As discussed here: http://stackoverflow.com/questions/8517159/how-to-detect-at-runtime-that-net... Things can get muddled. strictly speaking, using clr4.0 with a framework 2.0 profile would result in the absence of the namespace. It's probably best to try and confirm, regardless of the filename's suggestion. On Jan 22, 2013, at 1:33 PM, Daniel Krause <m.daniel.krause@googlemail.com> wrote:

Thanks for the reminder, I will keep the path in mind.

Python for .NET is installed using pythonnet-2.0dev.clr4.0.win-amd64-py2.7.exe. As I understand it, it uses .NET 4.0 as default? If that is true, it should work, but I had to add the path to get the script running.

2013/1/21 brad@fie.us <brad@fie.us> You should be wary of that hard coded path.

My best guess as to why the namespace is not provided is that the .net framework that is being loaded is pre .net 3.0. I think python.net compiles to 2.0 by default but I'd need to check that.

That Windows.Media.Imaging namespace only became available in .net 3.0 onward.

To do this properly, you'd likely be looking to compile or use python.net in a mode that brings in the standard libs for .net 3.0 or higher. Then it should just be available in the GAC for that .net version.

Distributing a python script with .net dependencies can get rather ugly.

-brad

On Jan 21, 2013, at 2:10 PM, Daniel Krause <m.daniel.krause@googlemail.com> wrote:

...

Hi Jojo,

thanks for your help.

The following code is running (64bit-Windows):

import clr import sys sys.path.append("C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319\\WPF") clr.AddReference("PresentationCore") from System.Windows.Media.Imaging import BitmapSource bitmapsrc = BitmapSource print bitmapsrc

Console output: <class 'System.Windows.Media.Imaging.BitmapSource'>

Best regards Daniel

2013/1/21 Jojo Maquiling <jojo.maquiling@kadjo.org> Hi, In C#, the System.Windows.Media can just be shown if you add the "PresentationCore" as part of your reference. The path of PresentationCore.dll is in C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0 if you are using Visual Studio 2008. I think that might help if you add that as your reference in clr.AddReference. I found some explanation in here - http://social.msdn.microsoft.com/Forums/en-US/windowswic/thread/fdfff143-c1a... I believe this will help you.

HTH

Thanks and best regards,

Jojo Maquiling

On Mon, Jan 21, 2013 at 3:40 AM, Daniel Krause <m.daniel.krause@googlemail.com> wrote:

...

I want to use BitmapSource from System.Windows.Media.Imaging (Documentation here: http://msdn.microsoft.com/de-de/library/system.windows.media.imaging.bitmaps... )

It would be great if someone could help me with this, as I do not have yet much experience with python for .NET, and none at all with .NET itself.

My test script:

import clr clr.AddReference("System.Windows") import System.Windows bitmap = System.Windows.Media.Imaging.BitmapSource()

The interpreter info is: Traceback (most recent call last): File "C:\Users\mdk\workspace\testbitmap.py", line 4, in <module> bitmapsrc = System.Windows.Media.Imaging.BitmapSource() AttributeError: Media

I tried also:

import clr clr.AddReference("System.Windows.Media") import System.Windows bitmapsrc = System.Windows.Media.Imaging.BitmapSource()

Traceback (most recent call last): File "C:\Users\mdk\workspace\testbitmap.py", line 2, in <module> clr.AddReference("System.Windows.Media") System.IO.FileNotFoundException: Unable to find assembly 'System.Windows.Media'. bei Python.Runtime.CLRModule.AddReference(String name)

And I also tried:

import clr clr.AddReference("System.Windows") from System.Windows import Media bitmapsrc = Media.Imaging.BitmapSource()

Traceback (most recent call last): File "C:\Users\mdk\workspace\lr_control\src\lr_control\camera\testbitmap.py", line 3, in <module> from System.Windows import Media ImportError: cannot import name Media

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