmap*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkPlug']/constructor[@cname='gtk_plug_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkPlug']/constructor[@cname='gtk_plug_new_for_display']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkProgressBar']/constructor[@cname='gtk_progress_bar_new_with_adjustment']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkProgressBar']" name="parent">GtkWidget</attr>
   <attr path="/api/namespace/object[@cname='GtkRadioButton']/constructor[@cname='gtk_radio_button_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkRadioButton']/constructor[@cname='gtk_radio_button_new_with_label_from_widget']" name="hidden">1</attr>
@@ -283,18 +269,14 @@
   <attr path="/api/namespace/object[@cname='GtkRcStyle']/method[@name='Ref']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkRcStyle']/method[@name='Unref']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkReadyEvent']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkScrolledWindow']/constructor[@cname='gtk_scrolled_window_new']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkScrolledWindow']/method[@name='GetPolicy']/*/*[@type='GtkPolicyType*']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GtkSeparatorToolItem']/property[@name='Draw']" name="new_flag">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkSpinButton']/constructor[@cname='gtk_spin_button_new']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkSpinButton']/constructor[@cname='gtk_spin_button_new_with_range']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkSpinButton']/method[@name='Configure']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTable']/constructor[@cname='gtk_table_new']/*/*[@name='columns']" name="property_name">n_columns</attr>
   <attr path="/api/namespace/object[@cname='GtkTable']/constructor[@cname='gtk_table_new']/*/*[@name='rows']" name="property_name">n_rows</attr>
   <attr path="/api/namespace/object[@cname='GtkTable']/method[@name='AttachDefaults']" name="name">Attach</attr>
   <attr path="/api/namespace/object[@cname='GtkTable']/method[@name='SetColSpacings']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTable']/method[@name='SetRowSpacings']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkTextBuffer']/constructor[@cname='gtk_text_buffer_new']/*/*[@type='GtkTextTagTable*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTextBuffer']/constructor[@cname='gtk_text_buffer_new']/*/*[@type='GtkTextTagTable*']" name="property_name">tag_table</attr>
   <attr path="/api/namespace/object[@cname='GtkTextBuffer']/method/*/*[@type='GtkTextIter*']" name="pass_as">ref</attr>
   <attr path="/api/namespace/object[@cname='GtkTextBuffer']/method[@name='ApplyTagByName']" name="name">ApplyTag</attr>
@@ -379,7 +361,6 @@
   <attr path="/api/namespace/object[@cname='GtkTreeViewColumn']/method[@name='PackEnd']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTreeViewColumn']/method[@name='PackStart']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTreeViewColumn']/method[@name='SetAttributes']" name="hidden">1</attr> 
-  <attr path="/api/namespace/object[@cname='GtkTreeView']/constructor[@cname='gtk_tree_view_new_with_model']/*/*[@type='GtkTreeModel*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTreeView']/method[@name='EnableModelDragDest']/*/*[@name='targets']" name="array">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTreeView']/method[@name='EnableModelDragSource']/*/*[@name='targets']" name="array">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTreeView']/method[@name='GetCellArea']/*/*[@name='rect']" name="pass_as">out</attr>
@@ -398,19 +379,12 @@
   <attr path="/api/namespace/object[@cname='GtkTreeView']/method[@name='RowActivated']" name="name">ActivateRow</attr>
   <attr path="/api/namespace/object[@cname='GtkTreeView']/method[@name='RowExpanded']" name="name">GetRowExpanded</attr>
   <attr path="/api/namespace/object[@cname='GtkTreeView']/method[@name='ScrollToCell']/*/*[@type='GtkTreePath*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkTreeView']/method[@name='ScrollToCell']/*/*[@type='GtkTreeViewColumn*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkTreeView']/method[@name='SetModel']/*/*[@type='GtkTreeModel*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkTreeView']/signal[@name='SetScrollAdjustments']" name="name">ScrollAdjustmentsSet</attr>
   <attr path="/api/namespace/object[@cname='GtkUIManager']/constructor[@cname='gtk_ui_manager_new_merge_id']" name="hidden">1</attr>
    <attr path="/api/namespace/object[@cname='GtkUIManager']/method[@cname='gtk_ui_manager_get_action_groups']" name="hidden">1</attr>
    <attr path="/api/namespace/object[@cname='GtkUIManager']/method[@name='GetToplevels']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkViewport']/constructor[@cname='gtk_viewport_new']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkViewport']/method[@name='SetHadjustment']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkViewport']/method[@name='SetVadjustment']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkViewport']/signal[@name='SetScrollAdjustments']" name="name">ScrollAdjustmentsSet</attr>
-  <attr path="/api/namespace/object[@cname='GtkVScale']/constructor[@cname='gtk_vscale_new']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkVScale']/constructor[@cname='gtk_vscale_new_with_range']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkVScrollbar']/constructor[@cname='gtk_vscrollbar_new']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']" name="disable_gtype_ctor">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/constructor[@cname='gtk_widget_new']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='ClassPath']/*/*[@type='gchar**']" name="pass_as">out</attr>
@@ -434,10 +408,8 @@
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='Ref']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='SetEvents']/*/*[@type='gint']" name="type">GdkEventMask</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='ModifyFont']/parameters/parameter[@type='PangoFontDescription*']" name="null_ok">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='SetScrollAdjustments']/*/*[@type='GtkAdjustment*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='Set']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='SetState']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='SetStyle']/*/*[@type='GtkStyle*']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='SizeRequest']/*/*[@name='requisition']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='StyleGet']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWidget']/method[@name='StyleGetProperty']" name="hidden">1</attr>
@@ -471,9 +443,7 @@
   <attr path="/api/namespace/object[@cname='GtkWindow']/method[@name='IsActive']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWindow']/method[@name='ListToplevels']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWindow']/method[@name='SetDefaultIconList']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkWindow']/method[@name='SetFocus']/*/*[@name='focus']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWindow']/method[@name='SetIconList']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@cname='GtkWindow']/method[@name='SetTransientFor']/*/*[@name='parent']" name="null_ok">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWindow']/property[@name='Screen']" name="new_flag">1</attr>
   <attr path="/api/namespace/object[@cname='GtkWindow']/signal[@name='ActivateDefault']" name="name">DefaultActivated</attr>
   <attr path="/api/namespace/object[@cname='GtkWindow']/signal[@name='ActivateFocus']" name="name">FocusActivated</attr>