China DOS Union

Subject:

Monitor
Module: desk.cpl
Command: rundll32.exe shell32.dll,Control_RunDLL desk.cpl,,0
Result: Background settings.

The above one can't be directly modified... The following is for screen saver, depressed

Module: appwiz.cpl
Command: rundll32.exe desk.cpl,InstallScreenSaver c:\winnt\system\Flying Windows.scr
Result: Install screen saver and display preview property page.

For the rundll32.exe call commands that can be found on the network, they only can display a certain operation interface.
It has no effect on script automation...

Regarding the format of calling .dll functions in command line mode
and the information about the way of supporting parameterized calls is not found at all.

[ Last edited by tghksj on 2006-12-6 at 02:50 PM ]

Brother, you can refer to the content of the following post, which talks about changing the desktop background from the registry, refreshing the desktop, to using third-party tools~ :)

Changing Desktop Background
http://www.cn-dos.net/forum/viewthread.php?tid=24982&fpage=1&highlight=%E6%A1%8C%E9%9D%A2


Setting Background Desktop, Creating Shortcuts, Emptying Recycle Bin, Command-line Utilities
http://www.cn-dos.net/forum/viewthread.php?tid=23132&fpage=1&highlight=%E6%A1%8C%E9%9D%A2


How to "Refresh Desktop" and Reload "explorer.exe" Using Rundll32?
http://www.cn-dos.net/forum/viewthread.php?tid=24465&fpage=1&highlight=%E6%A1%8C%E9%9D%A2

[ Last edited by redtek on 2006-12-4 at 08:08 AM ]

RE redtek :

My idea is to use the function of rundll32.exe to call functions to achieve the purpose in a single line.
Because there is a function to replace the desktop background in user.dll, but there is no reaction when I call it in the command line with rundll32.exe.

The key of my problem is not "changing the desktop background" but how to achieve it through rundll32.exe.
Since rundll32.exe can call.dll functions, why can't batch processing use it for object-oriented programming like VB.VC?

I have already implemented and used batch processing with the help of third-party plugins. The code for borrowing MS's "automatic wallpaper change" is as follows
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
COPY bgswitch.dll %WINDIR%\SYSTEM32\
COPY bgswitch.exe %WINDIR%\SYSTEM32\
REGSVR32 /S bgswitch.dll
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\BackgroundManager /v "Directory" /t REG_SZ /d F:\Desktop Background\wallpaper /f
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\BackgroundManager /v "Refresh Unit" /t REG_DWORD /d 0 /f
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\BackgroundManager /v "Refresh Frequency" /t REG_DWORD /d 0 /f
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\BackgroundManager /v "Random" /t REG_DWORD /d 0 /f
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\BackgroundManager /v "Disabled" /t REG_DWORD /d 0 /f
REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\BackgroundManager /v "Force Stretch" /t REG_DWORD /d 0 /f
bgswitch
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Oh right, thank you for adding 5 points to my "TGHKSJ.CMD", heh heh :P

[ Last edited by tghksj on 2006-12-6 at 02:54 PM ]

Good stuff...

Bump, I also want to know the function of the API function

```
reg add "hkcu\control panel\desktop" /v TileWallpaper /d 0 /f
reg add "hkcu\control panel\desktop" /v Wallpaper /d %wallpaper% /f
reg add "hkcu\control panel\desktop" /v WallpaperStyle /d 2 /f
RunDll32.exe USER32.DLL,UpdatePerUserSystemParameters

%wallpaper% is a BMP file with a full path
```