代码说明： Open source project. Contains: Graphic Query design sample (MS Access-like) LineDDA using Sample Drawing something (lines, images etc.) over the MDI form's ClientHandle Convert the query results to CSV (comma delimited) format Convert the query results to XLS format Convert the query results to RTF format Drag and Drop sample between TCheckListBoxes (Tables). LineDDA、绘图、变换文件格式的例子

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