I downloaded two pieces of code on the NET, is under the vc + + 6.0 use directX 9.0 DirectShow development, I now is the Windows 7 system, vc + + 6.0 and Windows SDK for Windows 7 and. NET Framework 4 DirectShow, but variable configured later still will have similar to the "missing"; '" and such mistake, this is your own Windows SDK and vc + + incompatible problem? Code must be the right oh, strives for the great god answer!!!!! An actual emergency.