Added some definitions.

include/shellapi.h

diff --git a/include/shellapi.h b/include/shellapi.h
index 950eab9..5165657 100644
--- a/include/shellapi.h
+++ b/include/shellapi.h
@@ -60,6 +60,9 @@
 #define NIF_MESSAGE             0x00000001
 #define NIF_ICON                0x00000002
 #define NIF_TIP                 0x00000004
+#define NIF_STATE               0x00000008
+#define NIF_INFO                0x00000010
+#define NIF_GUID                0x00000020
 
 #define NIM_ADD                 0x00000000
 #define NIM_MODIFY              0x00000001