Tim Golden schrieb:
> On 05/05/2010 20:33, Thomas Heller wrote:
>> Does someone have example code snippets how to walk the shell namespace in
>> Python?
>> I'm lost in all these pidls and folders.
>
> The code below uses the pywin32 functions to walk. Because there's all
> sorts of things which can happen, I've implemented a v. broad except:
> clause just to keep things going. Since this uses the pywin32 wrappers,
> it's hiding a certain amount of the PIDL/SHITEM stuff, but the functions
> are pretty much the underlying win32 ones.
>
> One thing I don't know how to do without using comtypes is to find the parent.
> the SHBindToParent function would be the way to go but it's not exposed and
> I don't have the energy to set up all the comtypes boilerplate to make it
> happen:
> I'm sure you can manage, though :)
>
> http://msdn.microsoft.com/en-us/library/bb762114%28VS.85%29.aspx
Thanks Tim, your script gave me a good start.
It seems that pywin32 wraps pidls as list of strings, so getting the parent
is as simple as removing the last part:
>>> from win32com.shell.shell import *
>>> from win32com.shell.shellcon import *
>>> desktop = SHGetDesktopFolder()
>>> desktop.ParseDisplayName(0, None, r"c:\python26\lib\site-packages")
(0, ['\x1fP\xe0O\xd0 \xea:i\x10\xa2\xd8\x08\x00+00\x9d',
'/C:\\\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0
0\x00\x00',
'1\x00\x00\x00\x00\x00\x9c<\xb82\x10\x00Python26\x00\x00(\x00\x03\x00\x04\x00\xef\xbe\x97:\x108\x9c<\xb82\x14\x00\x00\
x00P\x00y\x00t\x00h\x00o\x00n\x002\x006\x00\x00\x00\x18\x00',
'1\x00\x00\x00\x00\x00\x9d<\x02D\x10\x00Lib\x00\x1e\x00\x03\x00\x04\
x00\xef\xbe\xfb:eQ\x9d<\x02D\x14\x00\x00\x00L\x00i\x00b\x00\x00\x00\x12\x00',
'1\x00\x00\x00\x00\x00\x9c<\xafD\x10\x00SITE-P~1\x00
\x002\x00\x03\x00\x04\x00\xef\xbe\xfb:uQ\x9c<\xafD\x14\x00\x00\x00s\x00i\x00t\x00e\x00-\x00p\x00a\x00c\x00k\x00a\x00g\x00e\x00s\x0
0\x00\x00\x18\x00'], 0)
>>> eaten, pidl, attr = desktop.ParseDisplayName(0, None,
>>> r"c:\python26\lib\site-packages")
>>> desktop.GetDisplayNameOf(pidl, SHGDN_FORPARSING)
u'C:\\Python26\\Lib\\site-packages'
>>> desktop.GetDisplayNameOf(pidl[:-1], SHGDN_FORPARSING)
u'C:\\Python26\\Lib'
>>> desktop.GetDisplayNameOf(pidl[:-2], SHGDN_FORPARSING)
u'C:\\Python26'
>>> desktop.GetDisplayNameOf(pidl[:-3], SHGDN_FORPARSING)
u'C:\\'
>>> desktop.GetDisplayNameOf(pidl[:-4], SHGDN_FORPARSING)
u'::{20D04FE0-3AEA-1069-A2D8-08002B30309D}'
>>>
What I find strange if this:
>>> desktop.GetDisplayNameOf(pidl, SHGDN_FORPARSING)
u'C:\\Python26\\Lib\\site-packages'
>>> desktop.GetDisplayNameOf(pidl, SHGDN_NORMAL)
u'Python26'
>>>
I would have expected that the last command would have returned
'site-packages' instead of 'Python26'. But I can probably work around
it by doing a little parsing on the output of SHGDN_FORPARSING myself.
--
Thanks again,
Thomas
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