diff --git a/plugins/qpa/nativeinterface.h b/plugins/qpa/nativeinterface.h
--- a/plugins/qpa/nativeinterface.h
+++ b/plugins/qpa/nativeinterface.h
@@ -35,6 +35,7 @@
     explicit NativeInterface(Integration *integration);
     void *nativeResourceForIntegration(const QByteArray &resource) override;
     void *nativeResourceForWindow(const QByteArray &resourceString, QWindow *window) override;
+    QFunctionPointer platformFunction(const QByteArray &function) const override;
 
 private:
     Integration *m_integration;
diff --git a/plugins/qpa/nativeinterface.cpp b/plugins/qpa/nativeinterface.cpp
--- a/plugins/qpa/nativeinterface.cpp
+++ b/plugins/qpa/nativeinterface.cpp
@@ -79,5 +79,26 @@
     return nullptr;
 }
 
+static void roundtrip()
+{
+    if (!waylandServer()) {
+        return;
+    }
+    auto c = waylandServer()->internalClientConection();
+    if (!c) {
+        return;
+    }
+    c->flush();
+    waylandServer()->dispatch();
+}
+
+QFunctionPointer NativeInterface::platformFunction(const QByteArray &function) const
+{
+    if (qstrcmp(function.toLower(), "roundtrip") == 0) {
+        return &roundtrip;
+    }
+    return nullptr;
+}
+
 }
 }