[Q] Passing binary data via IDispatch?

[Guest_imported]

Hiya

I want to write a COM server which passes binary data to and
from a piece of hardware. The server must be usable from VB.

Since I'm writing with Borland Builder C++ the obvious way
is to return a char*, but can VB cope with this? Can a BSTR
be used for this purpose?

Cheers,
Jon

 

[jmarler]

You should be able to treat the binary data as an array of bytes. In visual basic, an array of bytes can be treated as a simple string although if you print it, it will look like gibberish. After you have the string in VB, set it equal to a dynamic array of bytes and you should be able to see each byte individually.

 

[praveensg]

how can i see the contents of each byte.Are there any conversion functions available...Please let me know
Thanx