error LNK2001: unresolved external symbol _AVIFileExit@0_unresolved external symbol avifilerelease-优快云博客

本文链接：https://blog.youkuaiyun.com/bl520025/article/details/6568243

本文介绍了解决屏幕录像程序在包含Vfw.h头文件后出现的一系列未解析外部符号错误的方法。通过在项目设置中添加VFW32.Lib和Winmm.lib库，成功解决了所有链接错误。

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在移植一段屏幕录像程序功能的时候出错，包含了头文件#include "Vfw.h" 链接时出错

Linking...
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIFileExit@0
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIFileRelease@4
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamRelease@4
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamGetFrameClose@4
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamGetFrame@8
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamGetFrameOpen@8
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamInfoA@12
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamLength@4
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamStart@4
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIFileGetStream@16
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIFileInfoA@12
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIFileOpenA@16
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIFileInit@0
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamWrite@32
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIStreamSetFormat@16
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIMakeCompressedStream@16
ScreenCapDlg.obj : error LNK2001: unresolved external symbol __imp__mmioStringToFOURCCA@8
ScreenCapDlg.obj : error LNK2001: unresolved external symbol _AVIFileCreateStreamA@12
Debug/ScreenCap.exe : fatal error LNK1120: 18 unresolved externals
Error executing link.exe.

ScreenCap.exe - 19 error(s), 0 warning(s)

在Project->Settings->Link->Object/library modules:中添加 VFW32.Lib

还有一个错误

Linking...
ScreenCapDlg.obj : error LNK2001: unresolved external symbol __imp__mmioStringToFOURCCA@8
Debug/ScreenCap.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

ScreenCap.exe - 2 error(s), 0 warning(s)

在Project->Settings->Link->Object/library modules:中添加 Winmm.lib

问题全部解决