Added new GUI based on wxWidgets. Patch from bit.

src/wx-sdl2-keyboard.c

@@ -0,0 +1,23 @@
+#include "plat-keyboard.h"
+#include <string.h>
+
+int pcem_key[272];
+int rawinputkey[272];
+
+void keyboard_init()
+{
+        memset(pcem_key, 0, sizeof(pcem_key));
+}
+
+void keyboard_close()
+{
+}
+
+void keyboard_poll_host()
+{
+        int c;
+
+        for (c = 0; c < 272; ++c)
+                pcem_key[c] = rawinputkey[c];
+}
+