Question

C# pictureBox控件中绘制动态图形时闪烁怎么解决？

下面是绘图代码。我已经用了双缓存了啊！可还是闪烁。怎么解决啊？（很急啊！）

void Timers_Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
double x = 200 + 100* Math.Sin(num * Math.PI / 180);
double y = 120 - 100 * Math.Cos(num * Math.PI / 180);
label1.Text = Convert.ToString((num = num + 0.1)); //显示到lable
Graphics p = pictureBox1.CreateGraphics();
Bitmap bmp = new Bitmap(600, 600);
Graphics g = Graphics.FromImage(bmp);

g.DrawLine(new Pen(Color.Black), (float)200, (float)120, (float)x, (float)y);
p.DrawLine(new Pen(Color.Black), (float)200, (float) 120, (float)x, (float)y);
pictureBox1.CreateGraphics().DrawImage(bmp, 0, 0);

pictureBox1.Invalidate();
}

Answer 1

每次释放一下内存Graphics

Answer 2

双缓冲就不会闪了

追问

已经用了双缓存了，有减轻无根除