56 lines
1.6 KiB
C#
56 lines
1.6 KiB
C#
using System.Drawing;
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using System.Windows.Forms;
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namespace JinYuan.ControlLib
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{
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public partial class PanelEnhanced : Panel
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{
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public PanelEnhanced()
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{
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InitializeComponent();
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//设置控件样式，去除缓冲
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this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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this.SetStyle(ControlStyles.DoubleBuffer, true);
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this.SetStyle(ControlStyles.ResizeRedraw, true);
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this.SetStyle(ControlStyles.Selectable, true);
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this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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}
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protected override void OnPaintBackground(PaintEventArgs e)
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{
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//重载基类得背景擦除方法
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//解决窗体刷新，放大和闪烁
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return;
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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//使用双缓冲
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this.DoubleBuffered = true;
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if (this.BackgroundImage != null)
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{
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e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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e.Graphics.DrawImage(this.BackgroundImage, new Rectangle
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(0, 0, this.Width, this.Height), 0, 0, this.BackgroundImage.Width, this.BackgroundImage.Height, GraphicsUnit.Pixel);
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}
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base.OnPaint(e);
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}
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#region 减少闪烁
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protected override CreateParams CreateParams
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{
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get
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{
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CreateParams cp = base.CreateParams;
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cp.ExStyle |= 0x02000000;
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return cp;
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}
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}
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#endregion
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}
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}
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