Applied minor documentation corrections to wxRegKey from charles (fixes #10407).

[wxWidgets.git] / src / gtk / dataview.cpp

diff --git a/src/gtk/dataview.cpp b/src/gtk/dataview.cpp
index 9d9e7d47fa9c4e39ac5477eacc80ac7f2fe6efc4..0ee71bf7dde67c0a12e4b10fa65213972c42905c 100644 (file)
--- a/src/gtk/dataview.cpp
+++ b/src/gtk/dataview.cpp
@@ -641,8 +641,10 @@ wxgtk_tree_model_iter_n_children (GtkTreeModel *tree_model,
 {
     GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
     g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
-    g_return_val_if_fail (wxtree_model->stamp == iter->stamp, 0);
-
+    
+    if (iter != NULL)
+        g_return_val_if_fail (wxtree_model->stamp == iter->stamp, 0);
+        
     return wxtree_model->internal->iter_n_children( iter );
 }
 
@@ -1103,11 +1105,10 @@ gtk_wx_cell_renderer_render (GtkCellRenderer      *renderer,
         wxRect renderrect( rect.x, rect.y, rect.width, rect.height );
         wxWindowDC* dc = (wxWindowDC*) cell->GetDC();
         wxWindowDCImpl *impl = (wxWindowDCImpl *) dc->GetImpl();
-        if (impl->m_gdkwindow == NULL)
-        {
-            impl->m_gdkwindow = window;
-            impl->SetUpDC();
-        }
+        // Reinitilise GDK window everytime as drawing can also
+        // be done into DnD drop window.
+        impl->m_gdkwindow = window;
+        impl->SetUpDC();
 
         int state = 0;
         if (flags & GTK_CELL_RENDERER_SELECTED)
@@ -3343,6 +3344,9 @@ gint wxDataViewCtrlInternal::iter_n_children( GtkTreeIter *iter )
     }
     else
     {
+        if (iter == NULL)
+            return m_root->GetChildCount();
+            
         wxDataViewItem item( (void*) iter->user_data );
 
         if (!m_wx_model->IsContainer( item ))