1 files changed, 46 insertions, 0 deletions
diff --git a/src/classlibnative/bcltype/oavariant.h b/src/classlibnative/bcltype/oavariant.h
new file mode 100644
index 0000000000..30f7cb1958
--- /dev/null
+++ b/src/classlibnative/bcltype/oavariant.h
@@ -0,0 +1,46 @@
+// 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.
+//
+// File: OAVariant.h
+//
+
+//
+// Purpose: Wrapper for Ole Automation compatable math ops.
+// Calls through to OleAut.dll
+//
+
+//
+
+#ifndef _OAVARIANT_H_
+#define _OAVARIANT_H_
+
+#ifndef FEATURE_COMINTEROP
+#error FEATURE_COMINTEROP is required for this file
+#endif // FEATURE_COMINTEROP
+
+#include "variant.h"
+
+class COMOAVariant
+{
+public:
+
+    // Utility Functions
+    // Conversion between COM+ variant type field & OleAut Variant enumeration
+    // WinCE doesn't support Variants entirely.
+    static VARENUM CVtoVT(const CVTypes cv);
+    static CVTypes VTtoCV(const VARENUM vt);
+
+    // Conversion between COM+ Variant & OleAut Variant.  ToOAVariant
+    // returns true if the conversion process allocated an object (like a BSTR).
+    static bool ToOAVariant(const VariantData * const var, VARIANT * oa);
+    static void FromOAVariant(const VARIANT * const oa, VariantData * const& var);
+
+    // Throw a specific exception for a failure, specified by a given HRESULT.
+    static void OAFailed(const HRESULT hr);
+
+    static FCDECL6(void, ChangeTypeEx, VariantData *result, VariantData *op, LCID lcid, void *targetType, int cvType, INT16 flags);
+};
+
+
+#endif  // _OAVARIANT_H_