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on error goto
ÓÐûÓд®¿Ú£¬Óò»×ÅÒì³£»úÖÆ°É¡£
1.on error rusume next
·ÅÔÚ³ÌÐòÍ·Ò»ÐÐ ÓдíÎ󽫼ÌÐøÖ´ÐÐ.
2.ÈçÏëÖжϴ¦Àí
on error goto adress
:
:
adress:
msbox "´®¿Úδ´ò¿ªÇ뿪´®¿Ú"
exit sub
1.on error resume next
·ÅÔÚ³ÌÐòÍ·Ò»ÐÐ ÓдíÎ󽫼ÌÐøÖ´ÐÐ.
2.ÈçÏëÖжϴ¦Àí
on error goto adress
:
:
adress:
msbox "´®¿Úδ´ò¿ªÇ뿪´®¿Ú"
exit sub
VB code:
Option Explicit
Dim a As Integer
Dim blnAutoSendFlag As Boolean
Dim openFlag As Boolean
Private Sub Form_Load()
MSComm1.Settings = "9600,n,8,1"
MSComm1.InputMode = comInputModeBinary '²ÉÓöþ½øÖÆ´«Êä
MSComm1.InBufferCount = 0 'Çå¿Õ½ÓÊÜ»º³åÇø
MSComm1.OutBufferCount = 0 'Çå¿Õ´«Ê仺³åÇø
MSComm1.RThreshold = 1 '²úÉúMSCommʼþ
MSComm1.InBufferSize = 1024
Shape1.FillStyle = 0
OpenPortNum
End Sub
Private Sub OpenPortNum()
On Error GoTo uerror
For a = 1 To 16
MSComm1.CommPort = a
MSComm1.PortOpen = True
If MSComm1.PortOpen = True Then
Print "¿ÉÓÃComºÅ= "; a
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