窗体自己变成类了，提示“类 FrmSub1 可以进行设计，但不是文件中的第一个类"

[wygg3568]

Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Text
Imports System.Windows.Forms
Imports DevLib

Namespace DevApp3
Public Partial Class FrmSub1
Inherits DevLib.BaseForm
Public Sub New()
InitializeComponent()
End Sub

Public Overrides Sub RespondOnBarCodeReceived(BarCode As String)
Me.LstBarCode.Items.Add(BarCode)
End Sub

Private Sub btnClear_Click(sender As Object, e As EventArgs)
Me.LstBarCode.Items.Clear()
End Sub

Private Sub chkEnableScan_CheckStateChanged(sender As Object, e As EventArgs)
DevLibLite.DevLibEnableBarCodeScanner(Me.chkEnableScan.Checked)
End Sub

Private Sub chkEnableBeeper_CheckStateChanged(sender As Object, e As EventArgs)
DevLibLite.SetDevLibBeeperEnable(Me.chkEnableBeeper.Checked)
End Sub
End Class
End Namespace

[91program]

麻烦 LZ 提问时，将自己的开发环境说说，不要让人猜!