如何修复RUNDLL32.EXE user32.dll，UpdatePerUserSystemParameters 1，true不会每次更新

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问题描述

我看过此StackOverflow 文章和同样的事情也适用于我.为什么RUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters 1, True每次都不工作?还有其他方法可以使它起作用，而不是重复进行直到其起作用，或者是否有某种方法对其进行编码以使其起作用? .cmd，.bat和.ps1很好)，或者是多次运行它以使其正常工作的最佳/唯一方法

I have had a look at this StackOverflow article and the same thing applies to me. Why is it that RUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters 1, True does not work everytime? Is there some other way to make it work rather than repeating that until it works or is there some way to code it so that it works? .cmd , .bat and .ps1 is fine) Or is the best/only way to run it alot of times so that it works

现在，我的解决方案是多次运行直到运行.是否有其他方法可以刷新桌面墙纸而无需多次运行RUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters 1, True?

Right now my solution is to just run that multiple time until it works. Is there any other way to refresh the desktop wallpaper without running RUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters 1, True alot of times?

尽管这是2001年的文档，但已从当前版本中删除.

Although this is from the 2001 documentation and has been removed from current.

REM ChangeWallpaper.bat
REM Compiles ChangeWallpaper.vb to ChangeWallpaper.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc "%~dp0\ChangeWallpaper.vb" /out:"%~dp0\ChangeWallpaper.exe" /target:winexe
pause

;ChangeWallpaper.vb
Imports System.Runtime.InteropServices

Public Module ChangeWallpaper
    Public Declare Unicode Function SystemParametersInfoW Lib "user32" (ByVal uAction As Integer, ByVal uParam As Integer, ByVal lpvParam As String, ByVal fuWinIni As Integer) As Integer
    Public Const SPI_SETDESKWALLPAPER = 20
    Public Const SPIF_SENDWININICHANGE = &H2
    Public Const SPIF_UPDATEINIFILE = &H1

Public Sub Main()    
    Dim Ret as Integer
    Dim FName As String
    Fname = "C:\Windows\Web\Wallpaper\Theme1\img1.jpg"
    'This below line which is commented out takes a filename on the command line
    'FName = Replace(Command(), """", "")

    Ret = SystemParametersInfoW(SPI_SETDESKWALLPAPER, 0, FName, SPIF_SENDWININICHANGE + SPIF_UPDATEINIFILE)
    If Ret = 0 Then Msgbox(err.lastdllerror)
End Sub

End Module

代码在这里 https://winsourcecode.blogspot.com/2019/06/changewallpaper.html

更新

这是使用它的问题

     Declare Function UpdatePerUserSystemParameters Lib "User32.dll" (ByVal i As Long, ByVal b As Boolean) As long

正如您从文章中看到的那样，Rundll32为j传递了一个hwnd(可能是0，表示Desktop是父级)，而RunDll32的HInst作为了b的布尔值，因此它将是非零值.视为真实.

As you can see from the article Rundll32 is passing a hwnd (probably 0 to say Desktop is the parent) for j and RunDll32's HInst as a Boolean for b, and as this will be non zero it will be treated as true.

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is

如何修复RUNDLL32.EXE user32.dll，UpdatePerUserSystemParameters 1，true不会每次更新

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