实例介绍
【实例简介】c# 读取分辨率并 拖动设置分辨率功能
【实例截图】
【核心代码】
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 | 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;//Download by http://www.codefans.netnamespace 设置屏幕分辨率{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } public const uint WM_SYSCOMMAND = 0x0112; public const uint SC_MONITORPOWER = 0xF170; [DllImport("user32")] public static extern IntPtr SendMessage(IntPtr hWnd, uint wMsg, uint wParam, int lParam); 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; public const int DM_BITSPERPEL = 262144; 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([In] ref DEVMODE lpDevMode, int dwFlags); int dWidth = 0; int dHeight = 0; private void GetDis()//获取分辨率 { Size s = SystemInformation.PrimaryMonitorSize; dWidth = s.Width; dHeight = s.Height; lblDisInfo.Text = dWidth.ToString() " × " dHeight.ToString() " 像素"; } private void Form1_Load(object sender, EventArgs e) { GetDis(); ChangeDis(1); } private void ChangeDis(int i)//变换分辨率 { int dValue; dValue = trackBar1.Value; if (i == 0) { switch (dValue) { case 0: dWidth = 800; dHeight = 600; break; case 1: dWidth = 1024; dHeight = 768; break; case 2: dWidth = 1152; dHeight = 864; break; case 3: dWidth = 1280; dHeight = 600; break; case 4: dWidth = 1280; dHeight = 720; break; case 5: dWidth = 1280; dHeight = 768; break; case 6: dWidth = 1280; dHeight = 760; break; case 7: dWidth = 1280; dHeight = 1024; break; case 8: dWidth = 1400; dHeight = 1050; break; case 9: dWidth = 1600; dHeight = 900; break; case 10: dWidth = 1600; dHeight = 1200; break; } lblDisInfo.Text = dWidth.ToString() " × " dHeight.ToString() " 像素"; } else { int dSum = dWidth dHeight; switch (dSum) { case 1400: trackBar1.Value = 0; break; case 1792: trackBar1.Value = 1; break; case 2016: trackBar1.Value = 2; break; case 1880: trackBar1.Value = 3; break; case 2000: trackBar1.Value = 4; break; case 2048: trackBar1.Value = 5; break; case 2240: trackBar1.Value = 6; break; case 2304: trackBar1.Value = 7; break; case 2450: trackBar1.Value = 8; break; case 2500: trackBar1.Value = 9; break; case 2800: trackBar1.Value = 10; break; } } } private void trackBar1_Scroll(object sender, EventArgs e) { ChangeDis(0); } private void button1_Click(object sender, EventArgs e) { long RetVal = 0; DEVMODE dm = new DEVMODE(); dm.dmSize = (short)Marshal.SizeOf(typeof(DEVMODE)); dm.dmPelsWidth = dWidth;//宽 dm.dmPelsHeight = dHeight;//高 dm.dmDisplayFrequency = 85;//刷新率 dm.dmFields = DEVMODE.DM_PELSWIDTH | DEVMODE.DM_PELSHEIGHT | DEVMODE.DM_DISPLAYFREQUENCY | DEVMODE.DM_BITSPERPEL; RetVal = ChangeDisplaySettings(ref dm, 0); } }} |
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