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online repository of stuff I had to google for hours to figure out – and random snippets of code

Simple Python ctypes Example – in Windows

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I found this blog post, Simple Python ctypes Example, on Reddit, and thought I’d see how different the procedure was for Windows.

What you’ll need:

Creating the DLL

Create a file dlltest.c with the following content:

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#include <windows.h>

BOOL APIENTRY DllMain(HANDLE hModule, DWORD dwReason, LPVOID lpReserved)
{
return TRUE;
}

__declspec(dllexport) int
multiply(int num1, int num2)
{
return num1 * num2;
}

Start the Visual Studio 2008 Command Prompt from the Start Menu (this sets up the path for the compiler and other files, which makes things easier) and go to the directory you saved dlltest.c to.

Compile it with the following command:

cl -LD dlltest.c -Fetest.dll

Testing the DLL

As in the original Linux example, this DLL is easily tested using similar commands:

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>>> from ctypes import *
>>> libtest = cdll.LoadLibrary('test.dll')
>>> print libtest.multiply(2, 2)
4

So, that is the simplest DLL possible, I’ll look at (same as the original blog post) applying it to more complex examples later.

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PC-like Norwegian keyboard layout for Windows on Mac

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Here’s a quick keyboard layout for 32bit/64bit Windows in BootCamp, which puts all the keys at their “PC Keyboard” positions in Norwegian.

(The default Mac layout has horrible finger-gymnastics to get “{[]}” and other often used programming keys)

NoMac.zip

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Patched libgmail for unicode handling

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libgmail 0.1.11 has a bug with unicode handling, when the sender of an email has a name with one or more non-ASCII character in it.

I’ve applied the patch I described in the link above, adding the function:

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def to_unicode(xstr):
    '''
    Forces string to unicode
    '''

    if type(xstr) == unicode:
        return xstr
    elif type(xstr) == str:
        return xstr.decode('utf-8')
    else:
        return xstr

And changed all calls to var.decode(‘utf-8′) to to_unicode(var).

libgmail-0.1.11p1.zip (source package)
libgmail-0.1.11p1.win32.exe (win32 installer)

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