2 files changed, 12 insertions, 0 deletions
diff --git a/src/nativewindow/classes/com/sun/nativewindow/impl/NullWindow.java b/src/nativewindow/classes/com/sun/nativewindow/impl/NullWindow.java
index c7d2acec0..48a04a3c9 100644
--- a/src/nativewindow/classes/com/sun/nativewindow/impl/NullWindow.java
+++ b/src/nativewindow/classes/com/sun/nativewindow/impl/NullWindow.java
@@ -88,6 +88,12 @@ public class NullWindow implements NativeWindow {
     return lockedStack;
   }
 
+  public boolean surfaceSwap() {
+    return false;
+  }
+
+  public void surfaceUpdated() { }
+
   public long getDisplayHandle() {
     return displayHandle;
   }
diff --git a/src/nativewindow/classes/com/sun/nativewindow/impl/jawt/JAWTWindow.java b/src/nativewindow/classes/com/sun/nativewindow/impl/jawt/JAWTWindow.java
index a4a529c54..5ad2804c1 100644
--- a/src/nativewindow/classes/com/sun/nativewindow/impl/jawt/JAWTWindow.java
+++ b/src/nativewindow/classes/com/sun/nativewindow/impl/jawt/JAWTWindow.java
@@ -115,6 +115,12 @@ public abstract class JAWTWindow implements NativeWindow {
     return lockedStack;
   }
 
+  public boolean surfaceSwap() {
+    return false;
+  }
+
+  public void surfaceUpdated() { }
+
   public long getDisplayHandle() {
     return config.getScreen().getDevice().getHandle();
   }