Loading images from memory streams

Hey all, I'm sure this was covered before somewhere, but I couldn't
find it in the archives.

What I'm trying to do:

Embed icons into the assembly, and load them out at runtime into a
BitmapButton.

Why I don't want to just include it as a file along with the exe:

In linux, if you call the application from a different directory, it
only checks the working directory for the icons. (if the app is in
/usr/bin and I call it from ~/, the bitmaps are nowhere to be found).
I'd also like to avoid putting *.bmp files in /usr/bin

While asking on irc last night, someone mentioned a decent way to load
images from a memory stream for the c++ version of wxw being:

wxMemoryInputStream image_stream(arg_data, arg_size);
wxImage img(image_stream, wxBITMAP_TYPE_PNG);

I couldn't find the MemoryInputStream in the API list, and the only
thing similar to that constructor takes an IntPtr (which I'm not 100%
sure how to convert anything to)

So what I'm actually asking:

Is there currently a way to do this? Is there a way that just hasn't
been checked in to CVS yet? Or is there a good place for me to start
patching? I'm not entirely sure how to convert a C# Stream to a C++/wx
Stream, so if it someone could nudge me in the right direction, I'd
appreciate it.

Thanks,
nummish

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