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pc parallell port

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Jiko

Technical User
Apr 5, 2002
35
SE
We want to communicate with the parallellport,can anyone give us any tips on how to do it?
 
We use this function when we try to open the paralellport. When we click on the open button we have, we get this message: debug assertion failed
file: winocc.cpp
Whats wrong?

The class CIO is from an ActiveX component, that we found at
long CIO::Open(LPCTSTR PortName, LPCTSTR Setup)
{
long result;
static BYTE parms[] =
VTS_BSTR VTS_BSTR;
InvokeHelper(0x10, DISPATCH_METHOD, VT_I4, (void*)&result, parms,
PortName, Setup);
return result;
}
 
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