COM“获取属性”；有多个参数

问题描述

我正在尝试致电 WindowsInstaller。

I'm trying to call WindowsInstaller.Installer.ProductsEx from python, and can't figure out how to make it work.

这是我想从python调用的vbscript版本：

Here's a vbscript version of what I want to call from python:

dim msi, products
set msi = CreateObject("WindowsInstaller.Installer")
set products = msi.ProductsEx("", "s-1-1-0", 7)

我认为我的问题是 ProductsEx 是一个带有3个参数的只读get属性，我不知道如何说服 win32com 或 comtypes 这样称呼。

I think my issue is ProductsEx is a read-only get property that takes 3 arguments, and I don't know how to convince win32com or comtypes to call it that way.

我尝试过：

>>> import win32com.client
>>> msi = win32com.client.Dispatch('WindowsInstaller.Installer')
>>> products = msi.ProductsEx('', 's-1-1-0', 7)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<COMObject WindowsInstaller.Installer>", line 2, in ProductsEx
pywintypes.com_error: (-2147352573, 'Member not found.', None, None)

并使用 comtypes 类似：

>>> import comtypes.client
>>> msi = comtypes.client.CreateObject('WindowsInstaller.Installer')
>>> products = msi.ProductsEx['', 's-1-1-0', 7]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\site-packages\comtypes\client\dynamic.py", line 46, in __getitem__
**dict(_invkind=comtypes.automation.DISPATCH_PROPERTYGET))
  File "C:\Python27\lib\site-packages\comtypes\automation.py", line 768, in Invoke
 args))
_ctypes.COMError: (-2147352571, 'Type mismatch.', ('TypeError: Parameter 1', (('', 's-1-1-0', 7),)))

我想我从 DISPATCH_PROPERTYGET 是我想要做的。在这两个库中，我都尝试了所有可能想到的语法：

I think I got closer in comtypes since DISPATCH_PROPERTYGET is what I want to do. In both libs I tried every syntax I could think of:

• msi.ProductsEx（[''，'s -1-1-0'，7]）


• msi.ProductsEx [[''，'s-1-1- 0'，7]]


• msi.ProductsEx [''] ['s-1-1-0'] [7 ]


• 无而不是''


• 元组而不是列表

• msi.ProductsEx(['', 's-1-1-0', 7])
• msi.ProductsEx[['', 's-1-1-0', 7]]
• msi.ProductsEx['']['s-1-1-0'][7]
• None instead of ''
• tuples instead of lists

如何调用具有多个COM的获取属性来自python的参数？

How do I call a COM "get" property with multiple arguments from python?

推荐答案

使用Get / Set

Use Get/Set

msi.GetProductsEx("", "s-1-1-0", 7)

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