Windows like GtkTreeView key bindings question.

["Alex Nekorkin" <anekorkin gmail com>]

Hello All,

I'm trying to make my application tree view to be more intuitive for Windows
users. This includes key bindings for KP_RIGHT and KP_LEFT to expand and
collapse current accordingly.

I have implemented it by registering the callback (see the code below). The
only problem is: this construction stops working correctly if my tree store
emits any signals like "row-inserted" or "row-child-toggled" and etc. In
this case GtkTreeView stops refreshing after KP_RIGHT key press, so row
expansion is not displayed immediately after key press.

I have already spent about three days investigating this issue but didn't
find any solution. So, will appreciate any advise.

Thanks,
- Alex.

gboolean on_treeview1_key_press_event(GtkWidget * pTreeView,
                                     GdkEventKey * pEvent,
                                     gpointer pData)
{
   GtkTreeSelection *pSelection;
   GtkTreeModel *pModel;
   GtkTreePath *pPath;
   GList *pList;
   gboolean b;

   assert(pTreeView!=NULL);
   assert(pEvent!=NULL);

   g_mutex_lock(pMutex);

   if(pEvent->hardware_keycode==39)
   {
       pSelection = gtk_tree_view_get_selection((GtkTreeView*)pTreeView);
       assert(pSelection!=NULL);

       if(gtk_tree_selection_count_selected_rows(pSelection)==1)
       {
           pList = gtk_tree_selection_get_selected_rows(pSelection,
&pModel);
           assert(pList);

           pPath = (GtkTreePath*)pList->data;
           assert(pPath!=NULL);

           b = gtk_tree_view_expand_row((GtkTreeView*)pTreeView, pPath,
FALSE);
           g_list_foreach(pList, (GFunc)gtk_tree_path_free, NULL);
           g_list_free(pList);
       }

       g_mutex_unlock(pMutex);

       return TRUE;
   }

   if(pEvent->hardware_keycode==37)
   {
       pSelection = gtk_tree_view_get_selection((GtkTreeView*)pTreeView);
       assert(pSelection!=NULL);

       if(gtk_tree_selection_count_selected_rows(pSelection))
       {
           pList = gtk_tree_selection_get_selected_rows(pSelection,
&pModel);
           assert(pList);

           pPath = (GtkTreePath*)pList->data;
           assert(pPath!=NULL);

           if(gtk_tree_view_row_expanded((GtkTreeView*)pTreeView, pPath))
              gtk_tree_view_collapse_row((GtkTreeView*)pTreeView, pPath);
           else
           {
               gtk_tree_selection_unselect_all(pSelection);

               gtk_tree_path_up(pPath);
               gtk_tree_view_set_cursor((GtkTreeView*)pTreeView, pPath,
NULL, FALSE);
           }

           g_list_foreach(pList, (GFunc)gtk_tree_path_free, NULL);
           g_list_free(pList);
       }

       g_mutex_unlock(pMutex);

       return TRUE;
   }

   g_mutex_unlock(pMutex);

   return FALSE;
}