diff --git a/README.md b/README.md
index c80f2b7..d7d6873 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@
 2. G_DEFINE_TYPE用法 https://www.codenong.com/cs106693497/  
 3. G_DEFINE_TYPE用法 https://blog.csdn.net/evsqiezi/article/details/83049655
 4. g_type_register_static_simple(type, "A", sizeof(A_class), A_class_init, sizeof(A), A_init, 0LL);
+5. typedef int (*pFunc_t)(char *frame, int len);//定义了一个类型pFunc_t 定义函数指针类型
+6. gulong g_signal_connect_closure_by_id ( GObject* instance, guint signal_id, GQuark detail, GClosure* closure, gboolean after ) 连接信号对象 The handler ID (always greater than 0)
 
 
 ## https://docs.sailfishos.org/Reference/Architecture/