kAttrWindowDecor
int32 size = node->Contains(kAttrWindowDecor, B_RAW_TYPE);
&& node->Read(kAttrWindowDecor, 0, B_RAW_TYPE, size, buffer)
&& message.FindMessage(kAttrWindowDecor, &decorSettings) == B_OK) {
node->Write(kAttrWindowDecor, 0, B_RAW_TYPE, size, buffer);
message.AddMessage(kAttrWindowDecor, &decorSettings);