QWebEngineScript script;script.setName("MyUserScript");script.setInjectionPoint(QWebEngineScript::DocumentReady);script.setRunsOnSubFrames(true);// Optional: also inject into iframesscript.setWorldId(QWebEngineScript::MainWorld);// or UserWorld for isolationQString jsCode =R"(    // Your JavaScript code here    alert('Hello from injected script!');)";script.setSourceCode(jsCode);

QWebEngineProfile *profile = QWebEngineProfile::defaultProfile();QWebEngineScriptCollection &scripts = profile->scripts();scripts.insert(script);

QWebEngineView *view =new QWebEngineView;view->setPage(new QWebEnginePage(profile, view));// optional if you added the script to profileview->load(QUrl("https://example.com"));view->show();