diff --git a/qad/widgets/session_manager.cpp b/qad/widgets/session_manager.cpp
index b46a67d..8f53ab2 100644
--- a/qad/widgets/session_manager.cpp
+++ b/qad/widgets/session_manager.cpp
@@ -1,9 +1,14 @@
 #include <QApplication>
 #include <QFileInfo>
+#include <QMetaMethod>
 #include "session_manager.h"
 
 
 void SessionManager::setFile(const QString & file) {
+	if (file.isEmpty()) {
+		file_.clear();
+		return;
+	}
 	QFileInfo fi(file);
 	if (fi.isAbsolute()) {
 		file_ = file;
@@ -26,7 +31,9 @@ void SessionManager::removeMainWidget(QWidget * e) {
 void SessionManager::save() {
 	if (file_.isEmpty()) return;
 	QPIConfig sr(file_);
+	QObjectList tsc;
 	for (int i = 0; i < mwindows.size(); ++i) {
+		tsc << mwindows[i].second;
 		sr.setValue(mwindows[i].first + " state", mwindows[i].second->saveState(), false);
 		sr.setValue(mwindows[i].first + " window state", (int)mwindows[i].second->windowState(), false);
 		sr.setValue(mwindows[i].first + " geometry " + QString::number((int)mwindows[i].second->windowState()), mwindows[i].second->saveGeometry(), false);
@@ -35,6 +42,7 @@ void SessionManager::save() {
 			sr.setValue(mwindows[i].first + " splitter " + s->objectName(), s->saveState(), false);
 	}
 	for (int i = 0; i < widgets.size(); ++i) {
+		tsc << widgets[i].second;
 		sr.setValue(widgets[i].first + " geometry " + QString::number((int)widgets[i].second->windowState()), widgets[i].second->saveGeometry(), false);
 		sr.setValue(widgets[i].first + " window state", (int)widgets[i].second->windowState(), false);
 	}
@@ -70,6 +78,22 @@ void SessionManager::save() {
 		sr.setValue(ints[i].first, *ints[i].second, false);
 	for (int i = 0; i < floats.size(); ++i)
 		sr.setValue(floats[i].first, *floats[i].second, false);
+	QSet<QObject*> all_list;
+	foreach (QObject * c, tsc) {
+		all_list |= QSet<QObject*>::fromList(c->findChildren<QObject*>());
+	}
+	QMap<const QMetaObject*, QByteArray> funcs = metaFunctions(all_list, "sessionSave");
+	//qDebug() << "check for save" << all_list.size();
+	foreach (QObject * o, all_list) {
+		const QMetaObject * mo = o->metaObject();
+		QByteArray fn = funcs.value(mo);
+		if (!mo || fn.isEmpty()) continue;
+		QByteArray value;
+		//qDebug() << "save" << o->objectName();
+		mo->invokeMethod(o, fn.constData(), Q_ARG(QByteArray*, &value));
+		sr.setValue(o->objectName(), value, false);
+	}
+	//qDebug() << mcl.size();
 	sr.writeAll();
 	emit saving(sr);
 }
@@ -78,7 +102,9 @@ void SessionManager::save() {
 void SessionManager::load(bool onlyMainwindow) {
 	if (file_.isEmpty()) return;
 	QPIConfig sr(file_);
+	QObjectList tsc;
 	for (int i = 0; i < mwindows.size(); ++i) {
+		tsc << mwindows[i].second;
 		mwindows[i].second->restoreState(sr.getValue(mwindows[i].first + " state", QByteArray()));
 		mwindows[i].second->restoreGeometry(sr.getValue(mwindows[i].first + " geometry " + QString::number((int)mwindows[i].second->windowState()), QByteArray()));
 		mwindows[i].second->setWindowState((Qt::WindowState)(int)sr.getValue(mwindows[i].first + " window state", 0));
@@ -87,6 +113,7 @@ void SessionManager::load(bool onlyMainwindow) {
 			s->restoreState(sr.getValue(mwindows[i].first + " splitter " + s->objectName(), QByteArray()));
 	}
 	for (int i = 0; i < widgets.size(); ++i) {
+		tsc << widgets[i].second;
 		widgets[i].second->restoreGeometry(sr.getValue(widgets[i].first + " geometry " + QString::number((int)widgets[i].second->windowState()), QByteArray()));
 		widgets[i].second->setWindowState((Qt::WindowState)(int)sr.getValue(widgets[i].first + " window state", 0));
 	}
@@ -131,11 +158,25 @@ void SessionManager::load(bool onlyMainwindow) {
 		*ints[i].second = sr.getValue(ints[i].first, *ints[i].second);
 	for (int i = 0; i < floats.size(); ++i)
 		*floats[i].second = sr.getValue(floats[i].first, *floats[i].second);
+	QSet<QObject*> all_list;
+	foreach (QObject * c, tsc) {
+		all_list |= QSet<QObject*>::fromList(c->findChildren<QObject*>());
+	}
+	QMap<const QMetaObject*, QByteArray> funcs = metaFunctions(all_list, "sessionLoad");
+	//qDebug() << "check for load" << all_list.size();
+	foreach (QObject * o, all_list) {
+		const QMetaObject * mo = o->metaObject();
+		QByteArray fn = funcs.value(mo);
+		if (!mo || fn.isEmpty()) continue;
+		QByteArray value = sr.getValue(o->objectName(), QByteArray());
+		//qDebug() << "load" << o->objectName();
+		mo->invokeMethod(o, fn.constData(), Q_ARG(QByteArray*, &value));
+	}
 	emit loading(sr);
 }
 
