printf("MHPPlane_setOpacity %d\n", opacity);
void Java_vdr_mhp_awt_DFBWindowPeer_setOpacity(JNIEnv* env, jobject obj, jlong nativeData, jint opacity) {   printf("MHPPlane_setOpacity %d\n", opacity);   try {      ((IDirectFBWindow *)nativeData)->SetOpacity(opacity);   } catch (DFBException *e) {      printf("DirectFB: Error %s, %s\n", e->GetAction(), e->GetResult());      delete e;      return;   }}