如何在 vbnet 中创建按钮快捷方式 [英] how to create button shortcuts in vbnet

问题描述

我尝试为我的按钮创建键盘快捷键.

I tried creating keyboard shortcuts for my buttons.

这是我的代码

 Private Sub form_main_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
    If Keys.ControlKey + Keys.N Then
        'btn_add.PerformClick()
        addentry()
    ElseIf Keys.ControlKey + Keys.E Then
        'btn_edit.PerformClick()
        editentry()
    End If
End Sub

问题是即使我按下其他按钮，该功能仍然被调用.我也尝试使用表单 keydown 属性，但结果仍然相同.

The problem is even when I press other buttons the function is still called. I also tried using form keydown property but the result is still the same.

附加信息:

• addentry 和 editentry 函数只会调用 form_addit
• btn_add 将调用 addentry
• btn_edit 将调用 editentry

• the functions addentry and editentry will just call the form_addedit
• btn_add will call for addentry
• btn_edit will call for editentry

推荐答案

首先 Keys.*** 只是一个枚举.其中的每个条目只是一个代表密钥代码的数字.因此，您目前只是将数字相加.

First of all Keys.*** is just an enumeration. Every entry in it is just a number representing a key code. So you are currently just adding numbers together.

Keys.ControlKey 是 17 而 Keys.N 是 78，所以你实际上是在写:

Keys.ControlKey is 17 and Keys.N is 78, so you're literally writing:

If 17 + 78 Then

哪个总是返回 True 因为它大于 0.

Which will always return True because it's greater than 0.

要执行您的要求，您必须通过检查传递给事件的事件参数 (EventArgs) 来检查按下了哪个键.

To do what you ask you must check which key was pressed by checking the event arguments (EventArgs) passed to the event.

但是由于您使用的是 KeyPress 事件，因此您无法从事件参数中获取键枚举，因此我建议您改用 KeyDown 事件.

But since you are using the KeyPress event you cannot get the key enumeration out of the event args, so I recommend you to use the KeyDown event instead.

Private Sub form_main_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
    If e.Control = True AndAlso e.KeyCode = Keys.N Then
        addentry()
    ElseIf e.Control = True AndAlso e.KeyCode = Keys.E Then
        editentry()
    End If
End Sub

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