compile the previous file input program(http://www.pudn.com/downloads385/sourcecode/windows/database/detail1653649.html) as a dll,and use call-back function to get the data from the dll,so we can use the dll read txt or excel data and using as we like.

回调函数实现dll向主程序传递数据（对话框导入数据dll）\FileInputDll\DataDlg.cpp
....................................................\............\DataDlg.h
....................................................\............\.ebug\DataDlg.obj
....................................................\............\.....\DataDlg.sbr
....................................................\............\.....\DllExport.obj
....................................................\............\.....\FileInputDll.bsc
....................................................\............\.....\FileInputDll.dll
....................................................\............\.....\FileInputDll.exp
....................................................\............\.....\FileInputDll.ilk
....................................................\............\.....\FileInputDll.lib
....................................................\............\.....\FileInputDll.obj
....................................................\............\.....\FileInputDll.pch
....................................................\............\.....\FileInputDll.pdb
....................................................\............\.....\FileInputDll.res
....................................................\............\.....\FileInputDll.sbr
....................................................\............\.....\FileInputDll.tlb
....................................................\............\.....\GridCell.obj
....................................................\............\.....\GridCell.sbr
....................................................\............\.....\GridCellBase.obj
....................................................\............\.....\GridCellBase.sbr
....................................................\............\.....\GridCellCheck.obj
....................................................\............\.....\GridCellCheck.sbr
....................................................\............\.....\GridCellCombo.obj
....................................................\............\.....\GridCellCombo.sbr
....................................................\............\.....\GridCellDateTime.obj
....................................................\............\.....\GridCellDateTime.sbr
....................................................\............\.....\GridCellNumeric.obj
....................................................\............\.....\GridCellNumeric.sbr
....................................................\............\.....\GridCtrl.obj
....................................................\............\.....\GridCtrl.sbr
....................................................\............\.....\GridDropTarget.obj
....................................................\............\.....\GridDropTarget.sbr
....................................................\............\.....\GridURLCell.obj
....................................................\............\.....\GridURLCell.sbr
....................................................\............\.....\InPlaceEdit.obj
....................................................\............\.....\InPlaceEdit.sbr
....................................................\............\.....\StdAfx.obj
....................................................\............\.....\StdAfx.sbr
....................................................\............\.....\TitleTip.obj
....................................................\............\.....\TitleTip.sbr
....................................................\............\.....\vc60.idb
....................................................\............\.....\vc60.pdb
....................................................\............\DllExport.h
....................................................\............\FileInputDll.aps
....................................................\............\FileInputDll.clw
....................................................\............\FileInputDll.cpp
....................................................\............\FileInputDll.def
...................

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