void setWMClass(String[] cl) {
if (cl.length != 2) {
throw new IllegalArgumentException("WM_CLASS_NAME consists of exactly two strings");
}
XToolkit.awtLock();
try {
XAtom xa = XAtom.get(XAtom.XA_WM_CLASS);
xa.setProperty8(getWindow(), cl[0] + '\0' + cl[1]);
} finally {
XToolkit.awtUnlock();
}
}
