diff --git a/desktop/sources/scripts/library.js b/desktop/sources/scripts/library.js
index d75b601..b532ec4 100644
--- a/desktop/sources/scripts/library.js
+++ b/desktop/sources/scripts/library.js
@@ -15,8 +15,8 @@ function Library (ronin) {
     return path
   }
 
-  this.draw = (path, rect) => {
-    ronin.surface.draw(path, rect)
+  this.draw = (path, rect, callback) => {
+    ronin.surface.draw(path, rect, callback)
     return rect
   }
 
diff --git a/examples/pixels.lisp b/examples/pixels.lisp
index 91ec4a4..f599c38 100644
--- a/examples/pixels.lisp
+++ b/examples/pixels.lisp
@@ -4,6 +4,7 @@
 
   ; Draw photo 
   
-  (draw "../../PREVIEW.jpg")
-  (echo (select (rect 0 0 10 10)))
-)
\ No newline at end of file
+  (draw "../../PREVIEW.jpg"
+  (frame)
+  (lambda () (echo (select (rect 660 344 10 10))))
+))
\ No newline at end of file