                                  DecBarPDF417 ̬ӿʹ˵
                    

   
   DecBarPDF417.dll̬ӿ⣬ԽPDF417ά룬windowsߡ
֧BMP JPG TIFʽ

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(C++)
	long  __stdcall Dec(char* szBarFileName, unsigned char* byDecData, long nLen);
˵:szBarFileName  PDF417ĶάͼƬ
	 byDecData  	 ݵı  BYTE Ԥȷռ  
	 nLen		byDecDataĳ 
ֵ:	 retVal	>0 ɹ󷵻صݳ
		0 ʧ
		-2 BYTEռ䲻

:
	BYTE byData[1024];
	ZeroMemory(byData, 1024);
	long nRet = Dec("barcode.bmp", byData, 1024);	
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(VB)
Private Declare Function Dec Lib "DecBarPDF417.dll" _
(ByVal szBarFileName As String, ByRef byDecData As Byte, ByVal nLen As Long) As Long


Dim data(0 To 1024) As Byte
Dim ret As Long
ret = Dec("barcode.BMP", data(0), UBound(data) - LBound(data) + 1)
If ret <=0  Then
    Text1.Text = ""
    MsgBox "ʧ"
    Exit Sub
End If
Text1.Text = StrConv(data, vbUnicode)



ʾ:
10ֽ