adding projects to project tree works again.

src/application/xqmainwindow.cpp

@@ -15,12 +15,14 @@
 #include <QDebug>
 #include <QFileDialog>
 #include <QMessageBox>
+#include <QPushButton>
 
 #include <xqmainwindow.h>
 #include <xqcommand.h>
 #include <xqexception.h>
 #include <xqitemfactory.h>
 #include <xqnodewriter.h>
+#include <xqquickwidget.h>
 
 
 //! konstruktor.
@@ -91,7 +93,13 @@ void XQMainWindow::initMainWindow()
 
   connect( _tabWidget,    SIGNAL(tabBarClicked(int)),    this, SLOT(onTabClicked(int)) );
 
-
+/*
+  XQQuickWidget* butt = new XQQuickWidget;
+  butt->resize(800,600);
+ butt->setWindowFlags(Qt::Dialog | Qt::WindowStaysOnTopHint);
+  butt->move( 1200,300);
+  butt->show();
+*/
 
   /*
   connect( &_mainModelView, &XQViewModel::itemCreated, this, [=, this](XQItem* item)
@@ -324,15 +332,14 @@ void XQMainWindow::loadDocument( const QString& fileName )
   connect( childModel, SIGNAL(sectionCreated(XQModelSection)), this, SLOT(onSectionCreated(XQModelSection)) );
   connect( childModel, SIGNAL(sectionToggled(XQModelSection)), this, SLOT(onSectionToggled(XQModelSection)) );
 
-
   // Den globalen undo-stack ...
   childModel->setUndoStack(&_undoStack);
 
   // und die TreeView übergeben
   childModel->setTreeTable(childTreeView);
 
-  // create new entry in the left side main tree view
-  //XQItem* newEntry = _mainModelView.createTreeEntry( contentRoot );
+  // neuen eintrag im übsichts-baum erzeugen
+  XQItem* newEntry = _mainModelView.makeTreeItem( contentRoot );
   //_mainTreeView->setCurrentIndex( newEntry->index() );
   //_documentStore.addDocument( fileName, pTitle, newEntry, childModel );