function SetDoorPassCardDE(hPort: THandle; Style: Byte; Card: PChar; Code: PChar;
Right: Integer=0; BeginPass: PChar=nil; EndPass: PChar=nil; EmpId: PChar=nil): Boolean;我写的这样的居然不行
Declare Function SetDoorPassCardDE Lib "abc.dll" (ByVal hPort As Long, ByVal Style As Byte, ByVal card As String, ByVal code As String, Optional ByVal Right As Long = 0, Optional ByVal BeginPass As String = vbNullString, Optional ByVal EndPass As String = vbNullString, Optional ByVal EmpId As String = vbNullString) As Boolean
为什么?
Right: Integer=0; BeginPass: PChar=nil; EndPass: PChar=nil; EmpId: PChar=nil): Boolean;我写的这样的居然不行
Declare Function SetDoorPassCardDE Lib "abc.dll" (ByVal hPort As Long, ByVal Style As Byte, ByVal card As String, ByVal code As String, Optional ByVal Right As Long = 0, Optional ByVal BeginPass As String = vbNullString, Optional ByVal EndPass As String = vbNullString, Optional ByVal EmpId As String = vbNullString) As Boolean
为什么?
解决方案 »
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