typedef struct {
const char* name;
int keysym;
-} a_name2keysym;
+} name2keysym_t;
struct key_range {
int start;
int extra_count;
struct key_range *keypad_range;
struct key_range *numlock_range;
-} a_kbd_layout;
+} kbd_layout_t;
+/* scancode without modifiers */
+#define SCANCODE_KEYMASK 0xff
+/* scancode without grey or up bit */
+#define SCANCODE_KEYCODEMASK 0x7f
-void *init_keyboard_layout(const a_name2keysym *table, const char *language);
+/* "grey" keys will usually need a 0xe0 prefix */
+#define SCANCODE_GREY 0x80
+#define SCANCODE_EMUL0 0xE0
+/* "up" flag */
+#define SCANCODE_UP 0x80
+
+/* Additional modifiers to use if not catched another way. */
+#define SCANCODE_SHIFT 0x100
+#define SCANCODE_CTRL 0x200
+#define SCANCODE_ALT 0x400
+#define SCANCODE_ALTGR 0x800
+
+
+void *init_keyboard_layout(const name2keysym_t *table, const char *language);
int keysym2scancode(void *kbd_layout, int keysym);
int keycode_is_keypad(void *kbd_layout, int keycode);
int keysym_is_numlock(void *kbd_layout, int keysym);