diff --git a/demo.go b/demo.go
index 3a789b3..a9c0761 100644
--- a/demo.go
+++ b/demo.go
@@ -38,3 +38,10 @@ func SetupDemoUI() {
 
 	demowin.Show()
 }
+
+func CloseDemoUI() {
+	if demowin != nil {
+		demowin.Destroy()
+	}
+	demowin = nil
+}