 
-void SessionManager::clear() {
+void SessionManager::clear(bool with_filename) {
 	mwindows.clear();
 	widgets.clear();
 	checks.clear();
@@ -154,4 +195,29 @@ void SessionManager::clear() {
 	bools.clear();
 	ints.clear();
 	floats.clear();
+	if (with_filename) setFile("");
+}
+
+
+QMap<const QMetaObject *, QByteArray> SessionManager::metaFunctions(const QSet<QObject *> & objects, QByteArray fname) {
+	QMap<const QMetaObject*, QByteArray> funcs;
+	foreach (QObject * o, objects) {
+		const QMetaObject * mo = o->metaObject();
+		if (!mo) continue;
+		QByteArray fn;
+		if (!funcs.contains(mo)) {
+			for (int i = 0; i < mo->methodCount(); ++i) {
+				QMetaMethod mm = mo->method(i);
+				if (mm.name() == fname) {
+					if (mm.parameterTypes().size() > 0) {
+						if (mm.parameterTypes()[0] == "QByteArray*") {
+							fn = mm.name();
+						}
+					}
+				}
+			}
+			funcs[mo] = fn;
+		} else fn = funcs[mo];
+	}
+	return funcs;
 }
diff --git a/qad/widgets/session_manager.h b/qad/widgets/session_manager.h
index 5251d89..107109c 100644
--- a/qad/widgets/session_manager.h
+++ b/qad/widgets/session_manager.h
@@ -15,6 +15,12 @@
 #include "spinslider.h"
 #include "qpiconfig.h"
 
+/// for all children widgets of "QMainWindow"s and MainWidgets
+/// check for slots
+/// * void sessionSave(QByteArray * data);
+/// * void sessionLoad(QByteArray * data);
+
+
 class SessionManager: public QObject
 {
 	Q_OBJECT
@@ -59,9 +65,11 @@ public:
 
 	void save();
 	void load(bool onlyMainwindow = false);
-	void clear();
+	void clear(bool with_filename = true);
 
 private:
+	QMap<const QMetaObject*, QByteArray> metaFunctions(const QSet<QObject*> & objects, QByteArray fname);
+
 	QVector<QPair<QString, QMainWindow * > > mwindows;
 	QVector<QPair<QString, QWidget * > > widgets;
 	QVector<QPair<QString, QCheckBox * > > checks;