+
+/*
+ * Finds out which modifier mask is the one for numlock, as the user may change this.
+ *
+ */
+void xcb_get_numlock_mask(xcb_connection_t *conn) {
+ xcb_key_symbols_t *keysyms;
+ xcb_get_modifier_mapping_cookie_t cookie;
+ xcb_get_modifier_mapping_reply_t *reply;
+ xcb_keycode_t *modmap, numlock;
+ int mask, i;
+ const int masks[8] = { XCB_MOD_MASK_SHIFT,
+ XCB_MOD_MASK_LOCK,
+ XCB_MOD_MASK_CONTROL,
+ XCB_MOD_MASK_1,
+ XCB_MOD_MASK_2,
+ XCB_MOD_MASK_3,
+ XCB_MOD_MASK_4,
+ XCB_MOD_MASK_5 };
+
+ /* Request the modifier map */
+ cookie = xcb_get_modifier_mapping_unchecked(conn);
+
+ /* Get the keysymbols */
+ keysyms = xcb_key_symbols_alloc(conn);
+
+ if ((reply = xcb_get_modifier_mapping_reply(conn, cookie, NULL)) == NULL) {
+ xcb_key_symbols_free(keysyms);
+ return;
+ }
+
+ modmap = xcb_get_modifier_mapping_keycodes(reply);
+
+ /* Get the keycode for numlock */
+ numlock = xcb_key_symbols_get_keycode(keysyms, XCB_NUM_LOCK);
+
+ /* Check all modifiers (Mod1-Mod5, Shift, Control, Lock) */
+ for (mask = 0; mask < sizeof(masks); mask++)
+ for (i = 0; i < reply->keycodes_per_modifier; i++)
+ if (modmap[(mask * reply->keycodes_per_modifier) + i] == numlock)
+ xcb_numlock_mask = masks[mask];
+
+ xcb_key_symbols_free(keysyms);
+ free(reply);
+}