Question

在VB程序运行中出现“必选参数”是什么意思啊

以下是我编写的程序：Private Sub Command1_Click()
Dim s As Double
s = right / t * 100
MsgBox "你一共做了" & t & "道题，" & "对了" & right & "道，" & "你的得分是" & s, , "你的得分"

End Sub

Private Sub Text4_KeyPress(KeyAscii As Integer)
Dim t As Integer, s As Double
Dim right, wring As Long
right = 0
wrong = 0
t = 0
If Text3 = Val(Text1) + Val(Text2) Then
right = right + 1
Text4 = Text4 & vbCrLf & Text1 & " + " & Text2 & " = " & Text3 & " √ "

Else

Texwrong = wrong + 1
Text4 = Text4 & vbCrLf & Text1 & " + " & Text2 & " = " & Text3 & " × " & " " & "正确答案是" & Str(Val(Text1) + Val(Text2))

End If
t = t + 1
End Sub

Answer 1

Dim s As Double
Dim right, wring, t As Long
Private Sub Command1_Click()
s = right / t * 100
MsgBox "你一共做了" & t & "道题，" & "对了" & right & "道，" & "你的得分是" & s, , "你的得分"
Text4.Text = ""
End Sub
Private Sub Text4_KeyPress(KeyAscii As Integer)
Dim s As Double
If Text3 = Val(Text1) + Val(Text2) Then
right = right + 1
Text4 = Text4 & vbCrLf & Text1 & " + " & Text2 & " = " & Text3 & " √ "
Else
Texwrong = wrong + 1
Text4 = Text4 & vbCrLf & Text1 & " + " & Text2 & " = " & Text3 & " × " & " " & "正确答案是" & Str(Val(Text1) + Val(Text2))
End If
t = t + 1
End Sub

以上程序可以实现你的要求：
说一下你的程序：
s,t,right,wrong都是全局变量所以要在程序的最前面定义
你在Text4_KeyPress事件中定义的它们只是私有的就是只在Text4_KeyPress事件中起作用：所以才会提示“必选参数”

再一个就是按钮按下之后最好清除text4中的内容否则
再一次发生Text4_KeyPress事件text4中的内容有些混乱

Answer 2

你定义的变量名right与函数right的名字冲突了