diff --git a/cd_utils/cdutils_c.cpp b/cd_utils/cdutils_c.cpp
index 3770e43..951b3ee 100644
--- a/cd_utils/cdutils_c.cpp
+++ b/cd_utils/cdutils_c.cpp
@@ -7,20 +7,6 @@ CInterface C;
 
 
 CInterface::CInterface(): Interface(CDType::cdC) {
-	CONNECTU(core, C_Sended, this, sended);
-	CONNECTU(core, C_SendFail, this, sendFailed);
-	CONNECTU(core, C_Received, this, received);
-	CONNECTU(core, C_ReceiveFail, this, receiveFailed);
-}
-
-
-void CInterface::send() {
-	core->C_Send();
-}
-
-
-void CInterface::request() {
-	core->C_Request();
 }
 
 
diff --git a/cd_utils/cdutils_c.h b/cd_utils/cdutils_c.h
index e09b89d..72590ca 100644
--- a/cd_utils/cdutils_c.h
+++ b/cd_utils/cdutils_c.h
@@ -9,18 +9,10 @@ namespace CDUtils {
 
 class CInterface: public Interface
 {
-	PIOBJECT(CDUtils::CInterface)
+	PIOBJECT_SUBCLASS(CInterface, Interface)
 public:
 	CInterface();
 
-	EVENT(sended)
-	EVENT(sendFailed)
-	EVENT(received)
-	EVENT(receiveFailed)
-	EVENT1(keepNamesRequest, bool*, cn)
-	EVENT_HANDLER(void, send);
-	EVENT_HANDLER(void, request);
-
 	void sendCommand(const CDType & c);
 	void connect(const CDType & c, PIObject * o, Handler eh);
 	void autoConnect(PIObject * o, const PIString & prefix = PIStringAscii("c_"));
diff --git a/cd_utils/cdutils_core.cpp b/cd_utils/cdutils_core.cpp
index 01e0f61..9e9f644 100644
--- a/cd_utils/cdutils_core.cpp
+++ b/cd_utils/cdutils_core.cpp
@@ -106,6 +106,8 @@ void CDCore::cd_write(CDSection * cd, PIIODevice * d) {
 void CDCore::cd_read(CDSection * cd, PIIODevice * d) {
 	PIConfig conf(d, PIIODevice::ReadOnly);
 	cd->read(&(conf.rootEntry()));
+	if (cd->cd_type_ == CDType::cdX)
+		x_selected = cd->collectX();
 	initRoot(cd);
 	K_ChangedGlobal();
 	/*PIVector<PIIODevice * > ds = connection.allDevices();
@@ -147,6 +149,7 @@ void CDCore::cd_calculate(CDSection * cd) {
 
 
 void CDCore::cd_send(CDSection * cd, CDPacketType pt, bool direct) {
+	if (!cd) return;
 	PIByteArray ba, sba;
 	PIIOByteArray iob(&ba, PIIODevice::ReadWrite);
 	cd_write(cd, &iob);
@@ -160,6 +163,33 @@ void CDCore::cd_send(CDSection * cd, CDPacketType pt, bool direct) {
 }
 
 
+void CDCore::send(CDType::cdT cdt) {
+	CDPacketType pt = CD_Ping;
+	switch (cdt) {
+	case CDType::cdK: pt = CD_KSend; break;
+	case CDType::cdX: pt = CD_XSend; break;
+	case CDType::cdC: pt = CD_CSend; break;
+	default: break;
+	}
+	piCoutObj << "send" << typeLetter(cdt);
+	cd_send(root(cdt), pt);
+}
+
+
+void CDCore::request(CDType::cdT cdt) {
+	CDPacketType pt = CD_Ping;
+	switch (cdt) {
+	case CDType::cdK: pt = CD_KQuery; break;
+	case CDType::cdX: pt = CD_XQuery; break;
+	case CDType::cdC: pt = CD_CQuery; break;
+	default: break;
+	}
+	piCoutObj << "request" << typeLetter(cdt);
+	PIByteArray sba = makeHeader(pt, 0);
+	sendThreaded(sba);
+}
+
+
 void CDCore::initApp() {
 	init(appConfig(), false);
 }
@@ -243,19 +273,6 @@ CDCore * CDCore::instance() {
 }
 
