【C#】[取色]取屏幕指定点颜色(Api)
效果图：
这是核心代码：
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 取指定点颜色
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
[DllImport("user32.dll")]//取设备场景
private static extern IntPtr GetDC(IntPtr hwnd);//返回设备场景句柄
[DllImport("gdi32.dll")]//取指定点颜色
private static extern int GetPixel(IntPtr hdc, Point p);
private void timer1_Tick(object sender, EventArgs e)
{
Point p = new Point(MousePosition.X, MousePosition.Y);//取置顶点坐标
textBox_p.Text = p.X + "," + p.Y;//把坐标显示到窗口上
IntPtr hdc = GetDC(new IntPtr(0));//取到设备场景(0就是全屏的设备场景)
int c = GetPixel(hdc, p);//取指定点颜色
int r = (c & 0xFF);//转换R
int g = (c & 0xFF00) / 256;//转换G
int b = (c & 0xFF0000) / 65536;//转换B
textBox_10jz.Text = c.ToString();//输出10进制颜色
textBox_16jz.Text = r.ToString("x").PadLeft(2, '0') + g.ToString("x").PadLeft(2, '0') + b.ToString("x").PadLeft(2, '0');//输出16进制颜色
textBox_RGB.Text = r.ToString() + ',' + g.ToString() + ',' + b.ToString();//输出RGB
pictureBox_color.BackColor = Color.FromArgb(r,g,b);//设置颜色框
}
}
}
源码下载：
