Merge pull request #62 from mentalfl0w/dev

Fix crash in macOS.

example/main.cpp

@@ -13,7 +13,9 @@ int main(int argc, char *argv[])
     //将样式设置为Basic，不然会导致组件显示异常
     qputenv("QT_QUICK_CONTROLS_STYLE","Basic");
     //6.4及以下监听系统深色模式变化
+#ifdef Q_OS_WIN
     qputenv("QT_QPA_PLATFORM","windows:darkmode=2");
+#endif
     QGuiApplication::setOrganizationName("ZhuZiChu");
     QGuiApplication::setOrganizationDomain("https://zhuzichu520.github.io");
     QGuiApplication::setApplicationName("FluentUI");