X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-studio%2Ftrunk%2Fsrc%2Fgtkmm%2Flayerparamtreestore.cpp;h=928208c5a99deccce9ae8571987b1d27a07a3df2;hb=abfcd94b0963be5f542e47abfc64a6d9c13ac2f9;hp=8e0739af3d705a7777b6e92cdca549d84ed064f5;hpb=837b63e9fb829d66d43f4f169861f8979f76820d;p=synfig.git

diff --git a/synfig-studio/trunk/src/gtkmm/layerparamtreestore.cpp b/synfig-studio/trunk/src/gtkmm/layerparamtreestore.cpp
index 8e0739a..928208c 100644
--- a/synfig-studio/trunk/src/gtkmm/layerparamtreestore.cpp
+++ b/synfig-studio/trunk/src/gtkmm/layerparamtreestore.cpp
@@ -400,8 +400,9 @@ LayerParamTreeStore::rebuild()
 		}
 		if(value_desc.get_value_type()==ValueBase::TYPE_CANVAS)
 		{
-			changed_connection_list.push_back(
-				value_desc.get_value().get(Canvas::Handle())->signal_changed().connect(
+			Canvas::Handle canvas_handle = value_desc.get_value().get(Canvas::Handle());
+			if(canvas_handle) changed_connection_list.push_back(
+				canvas_handle->signal_changed().connect(
 					sigc::mem_fun(
 						this,
 						&LayerParamTreeStore::changed