From e4f28df310d379cd8e02eceb53d85a96cf51624d Mon Sep 17 00:00:00 2001
From: Simon Rozman <simon@rozman.si>
Date: Tue, 8 Jul 2025 11:18:21 +0200
Subject: [PATCH] Common: Enforce explicit handle validation

Some invalid handle values are -1 or INVALID_HANDLE_VALUE, hence our
handle template has a specific invalid handle value parameter we should
always test against. Time and again, I find my code simply comparing
handle against zero.

Signed-off-by: Simon Rozman <simon@rozman.si>
---
 include/MacStd/common.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/MacStd/common.hpp b/include/MacStd/common.hpp
index 00d340a..497e804 100644
--- a/include/MacStd/common.hpp
+++ b/include/MacStd/common.hpp
@@ -323,6 +323,10 @@ namespace macstd
 			}
 		}
 
+	private:
+		// Force use of valid() method when testing handle.
+		operator bool() const;
+
 	protected:
 		T m_h; ///< Object handle
 	};