Added the sf::Event::KeyEvent::System member (implements feature #8)

bindings/c/include/SFML/Window/Event.h

@@ -203,6 +203,7 @@ struct sfKeyEvent
     sfBool      Alt;
     sfBool      Control;
     sfBool      Shift;
+    sfBool      System;
 };
 
 ////////////////////////////////////////////////////////////

bindings/c/src/SFML/ConvertEvent.h

@@ -58,6 +58,7 @@ inline void ConvertEvent(const sf::Event& SFMLEvent, sfEvent* event)
             event->Key.Alt     = SFMLEvent.Key.Alt     ? sfTrue : sfFalse;
             event->Key.Control = SFMLEvent.Key.Control ? sfTrue : sfFalse;
             event->Key.Shift   = SFMLEvent.Key.Shift   ? sfTrue : sfFalse;
+            event->Key.System  = SFMLEvent.Key.System  ? sfTrue : sfFalse;
             break;
 
         case sfEvtMouseWheelMoved :

bindings/dotnet/src/Window/Event.cs

@@ -242,6 +242,9 @@ namespace SFML
 
             /// <summary>Is the Shift modifier pressed?</summary>
             public int Shift;
+
+            /// <summary>Is the System modifier pressed?</summary>
+            public int System;
         }
 
         ////////////////////////////////////////////////////////////

bindings/dotnet/src/Window/EventArgs.cs

@@ -23,6 +23,7 @@ namespace SFML
                 Alt     = e.Alt != 0;
                 Control = e.Control != 0;
                 Shift   = e.Shift != 0;
+                System  = e.System != 0;
             }
 
             ////////////////////////////////////////////////////////////
@@ -37,7 +38,8 @@ namespace SFML
                        " Code(" + Code + ")" + 
                        " Alt(" + Alt + ")" + 
                        " Control(" + Control + ")" + 
-                       " Shift(" + Shift + ")";
+                       " Shift(" + Shift + ")" +
+                       " System(" + System + ")";
             }
 
             /// <summary>Code of the key (see KeyCode enum)</summary>
@@ -51,6 +53,9 @@ namespace SFML
 
             /// <summary>Is the Shift modifier pressed?</summary>
             public bool Shift;
+
+            /// <summary>Is the System modifier pressed?</summary>
+            public bool System;
         }
 
         ////////////////////////////////////////////////////////////