logic/dinput: only ever use a single handle to DIRECTINPUT8 COM object

1 files changed, 27 insertions, 0 deletions

diff --git a/opentrack-logic/dinput.hpp b/opentrack-logic/dinput.hpp
new file mode 100644
index 00000000..9300f39f
--- /dev/null
+++ b/opentrack-logic/dinput.hpp
@@ -0,0 +1,27 @@
+#pragma once
+
+#ifdef _WIN32
+
+#ifndef DIRECTINPUT_VERSION
+#   define DIRECTINPUT_VERSION 0x800
+#endif
+#include <dinput.h>
+#include <windows.h>
+
+struct dinput_handle final
+{
+    using di_t = LPDIRECTINPUT8;
+private:
+    static dinput_handle self;
+    dinput_handle();
+    ~dinput_handle();
+    static di_t init_di();
+    di_t handle;
+public:
+     static di_t make_di();
+
+     dinput_handle(const dinput_handle&) = delete;
+     dinput_handle(dinput_handle&&) = delete;
+};
+
+#endif