Can chr$(0) be received using mscomm in VB?

[StupidDum]

In ASCII code, 0x0 represent NULL.
The VB code written by my fren could receive any other ASCII, except for chr$(0).
Could any one tell me how to do it?

 

[Dan East]

I am not familar with BASIC (I'm program in C/C++), but ASCII 0 is used to terminate strings (when stored as null-terminated strings), and is often used as EOF (end of file) and EOT (end of transmission). If VB is interpreting ASCII 0 as any of those 3 things then it would appear not to be received.

When you receive the data, are you storing it into a string or a Byte array? You should be using the latter.

Dan East

 

[Exo]

https://msdn.microsoft.com/library/default.asp?url=/library/en-us/comm98/html/vbpronulldisc_comm.asp

 

[Exo]

https://msdn.microsoft.com/library/default.asp?url=/library/en-us/comm98/html/vbpronulldisc_comm.asp

 

[StupidDum]

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/comm98/html/vbpronulldisc_comm.asp

THank a lot!!!
A few sentences solve my problem!!!!
I was thinking to re-define the communication protocol that defined by me, because the VB code written by my IT guy couldn't receive NULL