subject_42381.htm

vc

<br>内容：简单错误<BR>CString str;<BR>&nbsp;&nbsp;&nbsp;&nbsp;p-&gt;GetWindowText(str);<BR>&nbsp;&nbsp;&nbsp;&nbsp;if(str.GetString()[0]=='0'&amp;&amp;str.GetString()[1]==NULL)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p-&gt;SetWindowText("1");<BR><BR>中str是CString的一个对象,CString类中根本没有GetString()这个方法，当然报错误。<BR>把if(str.GetString()[0]=='0'&amp;&amp;str.GetString()[1]==NULL)<BR>改成：<BR>if(str[0]=='0' &amp;&amp; str[1]==NULL)就可以了
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回复者：咖啡甜茶 回复日期：2003-06-04 01:47:38
<br>内容：可是不知道怎么会事？我按你的说法改了后有出现新的问题拉！<BR><BR><BR>编译结果：<BR>--------------------Configuration: WINCOUNT - Win32 Debug--------------------<BR>Compiling resources...<BR>Compiling...<BR>Stack.cpp<BR>h:\microsoft visual studio\vc98\mfc\include\afxv_w32.h(119) : warning C4005: '_WIN32_WINDOWS' : macro redefinition<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e:\程序\计算器\calc_1\wincount\stdafx.h(22) : see previous definition of '_WIN32_WINDOWS'<BR>stdafx.cpp<BR>h:\microsoft visual studio\vc98\mfc\include\afxv_w32.h(119) : warning C4005: '_WIN32_WINDOWS' : macro redefinition<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e:\程序\计算器\calc_1\wincount\stdafx.h(22) : see previous definition of '_WIN32_WINDOWS'<BR>wincount.cpp<BR>wincountDlg.cpp<BR>E:\程序\计算器\calc_1\wincount\wincountDlg.cpp(785) : warning C4715: 'CwincountDlg::PreTranslateMessage' : not all control paths return a value<BR>Linking...<BR>nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __endthreadex<BR>nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __beginthreadex<BR>libcd.lib(crt0.obj) : error LNK2001: unresolved external symbol _main<BR>WINCOUNT___Win32_Debug/WINCOUNT.exe : fatal error LNK1120: 3 unresolved externals<BR>Error executing link.exe.<BR><BR>WINCOUNT.exe - 4 error(s), 3 warning(s)
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