 
-void CDCore::K_Send() {
-	piCoutObj << "K_Send";
-	cd_send(&k_, CD_KSend);
-}
-
-
-void CDCore::K_Request() {
-	piCoutObj << "K_Request";
-	PIByteArray sba = makeHeader(CD_KQuery, 0);
-	sendThreaded(sba);
-}
-
-
 void CDUtils::CDCore::K_DirectChange(PIDeque<int> path, PIString value) {
 	piCoutObj << "K_DirectChange";
 	PacketKDirectChange p;
@@ -267,32 +284,6 @@ void CDUtils::CDCore::K_DirectChange(PIDeque<int> path, PIString value) {
 }
 
 
-void CDCore::X_Send() {
-	piCoutObj << "X_Send";
-	cd_send(&x_, CD_XSend);
-}
-
-
-void CDCore::X_Request() {
-	piCoutObj << "X_Request";
-	PIByteArray sba = makeHeader(CD_XQuery, 0);
-	sendThreaded(sba);
-}
-
-
-void CDCore::C_Send() {
-	piCoutObj << "C_Send";
-	cd_send(&c_, CD_CSend);
-}
-
-
-void CDCore::C_Request() {
-	piCoutObj << "C_Request";
-	PIByteArray sba = makeHeader(CD_CQuery, 0);
-	sendThreaded(sba);
-}
-
-
 void CDCore::sendThread() {
 	if (send_data.size_s() < 4) return;
 	PacketHeader h;
@@ -392,7 +383,7 @@ void CDCore::procReceivedPacket(PIByteArray & ba) {
 		//piCoutObj << "ping";
 		break;
 	case CD_KQuery:
-		K_Send();
+		send(CDType::cdK);
 		break;
 	case CD_KSend: {
 		piCoutObj << "K received";
@@ -410,7 +401,7 @@ void CDCore::procReceivedPacket(PIByteArray & ba) {
 		k_[p.path].setValue(p.value);
 		} break;
 	case CD_XQuery:
-		X_Send();
+		send(CDType::cdX);
 		break;
 	case CD_XSend: {
 		piCoutObj << "X received";
@@ -420,6 +411,7 @@ void CDCore::procReceivedPacket(PIByteArray & ba) {
 		PIString s = PIString::fromUTF8((const char *)x.data());
 		PIIOString ios(&s);
 		cd_read(&x_, &ios);
+		x_selected = x_.collectX();
 		X_Received();
 		} break;
 	case CD_XRequest: {
@@ -447,7 +439,7 @@ void CDCore::procReceivedPacket(PIByteArray & ba) {
 		X_ReceivedX(x_vals);
 		} break;
 	case CD_CQuery:
-		C_Send();
+		send(CDType::cdC);
 		break;
 	case CD_CSend: {
 		piCoutObj << "C received";
diff --git a/cd_utils/cdutils_core.h b/cd_utils/cdutils_core.h
index 4a6cccd..3fe45d6 100644
--- a/cd_utils/cdutils_core.h
+++ b/cd_utils/cdutils_core.h
@@ -36,24 +36,20 @@ public:
 	EVENT(K_Received)
 	EVENT(K_ReceiveFail)
 	EVENT(K_ChangedGlobal)
-	EVENT_HANDLER(void, K_Send);
-	EVENT_HANDLER(void, K_Request);
 	EVENT_HANDLER2(void, K_DirectChange, PIDeque<int>, path, PIString, value);
 
 	EVENT(X_Sended)
 	EVENT(X_SendFail)
 	EVENT(X_Received)
 	EVENT(X_ReceiveFail)
+	EVENT(X_ChangedGlobal)
 	EVENT1(X_ReceivedX, PIVector<PIDeque<int> >, pathes)
-	EVENT_HANDLER(void, X_Send);
-	EVENT_HANDLER(void, X_Request);
 
 	EVENT(C_Sended)
 	EVENT(C_SendFail)
 	EVENT(C_Received)
 	EVENT(C_ReceiveFail)
-	EVENT_HANDLER(void, C_Send);
-	EVENT_HANDLER(void, C_Request);
+	EVENT(C_ChangedGlobal)
 
