1 files changed, 12 insertions, 0 deletions
diff --git a/gui/gui_common.py b/gui/gui_common.py
new file mode 100644
index 0000000..39bb38c
--- /dev/null
+++ b/gui/gui_common.py
@@ -0,0 +1,12 @@
+from typing import cast
+from PySide6.QtGui import QFont
+from PySide6.QtWidgets import QApplication
+
+
+def ensure_qt_app() -> QApplication:
+    app = QApplication.instance()
+    if app is None:
+        app = QApplication([])
+    app = cast(QApplication, app)
+    app.setFont(QFont("Calibri", 12))
+    return app