X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fview%2Fheader.cpp;h=81973802b6cb1844eca489000aaa0ef3d7f18600;hb=f052f9cde47e2c4ab8fd189eb2dc4e85adaf491d;hp=41dffca1f92323c9ece2090893aea04e90afd30f;hpb=786b76785856c6cf8f5916c0b8d76a61695762f9;p=pulseview.git

diff --git a/pv/view/header.cpp b/pv/view/header.cpp
index 41dffca..8197380 100644
--- a/pv/view/header.cpp
+++ b/pv/view/header.cpp
@@ -314,8 +314,10 @@ void Header::on_group()
 			return a->visual_v_offset() < b->visual_v_offset(); });
 
 	shared_ptr<TraceGroup> group(new TraceGroup());
+	shared_ptr<RowItem> mouse_down_item(
+		std::dynamic_pointer_cast<RowItem>(mouse_down_item_));
 	shared_ptr<RowItem> focus_item(
-		mouse_down_item_ ? mouse_down_item_ : selected_items.front());
+		mouse_down_item ? mouse_down_item : selected_items.front());
 
 	assert(focus_item);
 	assert(focus_item->owner());