Hi All,
I am developing a WIN32 DLL (written in C) that talks to custom
hardware via a COM port. I have a test wrapper written in C working
with the DLL just fine, next job is to create a LabVIEW (7.1 and 8.5)
demo application.
As part of the comms, I need to pass a pointer to a HANDLE into my
init routine (within the DLL), so that the DLL can return a parameter
that I can pass to successive DLL function calls. Again, this all
works fine in a C (actually VC6) environment.
Can anyone point me to the NI white paper that covers passing HANDLEs
to and from LabVIEW apps. I assume that I have to cast everything to
either a VOID* or U32 so that LV can fetch and pass back parameters to
the DLL.
Also, a tutorial of just what the precise implementation of a WIN32
HANDLE is. I have seen rather wishy washy descriptions, but nothing
concrete.
Many thanks,
Mark
