Ok, it's clear now. Thanks for the great support!
-- Marcel
On Jun 15, 9:21 pm, Dino Viehland wrote:
> Marcel wrote:
> > Thanks Dino, the ctypes.memmove does work!
>
> > I wasn't aware that ctypes could be used in IronPython. Do they
> > marshal to unmanaged code under the hood?
>
> There's not
On Tue, Jun 15, 2010 at 9:21 PM, Dino Viehland wrote:
>
> For the 2 IntPtr cases there's no overloads on Marshal and I don't believe
> anywhere in .NET.
Yes, this is my mistake. I think I saw the [IntPtr[], int, IntPtr,
int] overload and mentally elided the first array specifier.
-Curt
_
Marcel wrote:
> Thanks Dino, the ctypes.memmove does work!
>
> I wasn't aware that ctypes could be used in IronPython. Do they
> marshal to unmanaged code under the hood?
There's not really any unmanaged code on *our* side involved at all. It
all turns into .NET's support for interop. So we'll
mmove(0, bytes, total_bytes)
>
>
>
> > -Original Message-
> > From: users-boun...@lists.ironpython.com [mailto:users-
> > boun...@lists.ironpython.com] On Behalf Of Marcel
> > Sent: Monday, June 14, 2010 6:21 PM
> > To: us...@lists.ironpython.com
> >
From: users-boun...@lists.ironpython.com [mailto:users-
> boun...@lists.ironpython.com] On Behalf Of Marcel
> Sent: Monday, June 14, 2010 6:21 PM
> To: users@lists.ironpython.com
> Subject: Re: [IronPython] Convert between python array and .NET Array
>
> Hi Curt,
>
> I did try that ove
Hi Curt,
I did try that overload but I get this quite amusing error message:
TypeError: Copy() takes at least 2147483647 arguments (4 given)
Without the explicit overload selection, I get:
TypeError: expected IntPtr, got int
Did the example work for you with the overload you suggested?
The reas
Ah, I'm clearly not familiar with how the array type was implemented. The
first member of the buffer_info() tuple is an IntPtr, so you probably want
the [IntPtr, int, IntPtr, int] overload of Marshal.Copy. In fact, if you use
the buffer_info() approach, you may be able to avoid manually specifying
Hi Curt,
Your suggestion gives me:
TypeError: expected Array[Byte], got array
bytes is a Python array. I tried:
Marshal.Copy.Overloads[Array[Byte], int, IntPtr, int]
(bytes.buffer_info()[0], 0, bmData.Scan0, total_bytes)
but that gave the error:
TypeError: expected Array[Byte], got int
This sma
It looks like the automatic overload resolution may be failing -- at least,
it's worth trying to resolve the overload manually. This would be something
like
from System import Array, Byte, IntPtr
Marshal.Copy.Overloads[Array[Byte], int, IntPtr, int](bytes, 0,
bmData.Scan0, total_bytes)
On Sat, J
I think I simplified my example a little too far. I'm trying to
display a Bitmap from bytes generated in Python code.
bytes = array.array('c') # tried 'B' also
# generate bitmap bytes ...
bitmap = Bitmap(width, height, PixelFormat.Format24bppRgb)
bmData = bitmap.L
This worked for me (based on the code you provided):
import clr
from System import Array
dest = Array[str](bytes)
On Fri, Jun 11, 2010 at 9:51 PM, Marcel wrote:
> I have a python method that returns a Python byte array.array('c').
>
> Now, I want to copy this array using
> System.Runtime.Inte
I have a python method that returns a Python byte array.array('c').
Now, I want to copy this array using
System.Runtime.InteropServices.Marshal.Copy. This method however
expects a .NET Array.
import array
from System.Runtime.InteropServices import Marshal
bytes = array.array('c')
bytes.append('a
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