update

example/qml/component/CustomWindow.qml

@@ -12,6 +12,10 @@ FluWindow {
     property bool appBarVisible: true
     default property alias content: container.data
 
+    Component.onCompleted: {
+        console.debug(FramelessUtils.frameBorderVisible)
+    }
+
     FluAppBar {
         id: title_bar
         title: window.title

example/src/main.cpp

@@ -21,6 +21,7 @@ int main(int argc, char *argv[])
     QGuiApplication::setOrganizationDomain("https://zhuzichu520.github.io");
     QGuiApplication::setApplicationName("FluentUI");
     QGuiApplication app(argc, argv);
+    FramelessConfig::instance()->set(Global::Option::ForceHideWindowFrameBorder);
     AppInfo* appInfo = new AppInfo();
     IPC ipc(0);
     QString activeWindowEvent = "activeWindow";