vs2010 MFC 中的一个报错:error LNK2001

本文介绍了解决LNK2001错误的方法,该错误通常由于函数声明而未定义导致。通过一个实际案例分享了如何通过检查并重新添加缺失的cpp文件来修复此问题。

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一般反应如下:
error LNK2001: unresolved external symbol “public: static struct CRuntimeClass const CProgaram53Doc::classCProgaram53Doc” (?classCProgaram53Doc@CProgaram53Doc@@2UCRuntimeClass@@B)

一般的原因是:
函数声明了,但没有定义。就是没有这个函数的具体实现。


本人就是在一个项目中,误删了一个cpp,后来加上就好了。希望大家遇到同样问题不要慌,仔细找找。

如果这个解决不了的话,那不好意思了,暂时还不知道其他的。

在引用读卡器头文件时,会报错TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* TyA_CS_Write)(void *,unsigned char,unsigned char *)" (?TyA_CS_Write@@3P6GHPAXEPAE@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* TyA_CS_Read)(void *,unsigned char,unsigned char *,unsigned char *)" (?TyA_CS_Read@@3P6GHPAXEPAE1@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* TyA_CS_Authentication2)(void *,unsigned char,unsigned char,unsigned char *)" (?TyA_CS_Authentication2@@3P6GHPAXEEPAE@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* TyA_Halt)(void *)" (?TyA_Halt@@3P6GHPAX@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* TyA_Select)(void *,unsigned char *,unsigned char,unsigned char *)" (?TyA_Select@@3P6GHPAXPAEE1@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* TyA_Anticollision)(void *,unsigned char,unsigned char *,unsigned char *)" (?TyA_Anticollision@@3P6GHPAXEPAE1@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* TyA_Request)(void *,unsigned char,unsigned short *)" (?TyA_Request@@3P6GHPAXEPAG@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_InitType)(void *,unsigned char)" (?Sys_InitType@@3P6GHPAXE@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_SetAntenna)(void *,unsigned char)" (?Sys_SetAntenna@@3P6GHPAXE@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_SetBuzzer)(void *,unsigned char)" (?Sys_SetBuzzer@@3P6GHPAXE@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_SetLight)(void *,unsigned char)" (?Sys_SetLight@@3P6GHPAXE@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_Close)(void * *)" (?Sys_Close@@3P6GHPAPAX@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_IsOpen)(void *)" (?Sys_IsOpen@@3P6GHPAX@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_Open)(void * *,unsigned long,unsigned short,unsigned short)" (?Sys_Open@@3P6GHPAPAXKGG@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_GetHidSerialNumberStr)(unsigned long,unsigned short,unsigned short,char *,unsigned long)" (?Sys_GetHidSerialNumberStr@@3P6GHKGGPADK@ZA) TransJoborderDlg.obj : error LNK2001: unresolved external symbol "int (__stdcall* Sys_GetDeviceNum)(unsigned short,unsigned short,unsigned long *)" (?Sys_GetDeviceNum@@3P6GHGGPAK@ZA)这个如何解决
07-03
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