Revert back to DirectInput COM initialization

Using and linking against DirectInput libraries directly caused dinput.dll
to be loaded at startup time. Windows 10 kills applications started from
services (as the Jenkins slave service) that load dinput.dll.
This commit also adds some safety in case no helper windows could be created.

src/blackinput/win/joystickwindows.cpp

@@ -152,15 +152,20 @@ namespace BlackInput
 
     CJoystickWindows::CJoystickWindows(QObject *parent) : IJoystick(parent)
     {
+        // Initialize COM
+        CoInitializeEx(nullptr, COINIT_MULTITHREADED);
         this->createHelperWindow();
-        this->initDirectInput();
+
-        this->enumJoystickDevices();
+        if (helperWindow)
+        {
+            this->initDirectInput();
+            this->enumJoystickDevices();
+        }
     }
 
     CJoystickWindows::~CJoystickWindows()
     {
-        m_joystickDevices.clear();
+        CoUninitialize();
-        m_directInput.reset();
     }
 
     void ReleaseDirectInput(IDirectInput8 *obj)
@@ -171,8 +176,13 @@ namespace BlackInput
     HRESULT CJoystickWindows::initDirectInput()
     {
         IDirectInput8 *directInput = nullptr;
-        HRESULT hr = DirectInput8Create(GetModuleHandle(nullptr), DIRECTINPUT_VERSION, IID_IDirectInput8, reinterpret_cast<LPVOID *>(&directInput), nullptr);
+        // HRESULT hr = DirectInput8Create(GetModuleHandle(nullptr), DIRECTINPUT_VERSION, IID_IDirectInput8, reinterpret_cast<LPVOID *>(&directInput), nullptr);
+        HRESULT hr = CoCreateInstance(CLSID_DirectInput8, nullptr, CLSCTX_INPROC_SERVER, IID_IDirectInput8, reinterpret_cast<LPVOID *>(&directInput));
+        if(FAILED(hr)) { return hr; }
         m_directInput = DirectInput8Ptr(directInput, ReleaseDirectInput);
+
+        HINSTANCE instance = GetModuleHandle(nullptr);
+        hr = m_directInput->Initialize(instance, DIRECTINPUT_VERSION);
         return hr;
     }
 

src/blackinput/win/joystickwindows.h

@@ -131,15 +131,16 @@ namespace BlackInput
         //! Joystick enumeration callback
         static BOOL CALLBACK enumJoysticksCallback(const DIDEVICEINSTANCE *pdidInstance, VOID *pContext);
 
-        DirectInput8Ptr m_directInput;                   //!< DirectInput object
+        ATOM helperWindowClass = 0;
+        HWND helperWindow = nullptr;
+
+        DirectInput8Ptr m_directInput;                 //!< DirectInput object
         QVector<CJoystickDevice *> m_joystickDevices;  //!< Joystick devices
 
         BlackMisc::Input::CHotkeyCombination m_buttonCombination;
 
         const TCHAR *helperWindowClassName = TEXT("HelperWindow");
         const TCHAR *helperWindowName = TEXT("JoystickCatcherWindow");
-        ATOM helperWindowClass = 0;
-        HWND helperWindow = nullptr;
     };
 } // ns