Thank you to your respond. I looked into the library I need using OLE explorer. At the and of my message I paste the intormation I got from there. Could anybody give me a tip how to access IJYMonoReqd interface. Thank you in advance Petro -------------- // Generated .IDL file (by the OLE/COM Object Viewer) // // typelib filename: JYMono.dll
[ uuid(D7E942DC-3716-4BC1-8DA2-08D273BDC501), version(1.0), helpstring("JYMono 1.0 Type Library"), custom(DE77BA64-517C-11D1-A2DA-0000F8773CE9, 83951780), custom(DE77BA63-517C-11D1-A2DA-0000F8773CE9, 1181570652) ] library JYMONOLib { // TLib : // TLib : JYSystemLib 1.0 Type Library : // {638F5A15-35A6-4F7D-B8ED-B48A4CD4C619} importlib("JYSystemLib.dll"); // Forward declare all types defined in this // typelib [ uuid(BFF968D4-7B20-4D16-BD3A-BDEFEB0863A4), helpstring("Monochromator Class") ] coclass Monochromator { [default] interface IJYMonoReqd; [default, source] dispinterface _IJYDeviceReqdEvents; }; }; ------------------------------------------------------- [ uuid(BFF968D4-7B20-4D16-BD3A-BDEFEB0863A4), helpstring("Monochromator Class") ] coclass Monochromator { [default] interface IJYMonoReqd; [default, source] dispinterface _IJYDeviceReqdEvents; }; ------------------------------------------------------------------ [ uuid(7963F672-D074-4F67-B15C-AF022065927E), helpstring("IJYMonoReqd Interface"), dual ] dispinterface IJYMonoReqd { properties: methods: [id(0x00000001), helpstring("Method Load")] void Load(); [id(0x00000002), helpstring("Method Save")] void Save(); [id(0x00000003), helpstring("Method OpenCommunicationsEx")] void OpenCommunicationsEx( [in] jyCommType __MIDL_0016, [in] int portNum, [in, optional] ....... ________________________________________________________________________ On Fri, Jan 10, 2014 at 07:51:57PM +0100, Thomas Heller wrote: > Am 10.01.2014 15:26, schrieb Khoroshyy Petro: > >Hi list, > >I try to control a setup which consist of a monochromator and a CCD camera. > [...] > > > >Now if I try to access a monochromator coclass from another libray in > >the same way I get com_error: (-2147221005. > >instrument = win32com.client.Dispatch("JYMONOLib.IJYMonoReqd") > >or > >instrument = win32com.client.Dispatch("JYMONOLib.Monochromator") > > > You can use ctypes.WinError to look up the error code if it known > to windows: > > >>> from ctypes import * > >>> raise WinError(-2147221005) > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > WindowsError: [Error -2147221005] Ungültige Klassenzeichenfolge > >>> > > In english this would read: 'Invalid class string'. > > This means that the COM runtime does not know about the > "JYMONOLib.IJYMonoReqd" and "JYMONOLib.Monochromator" names. > > Thomas > > _______________________________________________ > 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