cashlalala · March 17, 2021 01:19 · Jun 23, 2019
diff --git a/Program.cs b/Program.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace GoSharedDLL
+{
+    class Program
+    {
+        [DllImport("shared.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall)]
+        private static extern IntPtr ReturnReversedString(byte[] input);
+
+        static void Main(string[] args)
+        {
+            var input = Encoding.UTF8.GetBytes("Hello World!");
+            var resultbytes = ReturnReversedString(input);
+            var output = Marshal.PtrToStringAnsi(resultbytes);
+            Console.WriteLine(output);
+            Console.WriteLine("Press enter to continue...");
+            Console.ReadLine();
+        }
+    }
+}
diff --git a/shared.go b/shared.go
@@ -0,0 +1,18 @@
+package main
+
+import "C"
+
+//export ReturnReversedString
+func ReturnReversedString(input *C.char) *C.char {
+	str := C.GoString(input)
+	runes := []rune(str)
+	for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
+		runes[i], runes[j] = runes[j], runes[i]
+	}
+	retval := string(runes)
+	return C.CString(retval)
+}
+
+func main() {}
+
+// compile using go build -o shared.dll -buildmode=c-shared