【回帖就送分】为什么用线程去移动图片会闪呀闪的啊？

using System;

using System.Windows.Forms;

using System.Drawing;

using System.Threading;



namespace 多线程带参数

{

    class Form1 : Form

    {

        private PictureBox pic;

        Graphics g;

        private int Bit_X,Loca;

        Bitmap bit;



        public Form1()

        {

            Initialize();

        

        }



        private void Initialize()

        {

            pic = new PictureBox();

            pic.Size = new Size(32, 48);

            pic.Location = new Point(0,0);

            

            g = pic.CreateGraphics();



            this.SuspendLayout();

            this.Controls.Add(pic);

            

            this.Size = new Size(500, 280);

            this.StartPosition = FormStartPosition.CenterScreen;

            this.ResumeLayout();

            



            bit = new Bitmap("MAN.png");

            Loca=Bit_X = 0;

            pic.Paint += new PaintEventHandler(pic_Paint);

        

           // CheckForIllegalCrossThreadCalls = false;

        }



        void pic_Paint(object sender, PaintEventArgs e)

        {

            Thread thread1 = new Thread(new ThreadStart(ManMove));

            thread1.IsBackground = true;

            thread1.Start();

        }



        private void ManMove()

        {

            while (pic.Location.X<460)

            {

                

                //bit.RotateFlip(RotateFlipType.Rotate90FlipY);

                Rectangle rect = new Rectangle(Bit_X, 96, 32, 48);

                Rectangle rectLoca = new Rectangle(0, 0, 32, 48);

                g.Clear(pic.BackColor);

                g.DrawImage(bit, rectLoca,rect,GraphicsUnit.Pixel);

                Thread.Sleep(200);

                Bit_X += 32;

                if (Bit_X >= 128)

                    Bit_X = 0;

                



                MethodInvoker m = new MethodInvoker(Move_Loca);

                this.BeginInvoke(m);  //异步执行委托



            }

            MessageBox.Show("d");

        }



        private void Move_Loca()

        {

            pic.Location = new Point(Loca+=3, 0); 

        }

    }

}