Add destrpy() method.
diff --git a/Lib/lib-stdwin/StripChart.py b/Lib/lib-stdwin/StripChart.py
index ac767c3..e97dae2 100644
--- a/Lib/lib-stdwin/StripChart.py
+++ b/Lib/lib-stdwin/StripChart.py
@@ -18,6 +18,9 @@
 		self.resetbounds()
 		return self
 	#
+	def destroy(self):
+		self.parent = 0
+	#
 	def setbounds(self, bounds):
 		LabelAppearance.setbounds(self, bounds)
 		self.resetbounds()
diff --git a/Lib/stdwin/StripChart.py b/Lib/stdwin/StripChart.py
index ac767c3..e97dae2 100755
--- a/Lib/stdwin/StripChart.py
+++ b/Lib/stdwin/StripChart.py
@@ -18,6 +18,9 @@
 		self.resetbounds()
 		return self
 	#
+	def destroy(self):
+		self.parent = 0
+	#
 	def setbounds(self, bounds):
 		LabelAppearance.setbounds(self, bounds)
 		self.resetbounds()