自己水平不够解决不了，求大虾帮忙

使用身份证读卡器的DLL文件，编写 内部函数 时就提示未知编译错误

求解

全局代码部分

Public Declare Function Syn_GetCOMBaud Lib "Syn_IDCardRead.dll" (ByVal iComID As Integer, ByRef puiBaud As Byte) As Integer
Public Declare Function Syn_SetCOMBaud Lib "Syn_IDCardRead.dll" (ByVal iComID As Integer, ByVal uiCurrBaud As Integer, ByVal uiSetBaud As Integer) As Integer
Public Declare Function Syn_OpenPort Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer) As Integer
Public Declare Function Syn_ClosePort Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer) As Integer

Public Declare Function Syn_GetSAMStatus Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer, ByVal iIfOpen As Integer) As Integer
Public Declare Function Syn_ResetSAM Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer, ByVal iIfOpen As Integer) As Integer
Public Declare Function Syn_GetSAMID Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer, ByRef pucSAMID As Byte, ByVal iIfOpen As Integer) As Integer
Public Declare Function Syn_GetSAMIDToStr Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer, ByRef pcSAMID As Byte, ByVal iIfOpen As Integer) As Integer

Public Declare Function Syn_StartFindIDCard Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer, ByRef pucManaInfo As Byte, ByVal iIfOpen As Integer) As Integer
Public Declare Function Syn_SelectIDCard Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer, ByRef pucManaMsg As Byte, ByVal iIfOpen As Integer) As Integer
Public Declare Function Syn_ReadMsg Lib "Syn_IDCardRead.dll" (ByVal iPortID As Integer, ByVal iIfOpen As Integer, ByRef pIDCardData As Byte) As Integer

Public Declare Function Syn_SendSound Lib "Syn_IDCardRead.dll" (ByVal iCmdNo As Integer) As Integer
Public Declare Function Syn_DelPhotoFile Lib "Syn_IDCardRead.dll" ()

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内部函数部分

Dim i, j As Integer
Dim sMsg As String
Dim ret As Integer
For j = 1001 To 1017
   
    If Syn_OpenPort(j) = 0 Then
        If Syn_GetSAMStatus(j, 0) = 0 Then
            Vars("iPort") = j
            Syn_ClosePort (j)
            Vars("停止自动读取")=0
            GoTo FIND
        End If
        Syn_ClosePort (j)
       
    Else
        Vars("停止自动读取")=1
    End If
Next j
For i = 1 To 17
    If Syn_OpenPort(i) = 0 Then
        If Syn_GetSAMStatus(i, 0) = 0 Then
            Vars("iPort") = i
            Syn_ClosePort (i)
            Vars("停止自动读取")=0
            GoTo FIND
           
        End If
        Syn_ClosePort (i)
    Else Vars("停止自动读取")=1
    End If
Next i
FIND:

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点击浏览该文件:dll.rar

求助