A few years ago Jens from OraTool.de wrote the dataengine component for cxGrid and I deployed this component as part of SMExport
But Developer Express also have the TcxTreeList and TcxDBTreeList components. In friday I wrote the dataengines for these components:
- TSMEcxTreeListDataEngine component: data engine for DevExpress TcxTreeList export
- TSMEcxDBTreeListDataEngine component: data engine for DevExpress TcxDBTreeList export