1 files changed, 20 insertions, 0 deletions
diff --git a/src/System.Private.CoreLib/shared/Interop/Windows/Kernel32/Interop.MultiByteToWideChar.cs b/src/System.Private.CoreLib/shared/Interop/Windows/Kernel32/Interop.MultiByteToWideChar.cs
new file mode 100644
index 000000000..158e4db3f
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/Interop/Windows/Kernel32/Interop.MultiByteToWideChar.cs
@@ -0,0 +1,20 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal partial class Interop
+{
+    internal partial class Kernel32
+    {
+        [DllImport(Libraries.Kernel32)]
+        internal static extern unsafe int MultiByteToWideChar(
+            uint CodePage, uint dwFlags,
+            byte* lpMultiByteStr, int cbMultiByte,
+            char* lpWideCharStr, int cchWideChar);
+
+        internal const uint MB_PRECOMPOSED = 0x00000001;
+    }
+}