To read data from parallel port with interrupt

[jo_BTL]

I try to write a LabVIEW porgram to read/write data from parallel port with extra hardware (microcontroller). I have a problem with interrupt to change LabVIEW program from C plus plus. If you have any idea for the C program in attached file, please need your help.
Thanks in advance.

[Lab Viewer]

Try to make a CIN using your C code (you have a manual (pdf format) about calling external code on your labview CD)
Also, if you go to NI site -> Knowledge Base and search for 'read +parallel +port', you will find documentation and some VIs to control the port as you want.
good luck!