1. wxStaticBox doesn't draw over the underlying controls any more

2. a couple of new helper functions in msw/private.h: wxColourToRGB and
   wxRGBToColour are handy to avoid writing horribly long and ugly RGB <-> wxColour
   conversions explicitly
3. modified wxDirDialog to be more comprehensible (to me), hopefully it also
   works better


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4468 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/control.h

@@ -34,8 +34,8 @@ public:
     virtual void Command(wxCommandEvent &event);
 
 protected:
-    // creates the controls (invokes wxWindowBase::CreateBase) and adds it to
-    // the list of parents children
+    // creates the control (calls wxWindowBase::CreateBase inside) and adds it
+    // to the list of parents children
     bool CreateControl(wxWindowBase *parent,
                        wxWindowID id,
                        const wxPoint& pos,
@@ -50,6 +50,18 @@ protected:
 #endif
                        const wxString& name);
 
+    // an overloaded version for the controls without validators
+    bool CreateControl(wxWindowBase *parent,
+                       wxWindowID id,
+                       const wxPoint& pos,
+                       const wxSize& size,
+                       long style,
+                       const wxString& name)
+    {
+        return CreateControl(parent, id, pos, size, style,
+                             wxDefaultValidator, name);
+    }
+
     // inherit colour and font settings from the parent window
     void InheritAttributes();
 };