Powershell - 使桌面背景更改立即生效

Question

我正在運行一個PowerShell腳本來將背景更改爲某一組顏色。我想在不重新啓動的情況下執行此操作，但不幸的是，無法立即在Windows 7/8平臺上使更改立即生效。我在網上發現了很多解決方案，但我找不到適合自己的解決方案。我想這可能與設置SystemParametersInfo有關，但我不確定。我已經看到了一些解決方案併爲自己嘗試過，但是我也無法讓它們工作。註冊表項更新只是查找，但更改不會生效，直到我重新啓動後。以下是我迄今爲止，如果有人看到任何我可以做不同的事情，我會感謝幫助！

backgroundtest.ps1

Add-Type @" 
using System; 
using System.Runtime.InteropServices; 
using Microsoft.Win32; 


namespace Background 
{ 
    public class Setter { 
     [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] 
     private static extern int SystemParametersInfo(int uAction, int uParm, string lpvParam, int fuWinIni); 
     public const int UpdateIniFile = 0x01; 
     public const int SendWinIniChange = 0x02; 
     public const int SetDesktopBackground = 20; <# following examples online to set parameters #> 

     public static void SetBackground() { 
      SystemParametersInfo(SetDesktopBackground, 0, "", UpdateIniFile | SendWinIniChange); 
      RegistryKey key = Registry.CurrentUser.OpenSubKey("Control Panel\\Desktop", true); 
      key.SetValue(@"WallPaper", 0); <#remove wallpaper#> 
      RegistryKey key2 = Registry.CurrentUser.OpenSubKey("Control Panel\\Colors", true); 
      key2.SetValue(@"Background", "0 118 163"); <#set background to new color> 
      key.Close(); 
      key2.Close(); 
     } 

    } 


} 

"@ 

[Background.Setter]::SetBackground() 

Answer 1

的記錄方式來改變系統的顏色是SetSysColors功能。

這會將WM_SYSCOLORCHANGE消息發送到所有頂級窗口，以通知其更改。

我已更新您的班級以清除背景並將顏色設置爲紫色。它需要複製到PowerShell中。請注意，我聲明SetSysColors的方式一次只能更改一種顏色。

public class Setter { 
    [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] 
    private static extern int SystemParametersInfo(int uAction, int uParm, string lpvParam, int fuWinIni); 
    [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] 
    private static extern int SetSysColors(int count, [In] ref int index, [In] ref int colour); 

    public const int UpdateIniFile = 0x01; 
    public const int SendWinIniChange = 0x02; 
    public const int SetDesktopBackground = 20; 
    public const int COLOR_BACKGROUND = 1; 

    public static void SetBackground() { 
     SystemParametersInfo(SetDesktopBackground, 0, "", UpdateIniFile | SendWinIniChange); 
     int index = COLOR_BACKGROUND; 
     int colour = 0xFF00FF; 
     SetSysColors(1, ref index, ref colour); 
    } 
} 

Answer 2

昨天是我第一次參加Powershell的體驗，我很迷茫，因爲我需要做的事情。爲了將桌面背景更改爲純色，您首先需要移除牆紙，然後使用SetSysColors功能立即更改桌面背景。這個鏈接幫了我很大的忙。 http://gallery.technet.microsoft.com/scriptcenter/Change-window-borderdesktop-609a6fb2

希望這可以幫助別人以同樣的方式幫助我。

更新的代碼

$code = @' 
using System; 
using System.Drawing; 
using System.Runtime.InteropServices; 
using Microsoft.Win32; 


namespace Background 
{ 
    public class Setter { 
     [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] 
     private static extern int SystemParametersInfo(int uAction, int uParm, string lpvParam, int fuWinIni); 
     [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError =true)] 
     private static extern int SetSysColors(int cElements, int[] lpaElements, int[] lpRgbValues); 
     public const int UpdateIniFile = 0x01; 
     public const int SendWinIniChange = 0x02; 
     public const int SetDesktopBackground = 0x0014; 
     public const int COLOR_DESKTOP = 1; 
     public int[] first = {COLOR_DESKTOP}; 


     public static void RemoveWallPaper() { 
     SystemParametersInfo(SetDesktopBackground, 0, "", SendWinIniChange | UpdateIniFile); 
     RegistryKey key = Registry.CurrentUser.OpenSubKey("Control Panel\\Desktop", true); 
     key.SetValue(@"WallPaper", 0); 
     key.Close(); 
     } 

     public static void SetBackground(byte r, byte g, byte b) { 
      RemoveWallPaper(); 
      System.Drawing.Color color= System.Drawing.Color.FromArgb(r,g,b); 
      int[] elements = {COLOR_DESKTOP}; 
      int[] colors = { System.Drawing.ColorTranslator.ToWin32(color) }; 
      SetSysColors(elements.Length, elements, colors); 
      RegistryKey key = Registry.CurrentUser.OpenSubKey("Control Panel\\Colors", true); 
      key.SetValue(@"Background", string.Format("{0} {1} {2}", color.R, color.G, color.B)); 
      key.Close(); 

     } 

    } 


} 

'@ 
Add-Type -TypeDefinition $code -ReferencedAssemblies System.Drawing.dll -PassThru 
Function Set-OSCDesktopColor 
{ 
    <# Powershell function to remove desktop background and set background to colors we want #> 
    Process 
    { 
     [Background.Setter]::SetBackground(0,118,163) 
     return 
    } 
} 

Set-OSCDesktopColor 

Answer 3

我抓住Wheatfairies碼，修改它，並在出版（帶署名）到PowerShell的畫廊： https://www.powershellgallery.com/packages/Set-DesktopBackGround/1.0.0.0/DisplayScript

所以現在每個人都可以只輸入： 安裝腳本-Name Set-DesktopBackGround

得到它。

乾杯！