[IronPython] Calling external API from IronPython

Ryan Dawson rdawson at exchange.microsoft.com
Fri Sep 22 18:10:12 CEST 2006

The question is relevant, but this isn't supported directly from IronPython in 1.0.  The workaround is to write a small wrapper library in VB or C# and call that from IronPython.

The limitation is rooted in the fact that 1.0 doesn't support .NET attributes, like the DllImportAttribute.  Possible future solutions to this have been discussed on the list previously.  We're hopeful a later version will be able to directly meet your needs here.


-----Original Message-----
From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of David Anton
Sent: Thursday, September 21, 2006 11:44 AM
To: users at lists.ironpython.com
Subject: [IronPython] Calling external API from IronPython

Is there a way to declare external API functions (non-assembly based) called
from Python code?

e.g., in VB, you'd do something like declare the following stub:
Private Declare Function FriendlyName Lib "kernel32" Alias
"ActualAPIFunctionName"(ByVal SomeString As String) As Integer

e.g., in C#, you'd do it this way:
EntryPoint="ActualAPIFunctionName", ExactSpelling=false,
CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
private static extern int FriendlyName(string SomeString);

Or is this irrelevant in Python (and why)?  I'm learning Python and I'm
continually surprised at how many things are just not even relevant in
Python (explicit types, interfaces, abstract methods, namespaces, etc....).

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