C#实现滑动开关效果

这篇文章主要为大家详细介绍了C#实现滑动开关效果,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

C#重绘checkbox生成滑动开关,供大家参考,具体内容如下

通过调用checkbox控件的paint事件,在重绘事件里判断checked属性,如果选中绘制选中图形,如果未选中绘制未选中图形。

效果图:

绘制圆角矩形方法:

 ///  /// 填充圆角矩形 ///  ///  ///  ///  ///  public static void FillRoundRectangle(Graphics g, Brush brush, Rectangle rect, int cornerRadius) { using (GraphicsPath path = CreateRoundedRectanglePath(rect, cornerRadius)) { g.FillPath(brush, path); } } ///  /// 圆角矩形路径 ///  ///  ///  ///  internal static GraphicsPath CreateRoundedRectanglePath(Rectangle rect, int cornerRadius) { GraphicsPath roundedRect = new GraphicsPath(); roundedRect.AddArc(rect.X, rect.Y, cornerRadius * 2, cornerRadius * 2, 180, 90); roundedRect.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * 2, rect.Y); roundedRect.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y, cornerRadius * 2, cornerRadius * 2, 270, 90); roundedRect.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height - cornerRadius * 2); roundedRect.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y + rect.Height - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 0, 90); roundedRect.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.X + cornerRadius * 2, rect.Bottom); roundedRect.AddArc(rect.X, rect.Bottom - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 90, 90); roundedRect.AddLine(rect.X, rect.Bottom - cornerRadius * 2, rect.X, rect.Y + cornerRadius * 2); roundedRect.CloseFigure(); return roundedRect; }

重绘代码:

 private void RectangleCheckBoxButton(object sender, PaintEventArgs e) { CheckBox rButton = (CheckBox)sender; Graphics g = e.Graphics; g.Clear(this.BackColor); Rectangle RoundRect = new Rectangle(0, 0, 50, 30); g.SmoothingMode = SmoothingMode.AntiAlias; //FillRoundRectangle(g, Brushes.White, radioButtonrect, 15); if (rButton.Checked) { Color color =Color.FromArgb( 55, 197, 90); Brush b1 = new SolidBrush(color); FillRoundRectangle(g, b1, RoundRect, 15); using (Pen pen = new Pen(Color.FromArgb(255, 255, 255))) { FillRoundRectangle(g, Brushes.White, new Rectangle(22, 2,26, 26), 13); } } else { using (Pen pen = new Pen(Color.FromArgb(255, 255, 255))) { FillRoundRectangle(g, Brushes.Silver,  RoundRect, 15); FillRoundRectangle(g,Brushes.White, new Rectangle(2, 2, 26, 26), 13); } } Font f = new Font("微软雅黑", 12); g.DrawString(((CheckBox)sender).Text,f ,  Brushes.White, new PointF(60, 6)); }

调用:

 private void checkBox1_Paint(object sender, PaintEventArgs e) { RectangleCheckBoxButton(sender, e); }

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