使标签参与控制制表 [英] Make label participate in control tabbing

问题描述

我有从 Label 继承的自定义控件，并将 ControlStyle.Selectable 设置为 true.

I have custom control that inherits from Label and has ControlStyle.Selectable set to true.

当用户点击控件时，该控件会获得焦点，但如果用户从另一个控件中选择选项卡，则不会.

The control receives focus when the user clicks on it, but won't if the user tabs from another control.

即使我有一个仅由该类型控件填充的表单，它们也不会通过 Tab 键获得焦点.

Even when I have a form filled by only that type of controls none of them recieve focus by tabbing.

如何让我的 Label 通过 Tab 键获得焦点?

How can I make my Label receive focus by tabbing?

推荐答案

将其设为 TextBox，设置BorderStyle为None，设置>BackColor 为 Control 并将 ReadOnly 设置为 True.这应该提供一个标签的外观，但仍然允许它被标记为焦点.

It might be easier just to make it a TextBox, set the BorderStyle to None, set the BackColor to Control and set ReadOnly to True. This should give the appearance of a label, but still allow it to be tabbed onto for focus.

Update 看起来像SetStyle(ControlStyles.Selectable, true); 和 TabStop = true; 的组合，你可以得到使用 Tab 键聚焦的标签.下面是一个简单的例子，展示了它的工作原理:

Update It looks like with a combination of SetStyle(ControlStyles.Selectable, true); and TabStop = true;, you can get the Label to focus using the Tab key. Below is a simple example that shows it working:

public class SelectableLabel : Label
{
   public SelectableLabel()
   {
      SetStyle(ControlStyles.Selectable, true);
      TabStop = true;
   }

   protected override void OnEnter(EventArgs e)
   {
      BackColor = Color.Red;
      base.OnEnter(e);
   }

   protected override void OnLeave(EventArgs e)
   {
      BackColor = SystemColors.Control;
      base.OnLeave(e);
   }

   protected override void OnMouseDown(MouseEventArgs e)
   {
      this.Focus();
      base.OnMouseDown(e);
   }
}

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