teh_sAbEr wrote:
Hi everybody. I'm trying to write a script that'll change desktop
wallpaper every time its run. Heres what I've gotten so far:
#random wallpaper changer!
import _winreg
from os import walk
from os.path import exists
from random import randint
#first grab a registry handle.
handle = _winreg.OpenKey(_winreg.HKEY_CURRENT_USER,'Control Panel
\Desktop',_winreg.KEY_SET_VALUE)
def GenerateListOfWallpapers():
targetDir = 'C:\Documents and Settings\Enrico Jr\My Documents\Jr
\'s Wallpapers'
fileNames = []
filePaths = []
if exists(targetDir):
#proceed to make the list of files
for x,y,z in walk(targetDir):
for name in z:
fileNames.append(name)
for item in fileNames:
filePaths.append(targetDir + '\\' + item)
return filePaths
def RandomlySelectWallpaper(filePaths):
index = randint(0,len(filePaths)-1)
RandomlySelectedWallpaper = filePaths[index]
return RandomlySelectedWallpaper #it should be a string...
#now to edit the wallpaper registry key
newWallpaper = RandomlySelectWallpaper(GenerateListOfWallpapers())
print "Registry Handle Created."
print "Random wallpaper selected."
_winreg.SetValueEx(handle,'ConvertedWallpaper',
0,_winreg.REG_SZ,newWallpaper)
print "New wallpaper value set."
The problem is, every time I run it, I get an "Access Denied" error
when it tries to execute
_winreg.SetValueEx(), even though i've opened the key with the
KEY_SET_VALUE mask like it said in the help docs. Could there be
another problem or a better way to do this?
Common error. You have to open the key so that it can be written as follows:
reg = _winreg.HKEY_CURRENT_USER
key = r'Control Panel\Desktop'
handle = _winreg.OpenKey(reg, key, 0, _winreg.KEY_WRITE)
Note: be careful with backslashes (\) in non-raw strings they will be
interpreted as escaped sequences. You were lucky because \D doesn't
represent anything escaped. You should either use r's\gg\gg' or use double
backslashes 's\\gg\\gg'.
-Larry
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