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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Error with Enum GCHandleType.Pinned","articleBody":"Hello,\n\nI try to use the following snippet [from this page](https://mail.python.org/pipermail/pythondotnet/2014-May/001525.html) to turn a `byte[]` into a numpy array:\n\n``` python\nfrom ctypes import string_at\nclr.AddReference(\"System.Runtime.InteropServices\")\nfrom System.Runtime.InteropServices import GCHandle, GCHandleType\n\nhandler = GCHandle.Alloc(CSArray, GCHandleType.Pinned)\ntry:\n    pointer = handler.AddrOfPinnedObject().ToInt32()\n    dest = np.fromstring(string_at(pointer, len(CSArray))) \nfinally:\n    if handler.IsAllocated: handler.Free()\n```\n\nOn this line:\n\n``` python\nhandler = GCHandle.Alloc(CSArray, GCHandleType.Pinned)\n```\n\nI get the following error: `TypeError: No method matches given arguments`\n\nExecuting this code:\n\n``` python\nhandler = GCHandle.Alloc(CSArray)\n```\n\nbrings no error, so I assume that the issue must be from `GCHandleType.Pinned`.\n\nI'm a bit troubled by: \n\n``` python\nprint(type(GCHandleType.Pinned))\n\u003e\u003e\u003eint\nprint(GCHandleType.Pinned)\n\u003e\u003e\u003e3\n```\n\nIs it normal that `enum`are modeled by `int`?\n\nAnyway, I can't get to have my code working...\n","author":{"url":"https://github.com/aPere3","@type":"Person","name":"aPere3"},"datePublished":"2016-03-03T11:00:20.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":19},"url":"https://github.com/174/pythonnet/issues/174"}