 	void cd_write    (CDSection * cd, PIIODevice * d);
 	void cd_read     (CDSection * cd, PIIODevice * d);
@@ -61,6 +57,8 @@ public:
 	void cd_update   (CDSection * cd, PIIODevice * d, UpdateModeFlags mode);
 	void cd_calculate(CDSection * cd);
 	void cd_send     (CDSection * cd, CDPacketType pt, bool direct = false);
+	void send(CDType::cdT cdt);
+	void request(CDType::cdT cdt);
 	void initApp();
 	void initPult();
 	void init(const PIString & configuration, bool pult = false);
diff --git a/cd_utils/cdutils_interface.cpp b/cd_utils/cdutils_interface.cpp
index d836645..f976772 100644
--- a/cd_utils/cdutils_interface.cpp
+++ b/cd_utils/cdutils_interface.cpp
@@ -13,6 +13,27 @@ Interface::Interface(CDType::cdT type_) {
 	//piCoutObj << (void*)this << core;
 	file_ = core->typeLetter(type_) + PIStringAscii(".dat");
 	file_size = 0;
+	switch (type) {
+	case CDType::cdK:
+		CONNECTU(core, K_Sended, this, sended);
+		CONNECTU(core, K_SendFail, this, sendFailed);
+		CONNECTU(core, K_Received, this, received);
+		CONNECTU(core, K_ReceiveFail, this, receiveFailed);
+		break;
+	case CDType::cdX:
+		CONNECTU(core, X_Sended, this, sended);
+		CONNECTU(core, X_SendFail, this, sendFailed);
+		CONNECTU(core, X_Received, this, received);
+		CONNECTU(core, X_ReceiveFail, this, receiveFailed);
+		break;
+	case CDType::cdC:
+		CONNECTU(core, C_Sended, this, sended);
+		CONNECTU(core, C_SendFail, this, sendFailed);
+		CONNECTU(core, C_Received, this, received);
+		CONNECTU(core, C_ReceiveFail, this, receiveFailed);
+		break;
+	default: break;
+	}
 }
 
 
@@ -164,3 +185,13 @@ void Interface::writeFile() {
 bool Interface::inProgress() {
 	return core->inProgress();
 }
+
+
+void Interface::send() {
+	core->send(type);
+}
+
+
+void Interface::request() {
+	core->request(type);
+}
diff --git a/cd_utils/cdutils_interface.h b/cd_utils/cdutils_interface.h
index ded7fc1..0ad710a 100644
--- a/cd_utils/cdutils_interface.h
+++ b/cd_utils/cdutils_interface.h
@@ -50,6 +50,14 @@ public:
 	void writeFile();
 	bool inProgress();
 
+	EVENT(sended)
+	EVENT(sendFailed)
+	EVENT(received)
+	EVENT(receiveFailed)
+	EVENT(changedGlobal)
+	EVENT_HANDLER(void, send);
+	EVENT_HANDLER(void, request);
+
 protected:
 	CDCore * core;
 	CDSection * s;
diff --git a/cd_utils/cdutils_k.cpp b/cd_utils/cdutils_k.cpp
index b833a0e..76038d0 100644
--- a/cd_utils/cdutils_k.cpp
+++ b/cd_utils/cdutils_k.cpp
@@ -7,20 +7,6 @@ KInterface K;
 
 
 KInterface::KInterface(): Interface(CDType::cdK) {
-	CONNECTU(core, K_Sended, this, sended);
-	CONNECTU(core, K_SendFail, this, sendFailed);
-	CONNECTU(core, K_Received, this, received);
-	CONNECTU(core, K_ReceiveFail, this, receiveFailed);
-}
-
-
-void KInterface::send() {
-	core->K_Send();
-}
-
-
-void KInterface::request() {
-	core->K_Request();
 }
 
 
diff --git a/cd_utils/cdutils_k.h b/cd_utils/cdutils_k.h
index 137f932..5374a41 100644
--- a/cd_utils/cdutils_k.h
+++ b/cd_utils/cdutils_k.h
@@ -9,17 +9,11 @@ namespace CDUtils {
 
 class KInterface: public Interface
 {
-	PIOBJECT(CDUtils::KInterface)
+	PIOBJECT_SUBCLASS(KInterface, Interface)
 public:
 	KInterface();
 
-	EVENT(sended)
-	EVENT(sendFailed)
-	EVENT(received)
-	EVENT(receiveFailed)
 	EVENT1(keepNamesRequest, bool*, kn)
-	EVENT_HANDLER(void, send);
-	EVENT_HANDLER(void, request);
 
 	void directChange(const CDType & k, double v);
 
