vc++初学者请问各位一个问题
程序编译时出现如下内容:
Linking...
test06Dlg.obj : error LNK2001: unresolved external symbol "int __stdcall VCAResetMapRegion(struct tagRECT *,struct tagRECT *)" (?VCAResetMapRegion@@YGHPAUtagRECT@@0@Z)
test06Dlg.obj : error LNK2001: unresolved external symbol "int __stdcall VCAStartVideoPreview(unsigned long)" (?VCAStartVideoPreview@@YGHK@Z)
test06Dlg.obj : error LNK2001: unresolved external symbol "int __stdcall VCAUpdateVideoPreview(unsigned long,struct HWND__ *)" (?VCAUpdateVideoPreview@@YGHKPAUHWND__@@@Z)
test06Dlg.obj : error LNK2001: unresolved external symbol "int __stdcall VCAStopVideoPreview(unsigned long)" (?VCAStopVideoPreview@@YGHK@Z)
test06Dlg.obj : error LNK2001: unresolved external symbol "long __stdcall VCAGetDevNum(void)" (?VCAGetDevNum@@YGJXZ)
test06Dlg.obj : error LNK2001: unresolved external symbol "int __stdcall VCAInitSdk(struct HWND__ *)" (?VCAInitSdk@@YGHPAUHWND__@@@Z)
Debug/test06.exe : fatal error LNK1120: 6 unresolved externals
Error executing link.exe.
请问是何原因?如何解决?
请详细些,万分感谢!