diff -r 3fc8dfeb6ebe -r b99e7fd55fd3 src/eric7/EricWidgets/EricMainWindow.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/eric7/EricWidgets/EricMainWindow.py Thu Jul 07 11:23:56 2022 +0200
@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2012 - 2022 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a main window class with styling support.
+"""
+
+from PyQt6.QtWidgets import QMainWindow, QStyleFactory, QApplication
+
+from .EricApplication import ericApp
+
+
+class EricMainWindow(QMainWindow):
+ """
+ Class implementing a main window with styling support.
+ """
+ def __init__(self, parent=None):
+ """
+ Constructor
+
+ @param parent reference to the parent widget
+ @type QWidget
+ """
+ super().__init__(parent)
+
+ self.defaultStyleName = QApplication.style().objectName()
+
+ def setStyle(self, styleName, styleSheetFile):
+ """
+ Public method to set the style of the interface.
+
+ @param styleName name of the style to set
+ @type str
+ @param styleSheetFile name of a style sheet file to read to overwrite
+ defaults of the given style
+ @type str
+ """
+ # step 1: set the style
+ style = None
+ if styleName != "System" and styleName in QStyleFactory.keys():
+ # __IGNORE_WARNING_Y118__
+ style = QStyleFactory.create(styleName)
+ if style is None:
+ style = QStyleFactory.create(self.defaultStyleName)
+ if style is not None:
+ QApplication.setStyle(style)
+
+ # step 2: set a style sheet
+ ericApp().setStyleSheetFile(styleSheetFile)
