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IC卡读写器VB.NET源代码（模块声明）
模块声明：
Module Module1
'读卡函数声明
Public Declare Function piccreadex Lib "OUR_MIFARE.dll" (ByVal ctrlword As Byte,ByRef serial As Byte,ByVal area As Byte,ByVal keyA1B0 As Byte,ByRef picckey As Byte,ByRef piccdata0_2 As Byte) As Byte
'写卡函数声明
Public Declare Function piccwriteex Lib "OUR_MIFARE.dll" (ByVal ctrlword As Byte,ByRef piccdata0_2 As Byte) As Byte
'修改单区函数声明
Public Declare Function piccchangesinglekey Lib "OUR_MIFARE.dll" (ByVal ctrlword As Byte,ByRef piccoldkey As Byte,ByRef piccnewkey As Byte) As Byte
'让设备发出声响函数声明
Public Declare Function pcdbeep Lib "OUR_MIFARE.dll" (ByVal xms As Long) As Byte
'读取设备编号函数声明
Public Declare Function pcdgetdevicenumber Lib "OUR_MIFARE.dll" (ByRef devicenumber As Byte) As Byte
'发送显示内容到读卡器
Public Declare Function lcddispfull Lib "OUR_MIFARE.dll" (ByVal lcdstr As String) As Byte
'控制字定义,控制字指定,控制字的含义请查看本公司网站提供的动态库说明 Public Const BLOCK0_EN = &H1 '操作第0块 Public Const BLOCK1_EN = &H2 '操作第1块 Public Const BLOCK2_EN = &H4 '操作第2块 Public Const NEEDSERIAL = &H8 '仅对指定序列号的卡号操作 Public Const EXTERNKEY = &H10 '需要在参数中指定认证密码 Public Const NEEDHALT = &H20 '操作后休眠该卡，必须拿开卡再放回感应区才能重新感应到卡 End Module （编辑：李大同）
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