subject_15843.htm

一些关于vc的问答

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序号：15843 发表者：有为 发表日期：2002-09-23 09:39:30
<br>主题：SQLCONFIGDATASOURCE的问题
<br>内容：我调用这个函数总不成功。我怀疑是lpszAttributes参数设置的问题。尤其是\0的问题。我用spintf参数化设置lpszAttributes，但这个\0总给我找麻烦。那位大虾指点一下？
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回复者：iwill 回复日期：2002-09-23 12:24:55
<br>内容：先用其他字符代替\0,最后查找替换掉
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<font color=red>答案被接受</font><br>回复者：iwill 回复日期：2002-09-24 09:23:59
<br>内容：&nbsp;&nbsp;&nbsp;&nbsp;CString DataSourceName="db111";<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString DatabaseFileDirectory="c:";<BR>&nbsp;&nbsp;&nbsp;&nbsp;UCHAR nAttributes[1000];<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString nDSN="DSN=";<BR>&nbsp;&nbsp;&nbsp;&nbsp;nDSN+=DataSourceName;<BR>&nbsp;&nbsp;&nbsp;&nbsp;nDSN+="|";<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString nDBQ="DBQ=";<BR>&nbsp;&nbsp;&nbsp;&nbsp;nDBQ+=DatabaseFileDirectory;<BR>&nbsp;&nbsp;&nbsp;&nbsp;nDBQ+="\\db1.MDB|";<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString nDefaultDir="DefaultDir=";<BR>&nbsp;&nbsp;&nbsp;&nbsp;nDefaultDir+=DatabaseFileDirectory;<BR>&nbsp;&nbsp;&nbsp;&nbsp;nDefaultDir+="|";//数据库目录<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString nFil="FIL=MS Access;|";<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString nDriverID="DriverID=25|";<BR>&nbsp;&nbsp;&nbsp;&nbsp;sprintf((char*)nAttributes,"%s%s%s%s%s|",nDSN,nDBQ,nDefaultDir,nFil,nDriverID);<BR>&nbsp;&nbsp;&nbsp;&nbsp;for (int i=0;i&lt;1000;i++)<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(nAttributes[i]=='|')<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; nAttributes[i]=0;<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;SQLConfigDataSource(NULL,ODBC_ADD_SYS_DSN,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"Microsoft Access Driver (*.mdb)", <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(char*)nAttributes);<BR>&nbsp;&nbsp;&nbsp;&nbsp;
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