C#界面控件过多导致界面闪烁卡顿

约定不等于承诺〃 2022-09-06 01:14 562阅读 0赞

1.在窗体中加入下面的代码

#region 开启界面双缓冲  解决窗体切换闪屏问题
            //下面的代码许加在MDI窗体中
            protected override CreateParams CreateParams
            {
                get
                {
                    CreateParams cp = base.CreateParams;
                    cp.ExStyle |= 0x02000000;
                    return cp;
                }
            }
            #endregion

2.自定义双缓冲panel

public partial class MyPanel : Panel
        {
            protected override void OnPaintBackground(PaintEventArgs e)
            {
                //do not allow the background to be painted
            }
    
            /**#region 开启界面双缓冲  解决窗体切换闪屏问题
            //下面的代码许加在MDI窗体中
            protected override CreateParams CreateParams
            {
                get
                {
                    CreateParams cp = base.CreateParams;
                    cp.ExStyle |= 0x02000000;
                    return cp;
                }
            }
            #endregion
    
            protected override void WndProc(ref Message m) {
                if (m.Msg == 0x0014) // 禁掉清除背景消息
                   return;
                base.WndProc(ref m);
             }  **/  
     
            protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
            {
                // 使用双缓冲
                this.DoubleBuffered = true;
    
                // 背景重绘移动到此
                if (this.BackgroundImage != null)
                {
                    e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                    e.Graphics.DrawImage(
                        this.BackgroundImage,
                        new System.Drawing.Rectangle(0, 0, this.Width, this.Height),
                        0,
                        0, this.BackgroundImage.Width, this.BackgroundImage.Height, System.Drawing.GraphicsUnit.Pixel);
                }
                base.OnPaint(e);
            }
     
        }