Question

我想知道是否有办法检测是否按下了特定键（如退格键）。这就是我的目标：

Private Sub SomeTextBox_Change()

    If len(Me.SomeTextBox.Value) = 3 and KEYPRESSED is NOT BACKSPACE Then
         <.......Code Here>
    Else
         <.......Code Here>
    End if

End Sub

Answer 1

您应该使用KeyPress事件代替Change事件：

Private Sub TextBox1_KeyPress(ByVal KeyAscii As MSForms.ReturnInteger)

    If Len(Me.SomeTextBox.Value) = 3 And KeyAscii <> 8 Then 'Backspace has keycode = 8.
         <.......Code Here>
    Else
         <.......Code Here>
    End If

End Sub

您可以在此处找到完整的密钥代码列表：http://www.asciitable.com/

Answer 2

Private Sub TextBox1_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)

If KeyCode.Value = vbKeyF1 Then
       MsgBox "F1 is pressed"
    End If
End Sub

Answer 3

此示例将“InsertProc”指定给键序列CTRL + PLUS SIGN，并将“SpecialPrintProc”指定给键序列SHIFT + CTRL + RIGHT ARROW。

Application.OnKey "^{+}", "InsertProc" 
Application.OnKey "+^{RIGHT}","SpecialPrintProc"

更多示例和信息继续：https://msdn.microsoft.com/en-us/library/office/aa195807%28v=office.11%29.aspx

Answer 4

您应该使用KeyPress事件：

Private Sub SomeTextBox_KeyPress(ByVal KeyAscii As MSForms.ReturnInteger)

If Len(Me.SomeTextBox.Value) = 3 And KeyAscii <> vbKeyBack Then
     '<.......Code Here>
Else
     '<.......Code Here>
End If

End Sub

您可以使用KeyAscii = 0取消输入的密钥！

在此处查找所有Ascii值的列表http://www.asciitable.com/

如何检测是否按下了特定键？

4 个答案: