+ /**
+ * Determine the system icon theme set when Quassel was started.
+ *
+ * This property stores the icon theme initially configured in Qt when starting up (may be empty on platforms
+ * not supporting system icon themes). If the --icontheme option is given, uses that.
+ *
+ * Since Qt does not support notifications on theme changes, this property will not be updated when the theme
+ * changes at runtime.
+ *
+ * @returns The system icon theme at startup time
+ */
+ QString systemIconTheme() const;
+