From 3c78ecf7fc36feaa01df4712023f835ef6b5db44 Mon Sep 17 00:00:00 2001
From: Tony Roberts <tony@pyxll.com>
Date: Wed, 26 Aug 2026 11:51:31 +0100
Subject: [PATCH] Set VARIANT type to VT_UNKNOWN if set to non-IDispatch
 instance

When converting an object to a VARIANT, if QueryInterface fails to get
the IDispatch interface, set the type to VT_IUNKNOWN.

Fixes #93
---
 native/variant.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/native/variant.cpp b/native/variant.cpp
index fdebd3d2..2d2878b5 100644
--- a/native/variant.cpp
+++ b/native/variant.cpp
@@ -110,7 +110,10 @@ class ComObjectVariandHandlerImpl : public VariantHandlerImpl<VT_DISPATCH,xducer
 			addr(v)->Release();
 			addr(v) = pDisp;
 			v->vt = VT_DISPATCH;
-		} // otherwise use VT_UNKNOWN. See java.net issue 2.
+		} else {
+			// otherwise use VT_UNKNOWN. See java.net issue 2.
+			v->vt = VT_UNKNOWN;
+		}
 		return v;
 	}
 	jobject get( JNIEnv* env, VARIANT* v, jclass retType ) {