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WPF 支持分组互斥的 RadioButton 式单选菜单

扩展 MenuItem 为同组互斥的 RadioMenuItem,并且将对勾符号修改为圆点。

http://stackoverflow.com/a/35692688/5972372

这个问题下还有其他解决方案,可以看看,不过还是喜欢这种实现方式,简单干净。

 1 public class RadioMenuItem : MenuItem
 2 {
 3     public string GroupName { get; set; }
 4     protected override void OnClick()
 5     {
 6         var c = Parent as ItemsControl;
 7         if (null != c)
 8         {
 9             var rmi = c.Items.OfType<RadioMenuItem>().FirstOrDefault(i => i.GroupName == GroupName && i.IsChecked);
10             if (null != rmi) rmi.IsChecked = false;
11 
12             IsChecked = true;
13         }
14         base.OnClick();
15     }
16     private static readonly Geometry RadioDot = Geometry.Parse(
17         "M9,5.5L8.7,7.1 7.8,8.3 6.6,9.2L5,9.5L3.4,9.2 2.2,8.3 1.3,7.1L1,5.5L1.3,3.9 2.2,2.7 3.4,1.8L5,1.5L6.6,1.8 7.8,2.7 8.7,3.9L9,5.5z");
18     public override void OnApplyTemplate()
19     {
20         base.OnApplyTemplate();
21         var p = GetTemplateChild("Glyph") as Path;
22         if (null == p) return;
23         //var x = p.Width/2;
24         //var y = p.Height/2;
25         //var r = Math.Min(x, y) - 1;
26         //var e = new EllipseGeometry(new Point(x,y), r, r);
27         //p.Data = e.GetFlattenedPathGeometry();
28         p.Data = RadioDot;
29     }
30     private new bool IsCheckable { get; } = false;
31 }

 

posted on 2017-04-11 17:18  qaqz111  阅读(806)  评论(0)    收藏  举报