Fix for wireless keyboard char

diff --git a/src/main/java/openperipheral/addons/glasses/GuiCapture.java b/src/main/java/openperipheral/addons/glasses/GuiCapture.java
index f500593..cf9b1d8 100644
--- a/src/main/java/openperipheral/addons/glasses/GuiCapture.java
+++ b/src/main/java/openperipheral/addons/glasses/GuiCapture.java
@@ -138,7 +138,39 @@ public class GuiCapture extends GuiScreen {
        } else {
            final boolean state = Keyboard.getEventKeyState();
            if (state) {
-               final char ch = Keyboard.getEventCharacter();
+               char ch = Keyboard.getEventCharacter();
+        switch (key) {
+          case Keyboard.KEY_CLEAR:
+          case Keyboard.KEY_DELETE:
+          case Keyboard.KEY_DOWN:
+          case Keyboard.KEY_END:
+          case Keyboard.KEY_F1:
+          case Keyboard.KEY_F2:
+          case Keyboard.KEY_F3:
+          case Keyboard.KEY_F4:
+          case Keyboard.KEY_F5:
+          case Keyboard.KEY_F6:
+          case Keyboard.KEY_F7:
+          case Keyboard.KEY_F8:
+          case Keyboard.KEY_F9:
+          case Keyboard.KEY_F10:
+          case Keyboard.KEY_F11:
+          case Keyboard.KEY_F12:
+          case Keyboard.KEY_HOME:
+          case Keyboard.KEY_INSERT:
+          case Keyboard.KEY_LEFT:
+          case Keyboard.KEY_NEXT:
+          case Keyboard.KEY_NUMLOCK:
+          case Keyboard.KEY_PAUSE:
+          case Keyboard.KEY_PRIOR:
+          case Keyboard.KEY_RIGHT:
+          case Keyboard.KEY_SCROLL:
+          case Keyboard.KEY_UP:
+            ch = 0;
+            break;
+          default:
+            break;
+        }

                final boolean isRepeat = Keyboard.isRepeatEvent();
                new GlassesKeyDownEvent(guid, ch, key, isRepeat).sendToServer();
/* testing edit */