#define wxCAL_SUNDAY_FIRST 0x0000
#define wxCAL_MONDAY_FIRST 0x0001
#define wxCAL_SHOW_HOLIDAYS 0x0002
+#define wxCAL_NO_YEAR_CHANGE 0x0004
+#define wxCAL_NO_MONTH_CHANGE 0x000c // no month change => no year change
/*
* extended dialog specifiers. these values are stored in a different