when I try to compile drs_exam project my computer give me this output:
1>------ Rebuild All started: Project: drs_exam, Configuration: Debug Win32 ------
Have a look at the web site http://www.psi.ch/drs/software-download . Under the MS Windows section it says that you have to install the libusb-1.0 package first before you can compile the example program. This is also obvious from the missing _usb_* functions in the error listing above.