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【源码截图】

【源码示例】

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 取色值{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } [DllImport("gdi32.dll")] static public extern uint GetPixel(IntPtr hDC, int XPos, int YPos); [DllImport("gdi32.dll")] static public extern IntPtr CreateDC(string driverName, string deviceName, string output, IntPtr lpinitData); [DllImport("gdi32.dll")] static public extern bool DeleteDC(IntPtr DC); string r=""; string g = ""; string b = ""; static public byte GetRValue(uint color) { return (byte)color; } static public byte GetGValue(uint color) { return ((byte)(((short)(color)) >> 8)); } static public byte GetBValue(uint color) { return ((byte)((color) >> 16)); } static public byte GetAValue(uint color) { return ((byte)((color) >> 24)); } public Color GetColor(Point screenPoint) { IntPtr displayDC = CreateDC("DISPLAY", null, null, IntPtr.Zero); uint colorref = GetPixel(displayDC, screenPoint.X, screenPoint.Y); DeleteDC(displayDC); byte Red = GetRValue(colorref); textBox1.Text = Convert.ToString(Red); r = Convert.ToString(Red); byte Green = GetGValue(colorref); textBox2.Text = Convert.ToString(Green); g = Convert.ToString(Green); byte Blue = GetBValue(colorref); textBox3.Text = Convert.ToString(Blue); b = Convert.ToString(Blue); return Color.FromArgb(Red, Green, Blue); } private void Form1_Load(object sender, EventArgs e) { } private void timer1_Tick(object sender, EventArgs e) { Point pt = new Point(Control.MousePosition.X, Control.MousePosition.Y); Color cl = GetColor(pt); panel1.BackColor = cl; } private void Form1_KeyDown(object sender, KeyEventArgs e) { //if (e.KeyCode == Keys.Space) //{ // //Point pt = new Point(Control.MousePosition.X, Control.MousePosition.Y); // //Color cl = GetColor(pt); // //panel1.BackColor = cl; // e.Handled = true; //将Handled设置为true，指示已经处理过KeyPress事件 // textBox4.Text = r " " g " " b; // textBox4.Enabled = true; //} } private void textBox4_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Space) { textBox4.Text = ""; //Point pt = new Point(Control.MousePosition.X, Control.MousePosition.Y); //Color cl = GetColor(pt); //panel1.BackColor = cl; e.Handled = true; //将Handled设置为true，指示已经处理过KeyPress事件 string tex = r "——" g "——" b; textBox4.Text = tex.TrimStart(); } } }}