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stop desktop background being changed?

 
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help101
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PostPosted: Sun Mar 14, 2010 4:33 am    Post subject: stop desktop background being changed? Reply with quote
Hi,

I'm trying to make a script which stops the desktop background being changed, or reverts it immediately when it does.

Any ideas?

Thanks!
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None



Joined: 28 Nov 2009
Posts: 3086
PostPosted: Sun Mar 14, 2010 5:51 am    Post subject: Reply with quote
Quote:
; Example: Changes the desktop wallpaper to the specified bitmap (.bmp) file.

DllCall("SystemParametersInfo", UInt, 0x14, UInt, 0, Str, A_WinDir . "\winnt.bmp", UInt, 2)

Googled SystemParametersInfo and found
Quote:
SPI_GETDESKWALLPAPER Retrieves the full path of the bitmap file for the desktop wallpaper. The pvParam parameter must point to a buffer to receive the NULL-terminated path string. Set the uiParam parameter to the size, in characters, of the pvParam buffer. The returned string will not exceed MAX_PATH characters. If there is no desktop wallpaper, the returned string is empty.

But I don't know how to make this into a Dll Call that checkes what the current desktop is Sad
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None



Joined: 28 Nov 2009
Posts: 3086
PostPosted: Sun Mar 14, 2010 8:12 am    Post subject: Reply with quote
Found a Reg Key Smile
Code:
RegRead, Var, HKEY_CURRENT_USER, Control Panel\Desktop , Wallpaper
MsgBox % Var

You could Make a Loop with this checking the current Wallpaper and the Above DllCall Changing it back if Changed
Proably should do a RegWrite also because the DllCall Does not change the Key's value Sad

Decided to try it (Tested on XP)
Code:
DeskTopFile:=A_WinDir . "\zapotec.bmp"

Loop
{
RegRead, Var, HKEY_CURRENT_USER, Control Panel\Desktop , Wallpaper
If (Var<>DeskTopFile)
  {
  DllCall("SystemParametersInfo", UInt, 0x14, UInt, 0, Str, DeskTopFile, UInt, 2)
  RegWrite, REG_SZ, HKEY_CURRENT_USER, Control Panel\Desktop , Wallpaper, %DeskTopFile%
  }
Sleep 2000
}

Edit: Added Code
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closed



Joined: 07 Feb 2008
Posts: 509
PostPosted: Sun Mar 14, 2010 8:16 pm    Post subject: Reply with quote
you can set a policy by creating the reg entries:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\policies\ActiveDesktop]
"NoChangingWallPaper"=dword:00000001
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