某种编码以4位二进制码为一组,每组前两位表示方向,后两位表示距离。编写一个程序,将编码翻译成方向和距离,距离值为每组编码后两位二进制码转换为十进制数的值。具体功能如下:在 文本框Text1中输入连续多组编码,单击“翻译”按钮Commandl,结果显示在列表框List1中。
程序运行界面如右图所示。

(1)要使程序运行时,文本框Text1的Width属性值为2018,可在Form_Load事件过程中添加语句________(单选,填字母:
A.Width=2018 / | B.Textl. Width = 2018 / | C.Width. Textl=2018)。 |
(2)实现上述功能的VB程序如下,请在划线处填人合适的代码。
Private Sub Command1_Click()
Dim s As String, c As String, d As String
Dim n As Integer, bl As Integer, b2 As Integer, v As Integer, i As Integer
s = Textl.Text: n = Len(s): i = 1
Do While i <= n
c = Mid(s, i, 2)
If c = "00" Then
d = "东"
ElseIf c = "01" Then
d = "南"
ElseIf c = "10" Then
d = "西"
Else
d = "北"
End If
b1 = Val(Mid(s, i + 2, 1))
b2 = Val(Mid(s, i + 3, 1))
v=_______________
①List1.AddItem d + " " + Str(v)
_____________
②Loop
End Sub
(3)若文本框Textl中输入的内容为“1111”,单击“翻译”按钮,列表框List1中显示的内容是_________。