◆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！","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！","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