Adding an "Interface" from IDL / tlb files to an existing win32COM-Object

VolkerS

Hallo,
I need helping adding an existing Interface to an object I dispatched from a COM-server via win32com in Python.

The Code for this in VisualBasic looks like that:

Expand|Select|Wrap|Line Numbers

 
Private Obj_1 As Obj1_LIB.Impl_1

Private mHelper As Object

Private m_applJob As Object

Private m_applModul As interface_Module //interface_Module is described in an IDL/TLB-File

Private cont As Boolean

Private c_applJob As New ApplicationJob.Job
 
 Set m_Obj_1 = CreateObject("Obj1_LIB.Impl_1")

m_Obj_1.Init
 
 Set mHelper = CreateObject("ModulHelper.Helper")

Set m_applJob = CreateObject("ApplicationJob.Job")

    Set m_applModul = m_applJob
 
    m_applModul.method1_from_appl_module

    m_applModul.method2_from_appl_module

These methods (method1/_from_appl_module) are part of the interface loaded from interface_module and not part of the m_applJob-Object. Nevertheless, m_applModul now also supports all methods from the m_applJob-Object.

So how can I do this in Python?
I tried this, which didn't work:

Expand|Select|Wrap|Line Numbers

 
import win32com.client

Obj_1 = win32com.client.Dispatch("Obj1_LIB.Impl_1")

Obj_1.Init()
 
ModulHelp = win32com.client.Dispatch("ModulHelper.Helper")

applJob = win32com.client.Dispatch("ApplicationJob.Job")
 
applJob._oleobj_.QueryInterface("{7DE9DB29-1794-4C3B-95EA-E1324B15BBE6}")  ##using the uuid of the interface described in the IDL

This says "interface not supported"

I'd appreciate your help in this!

bartonc

Quote:

Originally Posted by VolkerS

Hallo,
I need helping adding an existing Interface to an object I dispatched from a COM-server via win32com in Python.

The Code for this in VisualBasic looks like that:

Expand|Select|Wrap|Line Numbers

 
Private Obj_1 As Obj1_LIB.Impl_1

Private mHelper As Object

Private m_applJob As Object

Private m_applModul As interface_Module //interface_Module is described in an IDL/TLB-File

Private cont As Boolean

Private c_applJob As New ApplicationJob.Job
 
 Set m_Obj_1 = CreateObject("Obj1_LIB.Impl_1")

m_Obj_1.Init
 
 Set mHelper = CreateObject("ModulHelper.Helper")

Set m_applJob = CreateObject("ApplicationJob.Job")

    Set m_applModul = m_applJob
 
    m_applModul.method1_from_appl_module

    m_applModul.method2_from_appl_module

These methods (method1/_from_appl_module) are part of the interface loaded from interface_module and not part of the m_applJob-Object. Nevertheless, m_applModul now also supports all methods from the m_applJob-Object.

So how can I do this in Python?
I tried this, which didn't work:

Expand|Select|Wrap|Line Numbers

 
import win32com.client

Obj_1 = win32com.client.Dispatch("Obj1_LIB.Impl_1")

Obj_1.Init()
 
ModulHelp = win32com.client.Dispatch("ModulHelper.Helper")

applJob = win32com.client.Dispatch("ApplicationJob.Job")
 
applJob._oleobj_.QueryInterface("{7DE9DB29-1794-4C3B-95EA-E1324B15BBE6}")  ##using the uuid of the interface described in the IDL

This says "interface not supported"

I'd appreciate your help in this!

It would help if you paste the whole error message. Sometimes, even if a pythoneer dosn't know a particular package, they can deduce what's wrong from the error message. Thanks.

VolkerS

The error message I get is:

Traceback (most recent call last):
File "C:\PROGRA~1\python\lib\site-packages\Pythonwin\pywin\framework\scriptutils.py" , line 310, in RunScript
exec codeObject in __main__.__dict__
File "M:\Diagnose\Projekt EE61\ApplJob4test.py", line 655, in ?
m_applJob=applJob._oleobj_.QueryInterface("{7DE9DB 29-1794-4C3B-95EA-E1324B15BBE6}")
com_error: (-2147467262, 'Schnittstelle nicht unterst\xfctzt', None, None)

in fact it also happens (sometimes, without changing the code) that I get this message:

Traceback (most recent call last):
File "C:\PROGRA~1\python\lib\site-packages\Pythonwin\pywin\framework\scriptutils.py" , line 310, in RunScript
exec codeObject in __main__.__dict__
File "M:\Diagnose\Projekt EE61\ApplJob4test.py", line 655, in ?
m_applJob=applJob._oleobj_.QueryInterface("{7DE9DB 29-1794-4C3B-95EA-E1324B15BBE6}")
TypeError: There is no interface object registered that supports this IID

Adding an "Interface" from IDL / tlb files to an existing win32COM-Object

re: Adding an "Interface" from IDL / tlb files to an existing win32COM-Object

re: Adding an "Interface" from IDL / tlb files to an existing win32COM-Object

Similar Python bytes

/bytes/development

/bytes/it

/bytes/about