[Linker Error] Unresolved external '_CG_DESC' referenced from F:\CHEN\PROJECT\图像处理附\PROJECT2.OBJ?
[Linker Error] Unresolved external '_CG_DESC' referenced from F:\CHEN\PROJECT\图像处理附\PROJECT2.OBJ
[Linker Error] Unresolved external '_CG_DTORTHIS' referenced from F:\CHEN\PROJECT\图像处理附\PROJECT2.OBJ
[Linker Error] Unresolved external '_CG_A_BP' referenced from F:\CHEN\PROJECT\图像处理附\PROJECT2.OBJ
[Linker Error] Unresolved external '_CG_GDA_EGY' referenced from F:\CHEN\PROJECT\图像处理附\PROJECT2.OBJ
[Linker Error] Unresolved external '_CG_THIS' referenced from F:\CHEN\PROJECT\图像处理附\UNIT2.OBJ
[Linker Error] Unresolved external '_CG_DA_EPY' referenced from F:\CHEN\PROJECT\图像处理附\UNIT2.OBJ
[Linker Error] Unresolved external '_CG_DA_BEPXSY' referenced from F:\CHEN\PROJECT\图像处理附\UNIT2.OBJ
怎么回事???