added wxArtProvider::InsertProvider to accompany PushProvider

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40941 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/artprov.h

@@ -112,9 +112,14 @@ typedef wxString wxArtID;
 class WXDLLEXPORT wxArtProvider : public wxObject
 {
 public:
-    // Add new provider to the top of providers stack.
+    // Add new provider to the top of providers stack (i.e. the provider will
+    // be querier first of all).
     static void PushProvider(wxArtProvider *provider);
 
+    // Add new provider to the bottom of providers stack (i.e. the provider
+    // will be queried as the last one).
+    static void InsertProvider(wxArtProvider *provider);
+
     // Remove latest added provider and delete it.
     static bool PopProvider();
 
@@ -152,7 +157,7 @@ protected:
     {
         return GetSizeHint(client, true);
     }
-                             
+
     // Derived classes must override this method to create requested
     // art resource. This method is called only once per instance's
     // lifetime for each requested wxArtID.
@@ -160,6 +165,9 @@ protected:
                                   const wxArtClient& WXUNUSED(client),
                                   const wxSize& WXUNUSED(size)) = 0;
 
+private:
+    static void InitProvidersList();
+
 private:
     // list of providers:
     static wxArtProvidersList *sm_providers;