Matt <[EMAIL PROTECTED]> wrote: > Hm, thanks, now I can access my data in the functions and also write > them but the program keeps terminating right at the point when the > "open" function finishes. Unfortunately everything closes and I get no > error messages. > > I did some additional work in the meantime and changed my code so it has > the correct datatypes now: > > > def pystreamopen (contextH, mode, pErr): > print "opening..." > print contextH.contents.dwBufferSize #just to check the structure > print mode #tells about what the DLL wants to do with this stream
You program is crashing somewhere after here since mode is printed but nothing else is > contextH.contents.mode = c_byte(5) #5=Permission to read and write > contextH.contents.lPos = c_uint(0) #start position > > print pErr.contents > pErr.contents = c_uint(0) Try commenting out these lines and see if it works, then uncomment one at a time. Also is that supposed to be returning something? > Anyway, meanwhile decided to try a different approach. Maybe I have > more luck by having the function write the data directly into a file on > the HDD. > Doe anyone know how to translate the following into Python/ctypes? > > I googled quite a lot before but all topic-related I found was my own > posting here in this NG :S > > pFilStrm->hFile = CreateFile( pFilStrm->szFileName, > > dwDesiredAccess, > dwShareMode, > NULL, > dwCreationDisposition, > FILE_ATTRIBUTE_NORMAL, > NULL ); use os.read os.write and os.open which will give you OS handles rather than python file objects, ie I think these are a fairly direct interface to CreatFile etc (but I could be wrong - I'm not a windows expert!) -- Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick -- http://mail.python.org/mailman/listinfo/python-list
