[C#] [WinForm] 取得Form1上滑鼠移動座標、Click座標、顏色

[C#] [WinForm] 取得Form1上滑鼠移動座標、Click座標、顏色

2016-10-24

使用 Visual Studio 2015 with Update 3

Form1.cs 內容

using System; using System.Drawing; using System.Runtime.InteropServices; using System.Windows.Forms; namespace MouseGetPosition {     public partial class Form1 : Form     {         [DllImport("gdi32")]         private static extern int GetPixel(IntPtr hdc, int x, int y);         [DllImport("User32")]         private static extern IntPtr GetWindowDC(IntPtr hwnd);         public Form1()         {             InitializeComponent();             //p1 = new Point(0, 0);             //p2 = (Point)this.ClientSize;         }         private void Form1_MouseMove(object sender, MouseEventArgs e)         {             label2.Text = "Move : " +  System.Windows.Forms.Cursor.Position.X + ", " + System.Windows.Forms.Cursor.Position.Y;         }         public static System.Drawing.Color GetPixelAtCursor()         {             System.Drawing.Point p = Cursor.Position;             return System.Drawing.Color.FromArgb(GetPixel(GetWindowDC(IntPtr.Zero), p.X, p.Y));         }         private void Form1_MouseClick(object sender, MouseEventArgs e)         {             label1.Text = "Click : " + System.Windows.Forms.Cursor.Position.X + ", " + System.Windows.Forms.Cursor.Position.Y;             string colorString = GetPixelAtCursor().ToString();             Color backX = GetPixelAtCursor();             label3.Text = colorString;         }         private void Form1_Load(object sender, EventArgs e)         {         }         private void Form1_Paint(object sender, PaintEventArgs e)         {         }     } }

(完)