if ( isdigit(keycode) || keycode == '+' || keycode == '-' || keycode == '.'
|| keycode == WXK_NUMPAD0
|| keycode == WXK_NUMPAD1
if ( isdigit(keycode) || keycode == '+' || keycode == '-' || keycode == '.'
|| keycode == WXK_NUMPAD0
|| keycode == WXK_NUMPAD1