diff --git a/cd_utils/cdutils_types.cpp b/cd_utils/cdutils_types.cpp
index 1f60a51..b491881 100644
--- a/cd_utils/cdutils_types.cpp
+++ b/cd_utils/cdutils_types.cpp
@@ -440,6 +440,8 @@ void CDSection::write(PIIODevice * d, const PIString & prefix) {
 			d->write(l.toUTF8());
 			l.clear(); l << ck.index() << ".avg = " << ck.avg() << " #n " << "\n";
 			d->write(l.toUTF8());
+			l.clear(); l << ck.index() << ".sel = " << (ck.isSelectedX() ? "1" : "0") << " #n " << "\n";
+			d->write(l.toUTF8());
 			break;
 		case CDType::cdC:
 			l.clear(); l << ck.index() << ".name = " << ck.name() << " #s " << ck.comment() << " \n";
@@ -495,6 +497,7 @@ void CDSection::read(const void * ep) {
 				c = CDType(id, e->getValue("name").value(), PIString(), PIString(), PIString() , e->getValue("name").comment(), cd_type_);
 				c.setXMode((CDType::XMode)e->getValue("mode", int(CDType::X_Current)).value().toInt());
 				c.setAvg((CDType::XMode)e->getValue("avg", 1).value().toInt());
+				c.x_enabled = e->getValue("sel", false).value().toBool();
 				break;
 			case CDType::cdC:
 				c = CDType(id, e->getValue("name").value(), PIString(), PIString(), PIString() , e->getValue("name").comment(), cd_type_);
diff --git a/cd_utils/cdutils_x.cpp b/cd_utils/cdutils_x.cpp
index 03d063c..2b2d24a 100644
--- a/cd_utils/cdutils_x.cpp
+++ b/cd_utils/cdutils_x.cpp
@@ -7,24 +7,10 @@ XInterface X;
 
 
 XInterface::XInterface(): Interface(CDType::cdX) {
-	CONNECTU(core, X_Sended, this, sended);
-	CONNECTU(core, X_SendFail, this, sendFailed);
-	CONNECTU(core, X_Received, this, received);
-	CONNECTU(core, X_ReceiveFail, this, receiveFailed);
 	CONNECTU(core, X_ReceivedX, this, receivedX);
 }
 
 
-void XInterface::send() {
-	core->X_Send();
-}
-
-
-void XInterface::request() {
-	core->X_Request();
-}
-
-
 void XInterface::setEnabled(const CDType & x, bool en) {
 	core->x_mutex.lock();
 	CDType & t((*s)[x.path()]);
diff --git a/cd_utils/cdutils_x.h b/cd_utils/cdutils_x.h
index cff188a..bbfc56a 100644
--- a/cd_utils/cdutils_x.h
+++ b/cd_utils/cdutils_x.h
@@ -9,17 +9,11 @@ namespace CDUtils {
 
 class XInterface: public Interface
 {
-	PIOBJECT(CDUtils::XInterface)
+	PIOBJECT_SUBCLASS(XInterface, Interface)
 public:
 	XInterface();
 
-	EVENT(sended)
-	EVENT(sendFailed)
-	EVENT(received)
-	EVENT(receiveFailed)
 	EVENT1(keepNamesRequest, bool*, xn)
-	EVENT_HANDLER(void, send);
-	EVENT_HANDLER(void, request);
 	EVENT1(receivedX, PIVector<PIDeque<int> >, pathes)
 
 	void enable(const CDType & x) {setEnabled(x, true);}
diff --git a/qad/utils/qpiconfig.h b/qad/utils/qpiconfig.h
index d7dd7fd..1c8a267 100644
--- a/qad/utils/qpiconfig.h
+++ b/qad/utils/qpiconfig.h
@@ -13,7 +13,7 @@
 #include <cmath>
 
 
-inline QByteArray QString2QByteArray(const QString & string) {return qUncompress(QByteArray::fromBase64(string.toLatin1()));}
+inline QByteArray QString2QByteArray(const QString & string) {return string.isEmpty() ? QByteArray() : qUncompress(QByteArray::fromBase64(string.toLatin1()));}
 int QString2int(const QString & string);
 inline QColor QString2QColor(const QString & string) {return (string.left(1) == "#" ? QColor(string.right(string.length() - 1).toInt(0, 16)) : QColor(QString2int(string)));}
 QRect QString2QRect(const QString & string);
@@ -24,7 +24,7 @@ QPointF QString2QPointF(const QString & string);
 inline QString QColor2QString(const QColor & color) {QString s = color.name(); return "0x" + QString::number(color.alpha(), 16).rightJustified(2, '0') + s.right(s.length() - 1);}
 inline QString QPoint2QString(const QPoint & point) {return QString::number(point.x()) + ";" + QString::number(point.y());}
 inline QString QPointF2QString(const QPointF & point) {return QString::number(point.x()) + ";" + QString::number(point.y());}
-inline QString QByteArray2QString(const QByteArray & array) {return QString(qCompress(array, 9).toBase64());}
+inline QString QByteArray2QString(const QByteArray & array) {return array.isEmpty() ? QString() : QString(qCompress(array, 9).toBase64());}
 QString QRect2QString(const QRect & rect);
 QString QRectF2QString(const QRectF & rect);