Added zillions of #if wxUSE_XXX

Removed cmndlgs usage of wxSizer and constraints
  Changed occurences of wxConv_xxx to wxConvXxxx and
    changed some wxConvLibc to wxConvCurrent
  Added Unicode tests to typetests (not finished)
  Compile fix for wxString in Unicode mode - we have
   to use the "experimental" printf then, I guess.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2794 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/checkbox.cpp

@@ -14,6 +14,8 @@
 
 #include "wx/checkbox.h"
 
+#if wxUSE_CHECKBOX
+
 #include "gdk/gdk.h"
 #include "gtk/gtk.h"
 
@@ -184,3 +186,4 @@ void wxCheckBox::ApplyWidgetStyle()
     gtk_widget_set_style( m_widgetLabel, m_widgetStyle );
 }
 
+#endif