Malcon支持多種二維碼類型，QR Code,DataMatrix ,PDF 417,RSS等等；
下邊講解一下步驟：
1、讀取圖片ReadImage
2、創建相對應的條碼類型的句柄CreateDataCode2dModel
3、設置條碼參數SetDataCode2dParam
4、查找條碼：輸出條碼信息FindDataCode2d
5、設置顯示字體SetDisplayFont
6、顯示條碼信息DispMessage
7、清除條碼句柄ClearDataCode2dModel
ReadImage(srcImage,'DATA_MATRIX_HINT0.bmp')
CreateDataCode2dModel('Data Matrix ECC 200',' ',' ',CodeHandle)
SetDataCode2dParam(CodeHandle,'polarity','light_on_dark')
FindDataCode2d(srcImage,symbolXld,CodeHandle,' ',' ',ResultHandle,DateString)
SetDisplayFont(3600,26,' ','true','false')
DispMessage(3600,DateString,' ',0,0,'red','true')
ClearDataCode2dModel(CodeHandle)
