Hi Peter, >From Python call Catia.SystemService.Evaluate() and hand over a VB script that >does what you need but returns an Array.
This works for all CATIA methods that use an Array as Input/Output-parameter. Regards Andreas Peter Enenkel schrieb am 17.02.2017 um 23:29: > Hello All, > > > I'm trying to read some data from CATIA v5 (which is an older CAD > application) via its COM server. > Overall it works rather well, even if I'm fairly new to COM communication. > > Nevertheless I have run into a problem: One specific function *GetComponents > * is supposed to return > its results via an array passed by reference. As far as I can tell it is > exactly the same problem as > in (1)https://mail.python.org/pipermail/python-win32/2002-November/000562.html > <https://mail.python.org/pipermail/python-win32/2002-November/000562.html> and > (2)https://mail.python.org/pipermail/python-win32/2014-July/013234.html > <https://mail.python.org/pipermail/python-win32/2014-July/013234.html> > unfortunately there doesn't > appear to be a solution as of yet. > > The python call looks something like this > a = list(range(0,12)) > b = catapp.ActiveProduct.Position.GetComponents(a) > print(a) # outputs (0,1,2,3,4,5,6,7,8,9,10,11) instead of the actual values > The equivalent VBScript code is > Dim a(11) As Float > CATIA.ActiveProduct.Position.GetComponents(a) > MsgBox a(0) & ", " & a(1) & ... > The VBScript works as intended, the python one just passes the array back out > unmodified. > > As both other threads state: The Position object above has two methods > *GetComponents *and > *SetComponents *that each take a *CATSafeArrayVariant *as an argument. This > *CATSafeArrayVariant > *should in this case be a one-dimensional array of real values. > CATSafeArrayVariant is a typedef for > a *CATVariant *which itself is *typedef any CATVariant*. > > Any help would be appreciated. As stated above I haven't done much with COM, > but otherwise I'm > reasonably computer savvy and know my way around python. Obviously Catia is a > commercial application > but I have access to the .tlb file if that helps. > > > best regards > Peter Enenkel > > > _______________________________________________ > python-win32 mailing list > python-win32@python.org > https://mail.python.org/mailman/listinfo/python-win32 > _______________________________________________ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
