[IronPython] Calling a System DLL In IronPython?

Michael Foord fuzzyman at voidspace.org.uk
Sun Jan 24 01:31:04 CET 2010

On 24/01/2010 00:19, Andrew Evans wrote:
> I am trying to call user32.dll into IronPython how do I do this? Do I 
> use clr.AddReference, that doesn't seem to do it.

clr.AddReference only works for .NET assemblies. user32.dll is not a 
.NET assembly. To use it you will either need PInvoke or ctypes that 
comes with IronPython 2.6.

PInvoke relies on .NET attributes. It used to be the case that you 
couldn't use these directly with IronPython but needed a simple C# 
wrapper. The following article shows how to call into user32.dll using a 
C# wrapper:


Alternatively you can try clrtype.py that comes with IronPython 2.6.

All the best,

Michael Foord

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