diff --git a/TestProject/App/main.vp b/TestProject/App/main.vp
index c853563..ff705c1 100644
--- a/TestProject/App/main.vp
+++ b/TestProject/App/main.vp
@@ -1,12 +1,45 @@
 import w32.win32console as w32cmd
+from w32.win32console import SetConsoleOutputCP, SetConsoleCP
+import stdlib
+import memhub
+import string
 import t, c
 
 
 pagecode: t.CDefine = 65001
 
+@c.Attribute(t.attr.packed)
+class A:
+    a: int = 1
+    def __init__(self):
+        self.a = 10
+
+
+
+
 @t.CExport
 def main() -> int:
     w32cmd.SetConsoleOutputCP(pagecode)
     w32cmd.SetConsoleCP(pagecode)
+    SetConsoleOutputCP(pagecode)
+    SetConsoleCP(pagecode)
     print("你好，世界")
+
+    p = stdlib.malloc(1024)
+    m = memhub.MemPool(p, 1024)
+    
+    a: A | t.CPtr = m.alloc(A.__sizeof__())
+    string.memset(a, 0, A.__sizeof__())
+
+    string.memset(a, 0x00000002, A.__sizeof__())
+    print(a.a) # 2
+
+    a.__before_init__()
+    print(a.a) # 1
+
+    a.__init__()
+    print(a.a) # 10
+
+    print("你好")
+
     return 0