using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace 解決分辨率
{
??? public partial class Form1 : Form
??? {
??????? //保存當(dāng)前屏幕分辨率
??????? int i = Screen.PrimaryScreen.Bounds.Width;
int j = Screen.PrimaryScreen.Bounds.Height;
??????? public Form1()
??????? {
??????????? InitializeComponent();
??????? }
??????? [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
??????? 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 short dmOrientation;
??????????? public short dmPaperSize;
??????????? public short dmPaperLength;
??????????? public short dmPaperWidth;
??????????? public short dmScale;
??????????? public short dmCopies;
??????????? public short dmDefaultSource;
??????????? public short dmPrintQuality;
??????????? 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 int dmBitsPerPel;
??????????? public int dmPelsWidth;
??????????? public int dmPelsHeight;
??????????? public int dmDisplayFlags;
??????????? public int dmDisplayFrequency;
??????? }
??????? [DllImport("user32.dll", CharSet = CharSet.Auto)]
??????? static extern int ChangeDisplaySettings([In] ref DEVMODE lpDevMode, int dwFlags);
??????? [DllImport("user32.dll", CharSet = CharSet.Auto)]
??????? static extern bool EnumDisplaySettings(string lpszDeviceName, Int32 iModeNum, ref DEVMODE lpDevMode);
??????? void ChangeRes()
??????? {

??????????? DEVMODE DevM = new DEVMODE();
??????????? DevM.dmSize = (short)Marshal.SizeOf(typeof(DEVMODE));
??????????? bool mybool;
??????????? mybool = EnumDisplaySettings(null, 0, ref DevM);
??????????? DevM.dmPelsWidth = 1024;//寬
??????????? DevM.dmPelsHeight = 768;//高
??????????? DevM.dmDisplayFrequency = 60;//刷新頻率
??????????? DevM.dmBitsPerPel = 32;//顏色象素
??????????? long result = ChangeDisplaySettings(ref DevM, 0);
??????? }
??????? void FuYuan()
??????? {
??????????? DEVMODE DevM = new DEVMODE();
??????????? DevM.dmSize = (short)Marshal.SizeOf(typeof(DEVMODE));
??????????? bool mybool;
??????????? mybool = EnumDisplaySettings(null, 0, ref DevM);
??????????? DevM.dmPelsWidth = i;//恢復(fù)寬
??????????? DevM.dmPelsHeight =j;//恢復(fù)高
??????????? DevM.dmDisplayFrequency = 60;//刷新頻率
??????????? DevM.dmBitsPerPel = 32;//顏色象素
??????????? long result = ChangeDisplaySettings(ref DevM, 0);
??????? }
??????? private void Form1_Load(object sender, EventArgs e)
??????? {
??????????? ChangeRes();
??????? }

??????? private void button1_Click(object sender, EventArgs e)
??????? {
??????????? FuYuan();
??????????? this.Close();
?????????
??????? }