diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..965a4cd
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,6 @@
+{
+    "files.associations": {
+        "stdio.h": "c",
+        "c_wrapper.h": "c"
+    }
+}
\ No newline at end of file
diff --git a/c_wrapper/build_dll.bat b/c_wrapper/build_dll.bat
new file mode 100644
index 0000000..e37282e
--- /dev/null
+++ b/c_wrapper/build_dll.bat
@@ -0,0 +1 @@
+go build -buildmode=c-shared -o c_wrapper.dll export.go
\ No newline at end of file
diff --git a/c_wrapper/build_run_test.bat b/c_wrapper/build_run_test.bat
new file mode 100644
index 0000000..73a826d
--- /dev/null
+++ b/c_wrapper/build_run_test.bat
@@ -0,0 +1,2 @@
+gcc -o test.exe -L. c_wrapper.dll test.c
+test.exe
\ No newline at end of file
diff --git a/c_wrapper/build_test.bat b/c_wrapper/build_test.bat
new file mode 100644
index 0000000..dcab261
--- /dev/null
+++ b/c_wrapper/build_test.bat
@@ -0,0 +1 @@
+gcc -o test.exe -L. c_wrapper.dll test.c
\ No newline at end of file
diff --git a/c_wrapper/c_init_login.go b/c_wrapper/c_init_login.go
index a414e8c..66b6ee4 100644
--- a/c_wrapper/c_init_login.go
+++ b/c_wrapper/c_init_login.go
@@ -36,9 +36,9 @@ func init_sdk(onConnecting C.base_func,
 	callback := NewConnCallback(onConnecting, onConnectSuccess, onKickedOffline, onUserTokenExpired, onConnectFailed)
 	return open_im_sdk.InitSDK(callback, C.GoString(operationID), C.GoString(config))
 }
-func main() {
+// func main() {
 
-}
+// }
 
 type ConnCallback struct {
 	onConnecting       C.base_func
diff --git a/c_wrapper/c_wrapper.dll b/c_wrapper/c_wrapper.dll
index d6ba5f7..ed82ea6 100644
Binary files a/c_wrapper/c_wrapper.dll and b/c_wrapper/c_wrapper.dll differ
diff --git a/c_wrapper/c_wrapper.h b/c_wrapper/c_wrapper.h
index 5287a02..a14b996 100644
--- a/c_wrapper/c_wrapper.h
+++ b/c_wrapper/c_wrapper.h
@@ -19,28 +19,6 @@ typedef struct { const char *p; ptrdiff_t n; } _GoString_;
 /* Start of preamble from import "C" comments.  */
 
 
-#line 3 "c_init_login.go"
-
-#include <stdio.h>
-
-typedef void (*base_func)();
-typedef void (*err_func)(int,void *);
-
-extern base_func _onConnecting;
-extern base_func _onConnectSuccess;
-extern base_func _onKickedOffline;
-extern base_func _onUserTokenExpired;
-extern err_func _onConnectFailed;
-
-extern void c_onConnecting();
-extern void c_onConnectSuccess();
-extern void c_onKickedOffline();
-extern void c_onUserTokenExpired();
-extern void c_onConnectFailed(int ,void*);
-
-
-
-#line 1 "cgo-generated-wrapper"
 
 
 /* End of preamble from import "C" comments.  */
@@ -96,7 +74,7 @@ typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;
 extern "C" {
 #endif
 
-extern __declspec(dllexport) GoUint8 init_sdk(base_func onConnecting, base_func onConnectSuccess, base_func onKickedOffline, base_func onUserTokenExpired, err_func onConnectFailed, char* operationID, char* config);
+extern __declspec(dllexport) void Init_SDK();
 
 #ifdef __cplusplus
 }
diff --git a/c_wrapper/export.go b/c_wrapper/export.go
new file mode 100644
index 0000000..494080f
--- /dev/null
+++ b/c_wrapper/export.go
@@ -0,0 +1,13 @@
+package main
+
+import "C"
+import "fmt"
+
+//export Init_SDK
+func Init_SDK() {
+    fmt.Println("Init SDK")
+}
+
+func main() {
+
+}
diff --git a/c_wrapper/test.c b/c_wrapper/test.c
new file mode 100644
index 0000000..6dcce65
--- /dev/null
+++ b/c_wrapper/test.c
@@ -0,0 +1,10 @@
+// gcc -o test.exe -lc_wrapper.dll test.c
+
+#include <stdio.h>
+
+#include "c_wrapper.h"
+
+void main(int argc, char **argv)
+{
+    Init_SDK();
+}
\ No newline at end of file
diff --git a/c_wrapper/test.go b/c_wrapper/test.go
deleted file mode 100644
index f4e4cbe..0000000
--- a/c_wrapper/test.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package main
-
-/*
-#include <stdio.h>
-typedef void (*base_func)();
-typedef void (*err_func)(int,void *);
-
-base_func _onConnecting;
-base_func _onConnectSuccess;
-base_func _onKickedOffline;
-base_func _onUserTokenExpired;
-err_func _onConnectFailed;
-
-void c_onConnecting()
-{
-_onConnecting();
-}
-void c_onConnectSuccess()
-{
-_onConnectSuccess();
-}
-void c_onKickedOffline()
-{
-_onKickedOffline();
-}
-void c_onUserTokenExpired()
-{
-_onUserTokenExpired();
-}
-void c_onConnectFailed(int errCode,void* errMsg)
-{
-_onConnectFailed(errCode,errMsg);
-}
-*/
-import "C"