---
 main.cpp       |    3 ++-
 mainwindow.cpp |   21 ++++++---------------
 mainwindow.h   |    2 +-
 3 files changed, 9 insertions(+), 17 deletions(-)

--- a/main.cpp
+++ b/main.cpp
@@ -31,7 +31,8 @@ int main(int argc,char **argv)
     QCoreApplication::setApplicationName("serial-io");	
 	
     MainWindow mainWin;
+    mainWin.show();
 
-	return mainWin.exec();
+	return application.exec();
 }
 
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -57,14 +57,17 @@ MainWindow::MainWindow()
 	// GUI stuff
     createActions();
     
+    QWidget *centralWidget = new QWidget;
     QVBoxLayout *mainLayout = new QVBoxLayout;
+    centralWidget->setLayout(mainLayout);
+    setCentralWidget(centralWidget);
 
     createMenus();
     createToolBars();
     createStatusBar();
 
-	mainLayout->addWidget(menuBar);
-	mainLayout->addWidget(fileToolBar);
+	setMenuBar(menuBar);
+	addToolBar(fileToolBar);
 
 	createTypeBox();
 	mainLayout->addWidget(horizontalGroupBox);
@@ -204,22 +207,10 @@ MainWindow::MainWindow()
 
 	/****/
 
-	mainLayout->addWidget(statusBar);
+	setStatusBar(statusBar);
 
-	setLayout(mainLayout);	
-	
     setWindowTitle(tr("Serial I/O Manager"));
     
-	Qt::WindowFlags flags;
-	
-	flags = this->windowFlags();
-	
-	flags |= Qt::WindowMinMaxButtonsHint;  
-    
-    flags = flags & (!Qt::WindowContextHelpButtonHint);
-    
-    setWindowFlags(flags);
-    
     viewTools();
     viewSendType();
     viewWidth();
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -59,7 +59,7 @@ class QDomDocument;
   The class show the pulldown menu, toolbar, options, transceiver window and a tabbar
   for the comandline, send buffer and events.
 */
-class MainWindow : public QDialog
+class MainWindow : public QMainWindow
 {
     Q_OBJECT