subject_62671.htm

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序号：62671 发表者：walter0505 发表日期：2003-11-28 08:40:05
<br>主题：一个数据库连接问题?
<br>内容：在一个已经做好的工程中,我想把数据库加进去,于是我增加了一个新类(emplist.cpp),其基类为CDaoRecordset.可是当我运行时却出现如下错误:<BR>:\vc\projects\myreport4\emplist.h(14) : error C2504: 'CDaoRecordset' : base class undefined<BR>e:\vc\projects\myreport4\emplist.h(16) : error C2629: unexpected 'class CEmpList ('<BR>e:\vc\projects\myreport4\emplist.h(16) : error C2238: unexpected token(s) preceding ';'<BR>e:\vc\projects\myreport4\emplist.h(34) : error C2061: syntax error : identifier 'CDaoFieldExchange'<BR>E:\vc\projects\MyReport4\EmpList.cpp(17) : error C2653: 'CDaoRecordset' : is not a class or namespace name<BR>E:\vc\projects\MyReport4\EmpList.cpp(17) : error C2065: 'classCDaoRecordset' : undeclared identifier<BR>E:\vc\projects\MyReport4\EmpList.cpp(19) : error C2065: 'CDaoDatabase' : undeclared identifier<BR>E:\vc\projects\MyReport4\EmpList.cpp(19) : error C2065: 'pdb' : undeclared identifier<BR>E:\vc\projects\MyReport4\EmpList.cpp(20) : error C2448: '&lt;Unknown&gt;' : function-style initializer appears to be a function definition<BR>E:\vc\projects\MyReport4\EmpList.cpp(20) : error C2143: syntax error : missing ';' before ':'<BR>E:\vc\projects\MyReport4\EmpList.cpp(21) : error C2448: '&lt;Unknown&gt;' : function-style initializer appears to be a function definition<BR>E:\vc\projects\MyReport4\EmpList.cpp(65) : error C2065: 'CDaoFieldExchange' : undeclared identifier<BR>E:\vc\projects\MyReport4\EmpList.cpp(65) : error C2065: 'pFX' : undeclared identifier<BR>E:\vc\projects\MyReport4\EmpList.cpp(66) : error C2448: '&lt;Unknown&gt;' : function-style initializer appears to be a function definition<BR>E:\vc\projects\MyReport4\EmpList.cpp(83) : error C2653: 'CDaoRecordset' : is not a class or namespace name<BR>E:\vc\projects\MyReport4\EmpList.cpp(88) : error C2653: 'CDaoRecordset' : is not a class or namespace name<BR>这个为什么呀?有哪位大虾帮我解释一下!谢谢!
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<font color=red>答案被接受</font><br>回复者：dstwwx 回复日期：2003-11-28 08:51:51
<br>内容：应该在stdafx.h中增加头文件<BR>#include &#34;afxdao.h&#34;
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回复者：walter0505 回复日期：2003-11-28 09:01:14
<br>内容：谢谢你!
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