fix crash error when operate a closed treebox

2017-07-17 00:37:30 +08:00
parent 87698de126
commit cb6191cc88
2 changed files with 6 additions and 0 deletions
--- a/source/gui/widgets/treebox.cpp
+++ b/source/gui/widgets/treebox.cpp
@@ -1781,6 +1781,11 @@ namespace nana
 					widget.caption("nana treebox");
 				}

+				void trigger::detached()
+				{
+					impl_->data.graph = nullptr;
+				}
+
 				void trigger::refresh(graph_reference)
 				{
 					//Don't reset the scroll and update the window