rebased with master

Author: sergey-yaroslavtsev

src/PyMca5/PyMcaGui/pymca/PyMcaMain.py

@@ -187,14 +187,11 @@
 if __name__ == "__main__":
     sys.excepthook = qt.exceptionHandler
 
-    # To avoid "Dark mode"; this force main windows to be light (but not all submenus)
     if sys.platform == 'win32':
+        # To avoid "Dark mode"; this force main windows to be light (but not all submenus)
         _ = os.environ.setdefault("QT_QPA_PLATFORM", "windows:darkmode=0")
-    
-
-    # minimal fix matplotlib fonts when Windows scale (DPI) is not 100%
-    if sys.platform == 'win32':
-        os.environ["QT_ENABLE_HIGHDPI_SCALING"] = "0"
+        # minimal fix for matplotlib fonts when Windows scale (DPI) is not 100%
+        _ = os.environ["QT_ENABLE_HIGHDPI_SCALING"] = "0"
 
     app = qt.QApplication(sys.argv)