Fix NEWT KeyCode: Basic KeyCode Validation on X11, Windows and OSX

- X11: Add VK_QUOTE mapping

- OSX: Add single shift, ctrl alt key press;
       Fix mapping: Command -> Windows, Option -> ALT, add BACK_QUOTE and QUOTE.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/newt/native/X11Display.c b/src/newt/native/X11Display.c
index 9f29acc0c..341455f0f 100644
--- a/src/newt/native/X11Display.c
+++ b/src/newt/native/X11Display.c
@@ -148,6 +148,8 @@ static jint X11KeySym2NewtVKey(KeySym keySym) {
             return J_VK_HELP;
         case XK_grave:
             return J_VK_BACK_QUOTE;
+        case XK_apostrophe:
+            return J_VK_QUOTE;
     }
     return keySym;
 }