using System; using System.Collections.Generic; using System.Text; using System.Windows.Forms; using System.Drawing; public class MyLabel : Control { protected override void OnPaint(PaintEventArgs e) { DrawPaint(); base.OnPaint(e); } private string showString = ""; /// <summary> /// 显示字符串 /// </summary> public string ShowString { get { return showString; } set { showString = value; this.Refresh(); } } /// <summary> /// 先在缓存内画好 /// </summary> public void DrawPaint() { Bitmap offBm = new Bitmap(Width, Height); Graphics offerSreen = Graphics.FromImage(offBm);//定义画画到图片上 SolidBrush tempsb = new SolidBrush(Color.White);//定义画笔 offerSreen.FillRectangle(tempsb, 0, 0, Width, Height);//填充颜色 tempsb.Color=Color.Black; offerSreen.DrawString(showString, this.Font, tempsb, 0, 0);//写文字 this.CreateGraphics().DrawImage(offBm, 0, 0);//贴出来显示 offBm.Dispose();//释放 offerSreen.Dispose(); tempsb.Dispose(); } /// <summary> /// 不让重画背景 /// </summary> /// <param name="e"></param> protected override void OnPaintBackground(PaintEventArgs e) { //base.OnPaintBackground(e); } }
时间: 2024-10-28 05:27:20