更改键盘字体的大小

Question

当用户点击一个键入Rtextbox的字母时，我有一个带字母表所有字母按钮的电路板。用户也可以使用键盘，然后触发btn_click event。但是，当他们使用键盘时，文本会出现不同的字体和大小，导致文本框闪烁

如何将字体设置为与单击按钮时相同？

谢谢！

Private Sub btnA_mouseclick(sender As System.Object, e As System.EventArgs) Handles        btnA.Click, btnB.Click, btnC.Click, btnD.Click, btnE.Click, btnF.Click, btnG.Click, btnH.Click,     btnI.Click, btnJ.Click, btnK.Click, btnL.Click, btnM.Click, btnN.Click, btnO.Click, btnP.Click, btnQ.Click, btnR.Click, btnS.Click, btnT.Click, btnU.Click, btnV.Click, btnW.Click, btnX.Click, btnY.Click, btnZ.Click

        Dim btn As Button = DirectCast(sender, Button)
    Dim btnText As String = btn.Text 

    Dim holdCursorPos As Integer = RTextBox.SelectionStart
            RTextBox.SelectedText = btnText
            RTextBox.SelectionStart = holdCursorPos + 1
end sub


      Private Sub FormEnglish_KeyPress(sender As Object, e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
            Dim key = e.KeyChar.ToString().ToUpper()
            Dim KeyClick = "btn" & key
            For Each Button In Me.Controls
                If Button.name = KeyClick Then btnA_mouseclick(Button, Nothing)
            Next

        End Sub