Dublanc, David wrote:
>
>I use this script (that I found in the newsgroup) and the result is
>not correct. Is it possible to use Windows DLL libraries library in
>Python ? Because there is a
>GetDiskFreeSpaceEx that seems to return the good results (thanks to
>Chris Gonnerman who gives me the name of this function).
There's the 'calldll' module, which I got from:
ftp://squirl.nightmare.com/pub/python/python-ext/calldll-python-2.0.zip
The documentation is rather terse, so it took a bit of experimenting to
get it to work properly. The tricky bits are getting data to and from
the dll-function, and a mistake there could really lead to spectacular
crashes: I merely got away with some access violations, and crashing
Python itself a couple of times. Much of the trouble came from the fact
that I couldn't get the membuf-object to work. However, using a Python
character array solved it. It helps if you read the chapter in the
Python manuals about C-extensions, because it uses Python's own
parameter passing system.
Anyway, as an example, here's some of the code I came up with to
interface with a .dll. It's not supposed to be an example of good
style, but it works. The dll-function expects the address of a buffer
filled with data, modifies it in-place, and returns an integer (0 ==
success). The "w" and the "i" 'in call_foreign_function' reflect this.
HTH,
Robert Amesz
- - -
import array, string, sys
import calldll
# Compress Xface data
def MakeXface(xface):
# Fill buffer, make it 2K & pad with \0's
buf = array.array('c', xface + '\0' * (2000 - len(xface)))
# DLL-interface
calldll.load_library('X-Face.dll')
handle = calldll.get_module_handle('X-Face.dll')
address = calldll.get_proc_address(handle, '_compface')
# Compress X-Face
if calldll.call_foreign_function(address, "w", "i", (buf,)):
return None
return buf
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4