Question

来自瑞典的Hej，

我正在尝试参考帖子中的代码：Powershell script to change screen Orientation

脚本有效。目标是确保旋转是横向 - 默认或纵向顺时针90度。

我需要将当前代码更改为仅允许2个值，或者确保脚本只运行一次。

无论哪种方式，我都需要知道为CDS_UPDATEREGISTRY存储注册表项的位置。虽然我无法弄清楚注册表中每个轮换的值更改是否存储在注册表中？

有没有人知道这些值存储在哪里？

代码：

Function Set-ScreenResolutionAndOrientation { 

<# 
    .Synopsis 
        Sets the Screen Resolution of the primary monitor 
    .Description 
        Uses Pinvoke and ChangeDisplaySettings Win32API to make the change 
    .Example 
        Set-ScreenResolutionAndOrientation         
#>

$pinvokeCode = @" 

using System; 
using System.Runtime.InteropServices; 

namespace Resolution 
{ 

    [StructLayout(LayoutKind.Sequential)] 
    public struct DEVMODE 
    { 
       [MarshalAs(UnmanagedType.ByValTStr,SizeConst=32)]
       public string dmDeviceName;

       public short  dmSpecVersion;
       public short  dmDriverVersion;
       public short  dmSize;
       public short  dmDriverExtra;
       public int    dmFields;
       public int    dmPositionX;
       public int    dmPositionY;
       public int    dmDisplayOrientation;
       public int    dmDisplayFixedOutput;
       public short  dmColor;
       public short  dmDuplex;
       public short  dmYResolution;
       public short  dmTTOption;
       public short  dmCollate;

       [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
       public string dmFormName;

       public short  dmLogPixels;
       public short  dmBitsPerPel;
       public int    dmPelsWidth;
       public int    dmPelsHeight;
       public int    dmDisplayFlags;
       public int    dmDisplayFrequency;
       public int    dmICMMethod;
       public int    dmICMIntent;
       public int    dmMediaType;
       public int    dmDitherType;
       public int    dmReserved1;
       public int    dmReserved2;
       public int    dmPanningWidth;
       public int    dmPanningHeight;
    }; 

    class NativeMethods 
    { 
        [DllImport("user32.dll")] 
        public static extern int EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE devMode); 
        [DllImport("user32.dll")] 
        public static extern int ChangeDisplaySettings(ref DEVMODE devMode, int flags); 

        public const int ENUM_CURRENT_SETTINGS = -1; 
        public const int CDS_UPDATEREGISTRY = 0x01; 
        public const int CDS_TEST = 0x02; 
        public const int DISP_CHANGE_SUCCESSFUL = 0; 
        public const int DISP_CHANGE_RESTART = 1; 
        public const int DISP_CHANGE_FAILED = -1;
        public const int DMDO_DEFAULT = 0;
        public const int DMDO_90 = 1;
        public const int DMDO_180 = 2;
        public const int DMDO_270 = 3;
    } 



    public class PrmaryScreenResolution 
    { 
        static public string ChangeResolution() 
        { 

            DEVMODE dm = GetDevMode(); 

            if (0 != NativeMethods.EnumDisplaySettings(null, NativeMethods.ENUM_CURRENT_SETTINGS, ref dm)) 
            {

                // swap width and height
                int temp = dm.dmPelsHeight;
                dm.dmPelsHeight = dm.dmPelsWidth;
                dm.dmPelsWidth = temp;

                // determine new orientation based on the current orientation
                switch(dm.dmDisplayOrientation)
                {
                    case NativeMethods.DMDO_DEFAULT:
                        dm.dmDisplayOrientation = NativeMethods.DMDO_270;
                        break;
                    case NativeMethods.DMDO_270:
                        dm.dmDisplayOrientation = NativeMethods.DMDO_180;
                        break;
                    case NativeMethods.DMDO_180:
                        dm.dmDisplayOrientation = NativeMethods.DMDO_90;
                        break;
                    case NativeMethods.DMDO_90:
                        dm.dmDisplayOrientation = NativeMethods.DMDO_DEFAULT;
                        break;
                    default:
                        // unknown orientation value
                        // add exception handling here
                        break;
                }


                int iRet = NativeMethods.ChangeDisplaySettings(ref dm, NativeMethods.CDS_TEST); 

                if (iRet == NativeMethods.DISP_CHANGE_FAILED) 
                { 
                    return "Unable To Process Your Request. Sorry For This Inconvenience."; 
                } 
                else 
                { 
                    iRet = NativeMethods.ChangeDisplaySettings(ref dm, NativeMethods.CDS_UPDATEREGISTRY); 
                    switch (iRet) 
                    { 
                        case NativeMethods.DISP_CHANGE_SUCCESSFUL: 
                            { 
                                return "Success"; 
                            } 
                        case NativeMethods.DISP_CHANGE_RESTART: 
                            { 
                                return "You Need To Reboot For The Change To Happen.\n If You Feel Any Problem After Rebooting Your Machine\nThen Try To Change Resolution In Safe Mode."; 
                            } 
                        default: 
                            { 
                                return "Failed To Change The Resolution"; 
                            } 
                    } 

                } 


            } 
            else 
            { 
                return "Failed To Change The Resolution."; 
            } 
        } 

        private static DEVMODE GetDevMode() 
        { 
            DEVMODE dm = new DEVMODE(); 
            dm.dmDeviceName = new String(new char[32]); 
            dm.dmFormName = new String(new char[32]); 
            dm.dmSize = (short)Marshal.SizeOf(dm); 
            return dm; 
        } 
    } 
} 

"@ 

Add-Type $pinvokeCode -ErrorAction SilentlyContinue 
[Resolution.PrmaryScreenResolution]::ChangeResolution() 
}

Set-ScreenResolutionAndOrientation

Answer 1

<#
   0 = Default
   1 = 90°Left (Counter-Clockwise)
   2 = 180°
   3 = 270° (90°Right Clockwise)
#>

通过在ChangeResolution（0）中添加值0,1,2,3作为参数，该函数将使脚本能够定义纵向或横向。

Answer 2

如果要修改屏幕方向，只需转到：

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ GraphicsDrivers \ Configuration

您将在此处看到到目前为止已连接的每台显示器，因此请打开所有显示器。您将找到一个标记为“ 00”的文件夹。还要打开它们，您还将找到一个也名为“ 00”的子文件夹（请记住，对于每个显示器，都会有这种文件夹和子文件夹）

搜索标记为“ Rotation”的键，您会注意到它的数据设置为1，这是默认值。在下面，您可能会看到与相应屏幕方向有关的数据：

1 =风景

2 =肖像

3 =风景（翻转）

4 =肖像（翻转）

使用powershell更改屏幕方向 - 存储注册表值的位置在哪里？

2 个答案: