very, very simple WP with midi CC out

include/libremidi/backends/winmm.hpp

@@ -0,0 +1,36 @@
+#pragma once
+#include <libremidi/backends/winmm/midi_in.hpp>
+#include <libremidi/backends/winmm/midi_out.hpp>
+#include <libremidi/backends/winmm/observer.hpp>
+
+// Default for Windows is to add an identifier to the port names; this
+// flag can be defined (e.g. in your project file) to disable this behaviour.
+// #define LIBREMIDI_DO_NOT_ENSURE_UNIQUE_PORTNAMES
+
+//*********************************************************************//
+//  API: Windows Multimedia Library (MM)
+//*********************************************************************//
+
+// API information deciphered from:
+//  -
+//  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_midi_reference.asp
+
+// Thanks to Jean-Baptiste Berruchon for the sysex code.
+namespace libremidi
+{
+
+struct winmm_backend
+{
+  using midi_in = midi_in_winmm;
+  using midi_out = midi_out_winmm;
+  using midi_observer = observer_winmm;
+  using midi_in_configuration = winmm_input_configuration;
+  using midi_out_configuration = winmm_output_configuration;
+  using midi_observer_configuration = winmm_observer_configuration;
+  static const constexpr auto API = libremidi::API::WINDOWS_MM;
+  static const constexpr auto name = "winmm";
+  static const constexpr auto display_name = "Windows Multimedia";
+
+  static constexpr inline bool available() noexcept { return true; }
+};
+}