halcon基础数据类型详解#if defined(__CHAR_UNSIGNED__) || defined(__sgi)#define INT1 signed char /* integer, signed 1 Byte */#define INT1_MIN SCHAR_MIN#define INT1_MAX SCHAR_MAX#else#define INT1 char /* integer, signed 1 Byte */#define INT1_MIN CHAR_MIN#define INT1_MAX CHAR_MAX#endif#define UINT1 unsigned char /* integer, unsigned 1 Byte */#define UINT1_MIN 0#define UINT1_MAX UCHAR_MAX#define LONG_FORMAT _INT64_FORMATtypedef INT4_8 Hlong;typedef UINT4_8 Hulong;看粗体部分，可以看到Hlong型在32位的机器上其实就是long型代表4个字节32位，在64位机器上有另一种定义再来看看halcon中最重要的数据类型HTuple，在C++里面，halcon将HTuple类型封装了类，其始祖类HRootObject，这个类相当于MFC里面的CObject，halcon从HRootObject派生了HBaseArray，当然这两个类是虚基类，有一些方法需要我HTuple自己实现，当然也有一些方法可以直接用的。

这两个类在HCPPUtil里，可以看看。

HTuple类就是从HBaseArray派生，元组基类，相当于数组，具有如下的构造函数：HTuple(int l);HTuple(float f);HTuple(double d);HTuple(constchar *s);HTuple(const HCtrlVal&c);HTuple(const HTuple&in):HBaseArray() {CopyTuple(in);}HTuple(Hlong length, const HTuple&value);HTuple(const HTuple&length, const HTuple&value);HTuple(SpecialTuple d);HTuple对各种操作符进行了重载：operator HCtrlVal(void) const;HTuple operator () (Hlong min, Hlong max) const;HTuple operator () (const HTuple&min, const HTuple&max) const; HCtrlVal&operator [] (Hlong index);HCtrlVal operator [] (Hlong index) const;HCtrlVal&operator [] (const HTuple&index);HCtrlVal operator [] (const HTuple&index) const;HTuple&operator ++ (void); // nurfuer double und HlongHBool operator ! (void) const;HTuple operator~ (void) const;HTuple operator<< (const HTuple&val) const;HTuple operator<< (Hlongval) const;HTuple operator>> (const HTuple&val) const;HTuple operator>> (Hlongval) const;HTuple operator+ (const HTuple&val) const;HTuple operator+ (double val) const;HTuple operator+ (int val) const;在讲解halcon是如何维护这样一个HTuple中各种数据之前，先来看看这样一个类：class LIntExportHCtrlVal {friend class HTuple;public:HCtrlVal(void) {val.type = UndefVal; val.par.l = 0;}#if !defined(_TMS320C6X)HCtrlVal(Hlong l) {val.type = LongVal; val.par.l = l;}#endifHCtrlVal(int l) {val.type = LongVal; val.par.l = l;} HCtrlVal(double d) {val.type = DoubleVal; val.par.f = d;} HCtrlVal(constchar *s);HCtrlVal(const HCtrlVal&v) {CopyCtrlVal(v);}~HCtrlVal(void) {ClearCtrlVal();} HCtrlVal&operator = (const HCtrlVal&v);// Type conversionint ValType() const {return val.type;} operatorint(void) const {return I();}#if !defined(_TMS320C6X)operator Hlong(void) const {return L();}#endifoperatordouble(void) const {return D();} operatorconstchar*(void) const {return S();} operatorconst Hcpar&(void)const {return HCPAR();}// Access contentsdouble D() const;HlongL() const;int I() const;constchar * S() const;const Hcpar& HCPAR()const;// ArithmeticsHCtrlVal operator + (const HCtrlVal&val) const;HTuple operator + (const HTuple&val) const;HCtrlVal operator - (const HCtrlVal&val) const;HTuple operator - (const HTuple&val) const;HCtrlVal operator * (const HCtrlVal&val) const;HTuple operator * (const HTuple&val) const;HCtrlVal operator / (const HCtrlVal&val) const;HTuple operator / (const HTuple&val) const;HCtrlVal operator % (const HCtrlVal&val) const;HTuple operator % (const HTuple&val) const;HBool operator != (const HCtrlVal&val) const;HBool operator != (const HTuple&val) const;HBool operator == (const HCtrlVal&val) const;HBool operator == (const HTuple&val) const;HBool operator>= (const HCtrlVal&val) const;HBool operator>= (const HTuple&val) const;HBool operator<= (const HCtrlVal&val) const;HBool operator<= (const HTuple&val) const;HBool operator> (const HCtrlVal&val) const;HBool operator> (const HTuple&val) const;HBool operator< (const HCtrlVal&val) const;HBool operator< (const HTuple&val) const;constchar *ClassName(void) const { return"HCtrlVal"; }int Version(void) const;int Revision(void) const;constchar *Creation(void) const;private:// DataHcparval;// Value: one of the three types and type specifyer// Support operationenvoid ClearCtrlVal();void CopyCtrlVal(const HCtrlVal& source);};typedef struct{Hpar par; /* values */INT1 type; /* type flag */}Hcpar;/* parameter passing for the C interface */typedef union{INT4_8 l; /* 4/8 byte integer (input) */double f; /* 8 byte real(input) */char *s; /* pointer to strings(input) */} Hpar; /* parameter passing for the C interface */typedef union{INT4_8 *l; /* 4/8 byte integer (output) */double *f; /* 8 byte real(output) */char *s; /* pointer to strings(output) */VOIDP p; /* pointer to var. of any type (e.g.tuple)(output)*/} Hvar; /* parameter passing for the C interface */仔细看我用红色粗体并加大的部分，这四段代码可以说是halcon维护HTuple这种数据类型的精髓了。