更新代码

ui/styledemo/main.cpp

@@ -5,9 +5,13 @@ int main(int argc, char *argv[])
 {
     //设置不应用操作系统设置比如字体
     QApplication::setDesktopSettingsAware(false);
-#if (QT_VERSION >= QT_VERSION_CHECK(5,14,0))
-    QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Floor);
+#if (QT_VERSION >= QT_VERSION_CHECK(5,0,0))
+    QApplication::setAttribute(Qt::AA_Use96Dpi);
 #endif
+#if (QT_VERSION >= QT_VERSION_CHECK(5,14,0))
+    QApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Floor);
+#endif
+
     QApplication a(argc, argv);
     //a.setFont(QFont("Microsoft Yahei", 9));
     QFont font;