BrightIdeasSoftware.ObjectListView.HandleLButtonUp C# (CSharp) Method

        protected virtual bool HandleLButtonUp(ref Message m)
        {
            if (this.MouseMoveHitTest == null)
                return false;

            // Are they trying to expand/collapse a group?
            if (this.MouseMoveHitTest.HitTestLocation == HitTestLocation.GroupExpander) {
                if (this.TriggerGroupExpandCollapse(this.MouseMoveHitTest.Group))
                    return true;
            }

            if (ObjectListView.IsVistaOrLater && this.HasCollapsibleGroups)
                base.DefWndProc(ref m);

            return false;
        }