表单中的KeyDown事件 [英] KeyDown event in a Form

问题描述

我需要将 Ctrl + Z 组合键与自定义表单操作(撤消)关联.

I need to associate Ctrl+Z key combination to a custom form action (Undo).

我处理 Me.KeyDown 事件，但是每次按下按键时都不会收到.也许这取决于我目前具有某种形式的活动控制.

I handle Me.KeyDown event, but don't receive it each time I press keys. Perhaps it depends of what currently active control in a form I have.

从这篇文章中阅读我需要

  Private Sub MyForm_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
    e.Handled = True
  End Sub

但是，即使是这个事件，我也没有收到，但是当集中控制某些控件而不是其他控件时.

but even this event I don't receive but when having some controls focused, but not others.

• 除此之外，对于文本框，我无法再修改文本；
• 对于 TextBoxes ，还有(Windows?)撤消-重做默认机制，它应该也可以工作.
• 我该怎么做才能始终在表单上收到 KeyDown 事件?

• More that than, for the TextBoxes I can't modify the text anymore;
• More that than, for the TextBoxes there is a (Windows?) Undo-Redo default mechanism, that should work too.
• What should I do to always recieve the KeyDown event on the form?

推荐答案

您可以覆盖 ProcessCmdKey 来处理表单级别的按键.

You can override ProcessCmdKey to handle key presses on the form level.

有关更多详细信息和示例，请参阅此问题: Windows Forms .NET中的热键(非全局)

See this question for more details and examples: Hotkey (not global) in Windows Forms .NET

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