diff -r 0f42346c8fc7 -r a45d1cac365e src/RelpipeChartMainWindow.cpp
--- a/src/RelpipeChartMainWindow.cpp	Fri Sep 28 12:51:55 2018 +0200
+++ b/src/RelpipeChartMainWindow.cpp	Fri Sep 28 13:23:21 2018 +0200
@@ -1,7 +1,28 @@
+#include <QTabWidget>
+#include <QPushButton>
+#include <QLabel>
+#include <QStatusBar>
+#include <QSplitter>
+
 #include "RelpipeChartMainWindow.h"
 
 RelpipeChartMainWindow::RelpipeChartMainWindow() {
 	widget.setupUi(this);
+
+	QTabWidget* tabs = new QTabWidget(this);
+
+	for (int i = 0; i < 5; i++) {
+		QSplitter* splitter = new QSplitter(Qt::Orientation::Vertical, tabs);
+		splitter->addWidget(new QPushButton("here will be the chart", splitter));
+		splitter->addWidget(new QPushButton("here will be the table", splitter));
+		tabs->addTab(splitter, "relation_name");
+	}
+
+	//statusBar()->addWidget(new QPushButton("xxx", widget.statusbar));
+	statusBar()->addWidget(new QLabel("Loading relations...", widget.statusbar));
+
+	setCentralWidget(tabs);
+
 }
 
 RelpipeChartMainWindow::~RelpipeChartMainWindow() {