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49739f5)
}
if(value_desc.get_value_type()==ValueBase::TYPE_CANVAS)
{
}
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
sigc::mem_fun(
this,
&LayerParamTreeStore::changed