Hi,
I have written a device driver with MS DDK for acquire data from acquisition board in Win2K.
I'm developing my program in LabWindows/CVI 7.0 and I found in directory Vxd the example for
asynchronous interrupt callback.
I try my device driver with program interface in VC++ and I have not problem.
But when I run the CVI examples I noted that the variables hEvent and hVxd in CallBackFunc
have not a value. Follow instruction DeviceIoControl have not effect because the handle
of device driver is missing.
hEvent and hVxd are extern variables and the CallbackFunc was compiled as object module
Thank for your help
