________如何解决error LNK2001: unresolved external symbol_________?

[sydt2000]

俺把一个VC项目 FOUNDATION CLASSES
从 Not Using MFC 改为 Use MFC in a Shared Dll
编译错误如下,应如何设置使其支持 MFC?

Linking...
Creating library Debug/mfc.lib and object Debug/mfc.exp
LINK : warning LNK4098: defaultlib "MSVCRT" conflicts with use of other libs; use /NODEFAULTLIB:library
toolkit7.lib(wheap.obj) : error LNK2001: unresolved external symbol __imp__MessageBoxA@16
toolkit7.lib(getintg.obj) : error LNK2001: unresolved external symbol __imp__GetDlgItemTextA@16
udconfig.obj : error LNK2001: unresolved external symbol __imp__SetFocus@4
udconfig.obj : error LNK2001: unresolved external symbol __imp__SetDlgItemInt@16
udconfig.obj : error LNK2001: unresolved external symbol __imp__EnableWindow@8
udconfig.obj : error LNK2001: unresolved external symbol __imp__GetDlgItem@8
udmain.obj : error LNK2001: unresolved external symbol __imp__GetDlgItem@8
udconfig.obj : error LNK2001: unresolved external symbol __imp__InvalidateRect@12
udmain.obj : error LNK2001: unresolved external symbol __imp__DrawMenuBar@4
udmain.obj : error LNK2001: unresolved external symbol __imp__AppendMenuA@16
udmain.obj : error LNK2001: unresolved external symbol __imp__GetSystemMenu@8
...

[fireseed]

如果你用的是VC7以上的话：
进入工程属性 -> 链接器 -> 输入 -> 忽略所有默认库
改为“否”！

[柯本]

程序头上加
#pragma comment (lib,"user32.lib")

[gooyan]

user32.lib文件要添加到project/setting/link/object...modules下

[sydt2000]

To: gooyan(超级替补)
按你说做了
从 mfc.exe - 184 error(s), 1 warning(s)
变为 mfc.exe - 32 error(s), 1 warning(s)

继续帮忙!

uddumpsc.obj : error LNK2001: unresolved external symbol __imp__TextOutA@20
uddumpsc.obj : error LNK2001: unresolved external symbol __imp__GetTextExtentPointA@16
toolkit7.lib(ntsrvr.obj) : error LNK2001: unresolved external symbol __imp__GetTextExtentPointA@16
udmain.obj : error LNK2001: unresolved external symbol __imp__DeleteObject@4
udmain.obj : error LNK2001: unresolved external symbol __imp__SelectObject@8
toolkit7.lib(ww3d.obj) : error LNK2001: unresolved external symbol __imp__SelectObject@8
...

[fireseed]

楼主为何不按我说的作？我的解决方法是最好的。

你这些问题都会解决

[sydt2000]

To : fireseed(奶油狗)
我用 VC6.
BCB6用过几天,现在刚用VC,晕ING...

现在还有一个警告!
LINK : warning LNK4098: defaultlib "MSVCRT" conflicts with use of other libs; use /NODEFAULTLIB:library

[fireseed]

我以为你是VC7
VC6有一个prject菜单，里面有一个setting，你找一找，有一项是Ignore all default library
设为no


好多年没用VC6了，记不清楚了

[sydt2000]

To:fireseed(奶油狗)
如果选中 Ignore all default library

Error executing link.exe.

mfc.exe - 200 error(s), 0 warning(s)

[sydt2000]

新问题
偶在项目中新增加两个
#include "opcdefine.h"
#include "opcmodul.h"
文件,产生如下错误!

c:\program files\microsoft visual studio\vc98\mfc\include\afx.h(15) : fatal error C1189: #error : MFC requires C++

compilation (use a .cpp suffix)
Error executing cl.exe.
Creating browse info file...
BSCMAKE: error BK1506 : cannot open file '.\Debug\udmain.sbr': No such file or directory
Error executing bscmake.exe.
继续帮忙

[sydt2000]

To : oyljerry(【勇敢的心】→ ㊣X-Man㊣)
rebuild all 没用!c:\program files\microsoft visual studio\vc98\mfc\include\afx.h(15) : fatal error C1189: #error : MFC requires C++ compilation (use a .cpp suffix)
Error executing cl.exe.
Creating browse info file...
BSCMAKE: error BK1506 : cannot open file '.\Debug\opcdef.sbr': No such file or directory
Error executing bscmake.exe.

[oyljerry]

rebuild all

[sydt2000]

To: rategy(呼吸空气的鱼)
目前还不想用此法!
Help!!!

[aben456]

1.找不到LIB
2.找不到*.CPP实现文件

[sydt2000]

To:aben456(相逢一笑)
已经把后加的库,头文件,实现文件加到项目中去了!
VC可真让人头大!!!

[sydt2000]

最新问题!
\mfc\include\afx.h(15) : fatal error C1189: #error : MFC requires C++ compilation (use a .cpp suffix)
Error executing cl.exe.
Creating browse info file...
BSCMAKE: error BK1506 : cannot open file '.\Debug\opcdef.sbr': No such file or directory
Error executing bscmake.exe.

[rategy]

建议重新用向导做一个然后比比这两个的区别，就知道如何去做了。

[sydt2000]

继续帮忙!

[sydt2000]

没解决,先结帖!
感谢各位!!!