diff --git a/src/apprt/gtk-ng/Surface.zig b/src/apprt/gtk-ng/Surface.zig
index 1ee21bbc6..7613abd2d 100644
--- a/src/apprt/gtk-ng/Surface.zig
+++ b/src/apprt/gtk-ng/Surface.zig
@@ -85,10 +85,11 @@ pub fn setClipboardString(
     clipboard_type: apprt.Clipboard,
     confirm: bool,
 ) !void {
-    _ = self;
-    _ = val;
-    _ = clipboard_type;
-    _ = confirm;
+    self.surface.setClipboardString(
+        val,
+        clipboard_type,
+        confirm,
+    );
 }
 
 pub fn defaultTermioEnv(self: *Self) !std.process.EnvMap {
diff --git a/src/apprt/gtk-ng/class/surface.zig b/src/apprt/gtk-ng/class/surface.zig
index 70d769dbc..b27fe1da1 100644
--- a/src/apprt/gtk-ng/class/surface.zig
+++ b/src/apprt/gtk-ng/class/surface.zig
@@ -703,6 +703,20 @@ pub const Surface = extern struct {
         );
     }
 
+    pub fn setClipboardString(
+        self: *Self,
+        val: [:0]const u8,
+        clipboard_type: apprt.Clipboard,
+        confirm: bool,
+    ) void {
+        Clipboard.set(
+            self,
+            val,
+            clipboard_type,
+            confirm,
+        );
+    }
+
     //---------------------------------------------------------------
     // Virtual Methods
 
@@ -1930,6 +1944,22 @@ const Clipboard = struct {
         };
     }
 
+    /// Set the clipboard contents.
+    pub fn set(
+        self: *Surface,
+        val: [:0]const u8,
+        clipboard_type: apprt.Clipboard,
+        confirm: bool,
+    ) void {
+        _ = self;
+        _ = val;
+        _ = clipboard_type;
+        _ = confirm;
+    }
+
+    /// Request data from the clipboard (read the clipboard). This
+    /// completes asynchronously and will call the `completeClipboardRequest`
+    /// core surface API when done.
     pub fn request(
         self: *Surface,
         clipboard_type: apprt.Clipboard,