diff --git a/src/plasma/corona.h b/src/plasma/corona.h
--- a/src/plasma/corona.h
+++ b/src/plasma/corona.h
@@ -218,6 +218,14 @@
      */
     virtual int screenForContainment(const Containment *containment) const;
 
+    /**
+     * @return the id of the screen for a specified name
+     * -1 is returned there if there is no such screen.
+     * @since 5.40
+     */
+    virtual int screenIdForName(const QString &name) const;
+
+
 public Q_SLOTS:
     /**
      * Load applet layout from a config file. The results will be added to the
diff --git a/src/plasma/corona.cpp b/src/plasma/corona.cpp
--- a/src/plasma/corona.cpp
+++ b/src/plasma/corona.cpp
@@ -267,6 +267,11 @@
     return -1;
 }
 
+int Corona::screenIdForName(const QString &name) const
+{
+    return -1;
+}
+
 int Corona::numScreens() const
 {
     return 1;