/* The modifiers XEmacs knows about; these appear in key and button events. */
-#define MOD_CONTROL (1<<0)
-#define MOD_META (1<<1)
-#define MOD_SUPER (1<<2)
-#define MOD_HYPER (1<<3)
-#define MOD_ALT (1<<4)
-#define MOD_SHIFT (1<<5) /* not used for dual-case characters */
+#define XEMACS_MOD_CONTROL (1<<0)
+#define XEMACS_MOD_META (1<<1)
+#define XEMACS_MOD_SUPER (1<<2)
+#define XEMACS_MOD_HYPER (1<<3)
+#define XEMACS_MOD_ALT (1<<4)
+#define XEMACS_MOD_SHIFT (1<<5) /* not used for dual-case characters */
+#define XEMACS_MOD_BUTTON1 (1<<6)
+#define XEMACS_MOD_BUTTON2 (1<<7)
+#define XEMACS_MOD_BUTTON3 (1<<8)
+#define XEMACS_MOD_BUTTON4 (1<<9)
+#define XEMACS_MOD_BUTTON5 (1<<10)