[python-win32] Creating a TLB for PythonCOM server

[Mark Hammond]

You should probably check out the "pippo" examples in the win32com\test 
directory for an example of associating the python COM object with the 
typelib.

HTH,

Mark

On 16/12/2010 12:08 PM, Mariano Reingart wrote:
> Hello
>
> I'm trying to create a type library (TLB) using MIDL.EXE for a
> PythonCom server, but I don't fully understand the brief MSDN
> ducumentation:
> http://msdn.microsoft.com/en-us/library/ms690150(v=VS.85).aspx
>
> I've been able to create the TLB file, but when using it in VB, I get
> a Run-time error '13': "Type mismatch" with this code:
>
> Dim WSAA As PyAfipWs.WSAA
> Set WSAA = CreateObject("WSAA")
> Debug.Print WSAA.Version
>
> Testing it with python, makepy.py sucessfully creates the python
> classes, but it doesn't use them when I do:
>
> win32com.client.Dispatch("WSAA")
>
> Following is the code in question:
>
> Python COM server (stripped version):
> -------------------------------------
>
> class WSAA:
>      _public_methods_ = ['CreateTRA']
>      _public_attrs_ =  _readonly_attrs_ = ['Version']
>      _reg_progid_ = "WSAA"
>      _reg_clsid_ = "{6268820C-8900-4AE9-8A2D-F0A1EBD4CAC5}"
>
>      def __init__(self):
>          self.Version = "1234"
>
>      def CreateTRA(self, service="wsfe", ttl=2400):
>          return "pass"
>
>
> full code at:
> http://code.google.com/p/pyafipws/source/browse/pyafipws.py
>
>
> IDL file (stripped version):
> ----------------------------
>
> import "unknwn.idl","oaidl.idl";
> [
> uuid(6268820C-8900-4AE9-8A2D-F0A1EBD4CAC5),
> helpstring("PyAfipWs WSAA interface"),
> pointer_default(unique),
> //dual,
> //oleautomation
> object
> ]
> interface WSAAif : IDispatch //IUnknown
> {
>     HRESULT CreateTRA([in] VARIANT service, [in] VARIANT ttl,
>                     [out, retval] VARIANT * tra);
>     [propget] HRESULT Version( [out, retval] VARIANT *  sign);
> };
>
> [
> uuid(a03d1423-b1ec-11d0-8c3a-00c04fc31d2f),
> version(1.0),
> helpstring("PyAfipWs Type Library"),
> ] library PyAfipWs
> {
>    importlib("stdole32.tlb");
>    [
>    uuid(a03d1422-b1ec-11d0-8c3a-00c04fc31d2f),
>    helpstring("WSAA Component Class")
>    ] coclass WSAA
>      {
>      [default]interface WSAAif;
>      }	
> }; //end library def
>
>
>
> I think I'm missing something and surely I'm doing something wrong
> (related to IUnknown/IDispatch, dual/oleautomation/object, CLSID,
> PROGID, etc.). I've tested many combinations and none seems to work.
>
>
> Do you have any advice?
>
>
> Thanks in advance,
>
> Mariano Reingart
> http://www.sistemasagiles.com.ar
> http://reingart.blogspot.com
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