这是为什么
--------------------Configuration: 透明位图的显示 - Win32 Debug--------------------
Linking...
透明位图的显示View.obj : error LNK2001: unresolved external symbol __imp__TransparentBlt@44
Debug/透明位图的显示.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
透明位图的显示.exe - 2 error(s), 0 warning(s)