complete MetaDataTable and MetaDataColumn

python/kontor-gui/gui/main_window.py

@@ -1,4 +1,4 @@
-from PySide6.QtGui import QAction, QIcon
+from PySide6.QtGui import QAction, QIcon, QGuiApplication
 from PySide6.QtWidgets import QWidget, QVBoxLayout, QMenu, QMessageBox, QTabWidget, QTableView, QProgressBar
 from PySide6.QtWidgets import QLabel, QMainWindow
 from sqlalchemy import Engine
@@ -45,6 +45,8 @@ class MainWindow(QMainWindow):
         parent_layout.addWidget(self.tabs)
 
         self.setCentralWidget(self.central_widget)
+        centerPoint = QGuiApplication.screens()[0].geometry().center()
+        self.move(centerPoint - self.frameGeometry().center())
 
     def _create_actions(self):
         self.newAction = QAction("&New", self)