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HALCON的HTuple类型(元组)功能很强大，可以表示INT、double、string等多种类型数据。当元组中只有一个成员时，HTuple也可表示原子类型

1. haclon -> C++

//HTuple转int
HTuple hTuple = 1;
int data1 =  hTuple[0].I();         // data1 = 1//HTuple转double   常用
HTuple hTuple = 1.1;
double data2 = hTuple[0].D();       // data2 = 1.1//HTuple转CString
HTuple hTuple = "cstring";
CString str3 = hTuple[0].S();      // str3 = "cstring"

2. C++ -> halcon

int data1= 1;
double data2 = 1.1;
CString str3 = "CString";
QString str4 = "QString";HTuple hTuple2;
hTuple2[0] = data1;                        // hTuple2[0].I() = 1
hTuple2[1] = data2;                        // hTuple2[1].D() = 1.1
hTuple2[2] = str3.GetBuffer();            // hTuple2[2].S() = "CString"
hTuple2[3] = str4.toStdString().c_str();  // hTuple2[3].S() = "QString"int i = hTuple2[0].I();                   // i=1
double d = hTuple2[1].D();                // d=1.1
CString cstring = hTuple2[2].S();         // cstring = "CString"
QString qstring = hTuple2[3].S();         // qstring = "QString"