vb.net - 单击后的 VB NET 组合框和文本框响应消息

Question

单击两个控件都处于禁用状态的组合框或文本框后，如何输出消息框。任何方法将不胜感激！谢谢

Answer 1

您可以使用表单 MouseDown 事件：

Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseDown

  If TextBox1.Enabled = False AndAlso _
     e.X >= TextBox1.Left And e.X <= TextBox1.Left + TextBox1.Width AndAlso _
     e.Y >= TextBox1.Top And e.Y <= TextBox1.Top + TextBox1.Height Then
    MsgBox("The textbox is disabled")
  End If

  If ComboBox1.Enabled = False AndAlso _
     e.X >= ComboBox1.Left And e.X <= ComboBox1.Left + ComboBox1.Width AndAlso _
     e.Y >= ComboBox1.Top And e.Y <= ComboBox1.Top + ComboBox1.Height Then
    MsgBox("The combobox is disabled")
  End If

End Sub