internal extern static int Xutf8LookupString(IntPtr xic, ref XEvent xevent, byte [] buffer, int num_bytes, out IntPtr keysym, out XLookupStatus status);
private int LookupString (ref XEvent xevent, int len, out XKeySym keysym, out XLookupStatus status)
{
IntPtr keysym_res;
int res;
status = XLookupStatus.XLookupNone;
IntPtr xic = GetXic (client_window);
if (xic != IntPtr.Zero && have_Xutf8LookupString && xevent.type == XEventName.KeyPress) {
do {
try {
res = Xutf8LookupString (xic, ref xevent, lookup_byte_buffer, 100, out keysym_res, out status);
} catch (EntryPointNotFoundException) {
have_Xutf8LookupString = false;
// call again, this time we'll go through the non-xic clause
return LookupString (ref xevent, len, out keysym, out status);
}
if (status != XLookupStatus.XBufferOverflow)
break;
lookup_byte_buffer = new byte [lookup_byte_buffer.Length << 1];
} while (true);
lookup_buffer.Length = 0;
string s = Encoding.UTF8.GetString (lookup_byte_buffer, 0, res);
lookup_buffer.Append (s);
keysym = (XKeySym) keysym_res.ToInt32 ();
return s.Length;
} else {
IntPtr statusPtr = IntPtr.Zero;
lookup_buffer.Length = 0;
res = XLookupString (ref xevent, lookup_buffer, len, out keysym_res, out statusPtr);
keysym = (XKeySym) keysym_res.ToInt32 ();
return res;
}
}
