◆首先文本输入区域添加如下代码，实现将输入文本按回车符分割，并提前有效数字。
Private Sub Text2_KeyPress(KeyAscii AsInteger)
‘注意选择文本文档事件的类型
Dim tmp() As String
Dim aa As String * 1
Dim rd As String
Dim i As Integer
Dim reload As Integer
Dim response
aa = Chr$(KeyAscii)
If aa = Chr(13) And pc_draw_flag = TrueThen
tmp = Split(Text2.Text, Chr(13)) '把目标数组按分隔符chr（13）分割
For i = 0 To UBound(tmp) 'UBound()取数组内元素的个数
rd = getnum(CStr(tmp(i)))
Next i
route(route_num) = "&H"& Hex(rd)‘提示，此处处理较为重要
route_num = route_num + 1
Text8.Text = route_num
If route_num = 10 Then
response = MsgBox("路径存储已达上限！是否重新规划？", vbYesNo + vbDefaultButton2 + vbInformation, "提示信息！")
If response = vbYes Then
route_num = 0
Else
MsgBox "路径存储已完成，请点击发送按钮！", vbOKOnly + vbInformation, "提示信息！"
End If
End If
End If
End Sub
其中用到了getnum过程，其代码如下，起到提取数字并进行连接的作用。
Function getnum(sp As String) As String
Dim vi As String
For i = 1 To Len(sp)
vi = Mid(sp, i)
If IsNumeric(vi) Then
getnum = getnum & vi
Exit For
End If
Next
End Function
◆MSComm1初始化时注意将参数，若设置不正确，则接受会出现问题，其他参数正常设置即可。
MSComm1.InputMode= comInputModeBinary
'重要突破点，VB参考：串口控件的inputmode属性确定input属性读取的数据类型，如果设置inputmode为cominputmodetext，input属性通过一个variant返回文本数据，如果设置inputmode为cominputmodebinary，input属性通过一个variant返回二进制数据的数组，此时方可进行二进制转换。
◆然后在MSComm1的事件处理中，做如下处理，注意划线语句，
Select Case MSComm1.CommEvent
Case 2
buffer = MSComm1.Input
staylonglowpower = staylonglowpower + 1
Fori = 0 To UBound(buffer)
If Len(Hex(buffer(i))) = 1 Then
rec_data = rec_data & "0"& Hex(buffer(i)) & " "
Else
rec_data = rec_data & Hex(buffer(i)) & " "
End If
Next i
EndSelect
显示如下写即可
Text1.Text =Text1.Text + rec_data + " "
当然在txt控件的change事件里做如下处理使其支持动态显示或者说光标总是位于最前位置。
Text1.SelStart =Len(Text1)
◆发送部分如下写
Private SubCmdSend_Click()
IfMSComm1.PortOpen = True Then
If pc_draw_flag = True And OptSendHex.Value= True Then
MSComm1.Output = route‘定义的一个0-9十个byte的数组
send_num = send_num + 10
Text7.Text = send_num
End If
If Text2.Text = "" Orpc_draw_flag = False Then
MsgBox "发送数据不能为空，请进行路径规划或输入字符！", vbOKOnly + vbInformation, "提示信息！"
Else
If OptSendHex.Value = True Then
MSComm1.InputMode =comInputModeBinary
MSComm1.InputLen = 0
Else
MSComm1.InputMode =comInputModeText
MSComm1.InputLen = 1
End If
' MSComm1.Output = Trim(Val(Text2.Text))
End If
Else
MsgBox "串口没有打开，请打开串口！",vbOKOnly + vbInformation, "提示信息！"
End If
route_num = 0
If pc_draw_flag= True And MSComm1.PortOpen = True And Text2.Text <> "" Then
For i = 0 To 9
Text2.Text =Text2.Text & route(i) & " "
If i = 9 Then
Text2.Text = Text2.Text & Chr(13) &Chr(10)
End If
Next i
End If