改变显示器的分辨率代码,CSharp代码库,德仔网

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【CSharp】改变显示器的分辨率
作者:孟宪会 / 发布于2011/5/3/ 948
<div><!--StartFragment-->using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;

namespace ScreenResolution
{

 public class Form1 : System.Windows.Forms.Form
 {
 public enum DMDO
 {
 DEFAULT = 0,
 D90 = 1,
 D180 = 2,
 D270 = 3
 }

 [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
 struct DEVMODE
 {
 public const int DM_DISPLAYFREQUENCY = 0x400000;
 public const int DM_PELSWIDTH = 0x80000;
 public const int DM_PELSHEIGHT = 0x100000;
 private const int CCHDEVICENAME = 32;
 private const int CCHFORMNAME = 32;

 [MarshalAs(UnmanagedType.ByValTStr, SizeConst=CCHDEVICENAME)]
 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 DMDO dmDisplayOrientation;
 public int dmDisplayFixedOutput;

 public short dmColor;
 public short dmDuplex;
 public short dmYResolution;
 public short dmTTOption;
 public short dmCollate;
 [MarshalAs(UnmanagedType.ByValTStr, SizeConst=CCHFORMNAME)]
 public string dmFormName;
 public short dmLogPixels;
 public int 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;
 }

 [DllImport("user32.dll", CharSet=CharSet.Auto)]
 //static extern int ChangeDisplaySettings( DEVMODE lpDevMode, int dwFlags);

 static extern int ChangeDisplaySettings( [In] ref DEVMODE lpDevMode, int dwFlags);
 private System.ComponentModel.Container components = null;
 public Form1()
 {
 InitializeComponent();
 }
 protected override void Dispose( bool disposing )
 {
 if( disposing )
 {
 if (components != null)
 {
 components.Dispose();
 }
 }
 base.Dispose( disposing );
 }

 #region Windows Form Designer generated code
 private void InitializeComponent()
 {
 this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
 this.ClientSize = new System.Drawing.Size(292, 273);
 this.Text = "改变屏幕分辨率的例子";

 }
 #endregion

 static void Main()
 {
 Form1 r = new Form1();
 r.ChangeRes();
 Application.Run(new Form1());
 }

 void ChangeRes()
 {
 Form1 t = new Form1();
 long RetVal=0;
 DEVMODE dm = new DEVMODE();
 dm.dmSize= (short)Marshal.SizeOf(typeof(DEVMODE));
 dm.dmPelsWidth = 1024;
 dm.dmPelsHeight= 768;
 dm.dmDisplayFrequency=85;
 dm.dmFields = DEVMODE.DM_PELSWIDTH | DEVMODE.DM_PELSHEIGHT | DEVMODE.DM_DISPLAYFREQUENCY;
 RetVal = ChangeDisplaySettings(ref dm, 0);
 }
 }
}
</div>
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