refs #317 IKeyboard implementation fixes

- private constructor
- deleted public copy constructor
- deleted public assignment operator

src/blackinput/linux/keyboard_linux.h

@@ -24,8 +24,15 @@ namespace BlackInput
     class CKeyboardLinux : public IKeyboard
     {
         Q_OBJECT
+
     public:
 
+        //! \brief Copy Constructor
+        CKeyboardLinux(CKeyboardLinux const&) = delete;
+
+        //! \brief Assignment operator
+        void operator=(CKeyboardLinux const&) = delete;
+
         //! \brief Destructor
         virtual ~CKeyboardLinux();
 
@@ -40,20 +47,9 @@ namespace BlackInput
 
     protected:
 
-        friend class IKeyboard;
-
-        //! \brief Constructor
-        CKeyboardLinux(QObject *parent = nullptr);
-
-        //! \brief Copy Constructor
-        CKeyboardLinux(CKeyboardLinux const&);
-
         //! \copydoc IKeyboard::init()
         virtual bool init() override;
 
-        //! \brief Assignment operator
-        void operator=(CKeyboardLinux const&);
-
     private slots:
 
         //! Changed directory to linux devices
@@ -64,6 +60,11 @@ namespace BlackInput
 
     private:
 
+        friend class IKeyboard;
+
+        //! \brief Constructor
+        CKeyboardLinux(QObject *parent = nullptr);
+
         /*!
          * \brief Constructor
          * \param keySet

src/blackinput/osx/keyboard_mac.h

@@ -21,8 +21,15 @@ namespace BlackInput
     class CKeyboardMac : public IKeyboard
     {
         Q_OBJECT
+
     public:
 
+        //! \brief Copy Constructor
+        CKeyboardMac(CKeyboardMac const&) = delete;
+
+        //! \brief Assignment operator
+        void operator=(CKeyboardMac const&) = delete;
+
         //! \brief Destructor
         virtual ~CKeyboardMac();
 
@@ -37,22 +44,16 @@ namespace BlackInput
 
     protected:
 
-        friend class IKeyboard;
-
-        //! \brief Constructor
-        CKeyboardMac(QObject *parent = nullptr);
-
-        //! \brief Copy Constructor
-        CKeyboardMac(CKeyboardMac const&);
-
         //! \copydoc IKeyboard::init()
         virtual bool init() override;
 
-        //! \brief Assignment operator
-        void operator=(CKeyboardMac const&);
-
     private:
 
+        friend class IKeyboard;
+
+        //! Constructor
+        CKeyboardMac(QObject *parent = nullptr);
+
         /*!
          * \brief Constructor
          * \param keySet

src/blackinput/win/keyboard_windows.h

@@ -28,6 +28,12 @@ namespace BlackInput
         Q_OBJECT
     public:
 
+        //! \brief Copy Constructor
+        CKeyboardWindows(CKeyboardWindows const&) = delete;
+
+        //! \brief Assignment operator
+        void operator=(CKeyboardWindows const&) = delete;
+
         //! \brief Destructor
         virtual ~CKeyboardWindows();
 
@@ -48,22 +54,16 @@ namespace BlackInput
 
     protected:
 
+        //! \copydoc IKeyboard::init()
+        virtual bool init() override;
+
+    private:
+
         friend class IKeyboard;
 
         //! \brief Constructor
         CKeyboardWindows(QObject *parent = nullptr);
 
-        //! \brief Copy Constructor
-        CKeyboardWindows(CKeyboardWindows const&);
-
-        //! \copydoc IKeyboard::init()
-        virtual bool init() override;
-
-        //! \brief Assignment operator
-        void operator=(CKeyboardWindows const&);
-
-    private:
-
         /*!
          * \brief Constructor
          * \param keySet