thx,

if found following three commands, but i am not able to get them running:

Code:
usbhandle = CreateFile( ...USB PORT GUID...,
                    GENERIC_WRITE,
                    FILE_SHARE_WRITE,
                    NULL,
                    OPEN_EXISTING,
                    0,
                    0 );

-> here i get an error - GENERIC_WRITE, FILE_SHARE_WRITE, OPEN_EXISTING do not exist... ???

Code:
DeviceIoControl( usbhandle, 0x04, pIn, sizeof(szIn), pOut,
                        sizeof(szOut), lpByte, NULL );


0x04
pIn
szIn
pOut
szOut

...are specific port-functions/ bites to read...

and
Code:
CloseHandle( usbhandle );


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