Refactor

apps/LoopThroughWithOpenGLCompositing/NativeHandles.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <windows.h>
+
+class UniqueHandle
+{
+public:
+	explicit UniqueHandle(HANDLE handle = NULL) : mHandle(handle) {}
+	~UniqueHandle() { reset(); }
+
+	UniqueHandle(const UniqueHandle&) = delete;
+	UniqueHandle& operator=(const UniqueHandle&) = delete;
+
+	UniqueHandle(UniqueHandle&& other) noexcept : mHandle(other.release()) {}
+
+	UniqueHandle& operator=(UniqueHandle&& other) noexcept
+	{
+		if (this != &other)
+			reset(other.release());
+		return *this;
+	}
+
+	HANDLE get() const { return mHandle; }
+	bool valid() const { return mHandle != NULL && mHandle != INVALID_HANDLE_VALUE; }
+
+	HANDLE release()
+	{
+		HANDLE handle = mHandle;
+		mHandle = NULL;
+		return handle;
+	}
+
+	void reset(HANDLE handle = NULL)
+	{
+		if (valid())
+			CloseHandle(mHandle);
+		mHandle = handle;
+	}
+
+private:
+	HANDLE mHandle;
+};