Attribute VB_Name = "modSmart"
 Declare Function PowerOn Lib "smartdll2.dll" () As Integer
 Declare Function PowerOff Lib "smartdll2.dll" () As Integer

 Declare Function OpenComm Lib "smartdll2.dll" (ByVal nPort As Integer) As Integer
 Declare Function CloseComm Lib "smartdll2.dll" () As Integer
 Declare Function GetState Lib "smartdll2.dll" (ByVal nPort As Integer) As Integer

 Declare Function IC_ATR Lib "smartdll2.dll" (ByVal DataBuffer As String) As Integer
 Declare Function IC_ReadMain Lib "smartdll2.dll" (ByVal Offset As Integer, ByVal Length As Integer, ByVal DataBuffer As String) As Integer
 Declare Function IC_ReadProtect Lib "smartdll2.dll" (ByVal DataBuffer As String) As Integer
 Declare Function IC_ReadSecurity Lib "smartdll2.dll" (ByVal DataBuffer As String) As Integer
 Declare Function IC_ReadErrorCount Lib "smartdll2.dll" () As Integer

 Declare Function IC_WriteMain Lib "smartdll2.dll" (ByVal Offset As Integer, ByVal Length As Integer, ByVal DataBuffer As String) As Integer
 Declare Function IC_WriteProtect Lib "smartdll2.dll" (ByVal Offset As Integer, ByVal Length As Integer, ByVal DataBuffer As String) As Integer
 Declare Function IC_UpdateSM Lib "smartdll2.dll" (ByVal Offset As Integer, ByVal Length As Integer, ByVal DataBuffer As String) As Integer
 Declare Function IC_ChangePass Lib "smartdll2.dll" (ByVal PassWord As String) As Integer
 Declare Function IC_PSCCheck Lib "smartdll2.dll" (ByVal DataBuffer As String) As Integer
 Declare Function CardExist Lib "smartdll2.dll" () As Integer
 
 Declare Function POS_IsReady Lib "smartdll2.dll" (ByVal nPosAddr As Byte) As Integer
 Declare Function POS_GetTime Lib "smartdll2.dll" (ByVal nPosAddr As Byte, ByVal strTime As String) As Integer
 Declare Function POS_SetTime Lib "smartdll2.dll" (ByVal nPosAddr As Byte, ByVal strTime As String) As Integer
 Declare Function POS_GetNextFrame Lib "smartdll2.dll" (ByVal nPosAddr As Byte, ByVal strFrame As String) As Integer
 Declare Function POS_GetFrameAgain Lib "smartdll2.dll" (ByVal nPosAddr As Byte, ByVal strFrame As String) As Integer
 Declare Function POS_SetRecordCount Lib "smartdll2.dll" (ByVal nPosAddr As Byte, ByVal nRecordCount As Integer) As Integer
 
 Declare Function ReadDot Lib "smartdll2.dll" (ByVal nCode As Integer, ByVal strDot As String) As Integer
 Public Const dwOffset = &H40
 Public Const dwLength = 13
 Public Const dwNameOffset = &H80
 Public Const dwNameLength = 96
 
Function KeyFilter(KeyAscii As Integer, Optional isDigital As Boolean = False) As Integer
    
    If isDigital Then
        Select Case KeyAscii
           Case Asc("0") To Asc("9"), Asc("a") To Asc("f"), Asc("A") To Asc("F"), vbKeyBack, vbKeyLButton, vbKeyRButton, vbKeyTab, vbKeyReturn
                KeyFilter = KeyAscii
                Exit Function
           Case Else
             KeyFilter = 7 'beep
        End Select
    Else
        Select Case KeyAscii
           Case Asc("0") To Asc("9"), Asc("a") To Asc("z"), Asc("A") To Asc("Z"), vbKeyBack, vbKeyLButton, vbKeyRButton, vbKeyTab, vbKeyReturn
                KeyFilter = KeyAscii
                Exit Function
           Case Else
             KeyFilter = 7 'beep
        End Select
    End If
End Function
Function CharToNum(inChar As String) As Byte
    Select Case UCase(inChar)
        Case "0" To "9": CharToNum = CByte(inChar)
        Case "A" To "F": CharToNum = Asc(UCase(inChar)) - 55
        Case Else:       CharToNum = 0
    End Select
End Function