-//-----------------------------------------------------------------------------
-// classes
-//-----------------------------------------------------------------------------
+// there is no "right" choice of the checkbox indicators, so allow the user to
+// define them himself if he wants
+#ifndef wxCHECKLBOX_CHECKED
+ #define wxCHECKLBOX_CHECKED _T('x')
+ #define wxCHECKLBOX_UNCHECKED _T(' ')