C#怎么解决带透明度画笔的“青蛙卵”现象速度仍然流畅

C#怎么解决带透明度画笔的“青蛙卵”现象速度仍然流畅 C#如何解决带透明度画笔的“青蛙卵”现象，速度仍然流畅, 我用GDI+做带有透明度的画笔，实现后出现“青蛙卵”现象，目前有方法解决，但是速度不流畅，会滞后，希望有高人能把青蛙卵解决了 ，同时速度又不受影响的。 下面贴了代码 只是实现带透明度功能。需要解决有透明度时，不会出现青蛙卵，速度也不受影响。 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.Drawing.Drawing2D; namespace Alpha_Pen { public partial class Form1 : Form { public Form1() { InitializeComponent(); } Point startPoint,secondPoint; bool drawMove; Pen pen; Bitmap bit; Graphics g; private void pictureBox1_MouseDown(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { startPoint = new Point(e.X, e.Y); drawMove = true; } } private void pictureBox1_MouseMove(object sender, MouseEventArgs e) { if (drawMove) { pen = new Pen(Color.FromArgb(128,255,0,0),20); pen.StartCap = LineCap.Round; pen.LineJoin = LineJoin.Round; pen.EndCap = LineCap.Round; secondPoint = new Point(e.X,e.Y); g.DrawLine(pen,startPoint.X,startPoint.Y,secondPoint.X,secondPoint.Y); startPoint = secondPoint; pictureBox1.Invalidate(); } } private void pictureBox1_MouseUp(object sender, MouseEventArgs e) { drawMove = false; } private void pictureBox1_Paint(object sender, PaintEventArgs e) { if (bit != null) { e.Graphics.DrawImage(bit, 0, 0); } } private void Form1_Load(object sender, EventArgs e) { pictureBox1.Width = 1920; pictureBox1.Height = 1080; bit= new Bitmap(pictureBox1.Width, pictureBox1.Height); g = Graphics.FromImage(bit); } } } ------解决-------------------------------------------------------- 楼主～ 你可以在paint事件里实时刷新改成局部刷新，整个全部刷新速度会慢。 你可以根据第一点和第二点两点确定一个矩形，然后在paint中只刷新改矩形区域～