vc++编程 两类典型的 lnk2001错误分析及解决方法（Vc++ programming two typical LNK2001 error analysis and Solutions）.docVIP

vc++编程 两类典型的 lnk2001错误分析及解决方法（Vc++ programming two typical LNK2001 error analysis and Solutions） VC++ programming two typical LNK2001 error analysis and Solutions First, the operational environment problems When creating a MFC project, you do not use the MFC AppWizard wizard. If you do not set the project parameters, you will create a lot of connection errors at compile time, such as error LNK2001 errors and typical error prompts: Libcmtd.lib (crt0.obj): error, LNK2001:, unresolved, external, symbol, _main LIBCD.lib (wincrt0.obj): error, LNK2001:, unresolved, external, symbol, _WinMain@16 Msvcrtd.lib (crtexew.obj): error, LNK2001:, unresolved, external, symbol, _WinMain@16 Nafxcwd.lib (thrdcore.obj): error, LNK2001:, unresolved, external, symbol, __beginthreadex Nafxcwd.lib (thrdcore.obj): error, LNK2001:, unresolved, external, symbol, __endthreadex The solution is described below: 1. Windows subsystem settings error, prompt: Libcmtd.lib (crt0.obj): error, LNK2001:, unresolved, external, symbol, _main The Windows project uses the Windows subsystem, not the Console, so you can set it up like this: [Project] -- [Settings] -- select the Link property page, Change /subsystem:console to /subsystem:windows in Project Options 2. Console subsystem settings error, prompt: LIBCD.lib (wincrt0.obj): error, LNK2001:, unresolved, external, symbol, _WinMain@16 The console project uses the Console subsystem instead of the Windows setting: [Project] -- [Settings] -- select the Link property page, Change /subsystem:windows to /subsystem:console in Project Options 3. program entry settings error, prompt: Msvcrtd.lib (crtexew.obj): error, LNK2001:, unresolved, external, symbol, _WinMain@16 Typically, the program entry function of the MFC project is WinMain. If the Unicode version of the project is compiled, the program entry must be changed to wWinMainCRTStartup, so you need to reset the program entry: [Project] -- [Settings] -- select the C/C++ property page, In Category, selec