用c++进行nx二次开发，遍历实体上所有的孔，并读取其原点、深度、直径等信息

在进行 NX 二次开发时，可以使用 NX Open API 来获取实体上所有的孔，并读取其原点、深度、直径等信息。以下是一个示例代码：

#include <iostream>
#include <NXOpen/NXException.hxx>
#include <NXOpen/Part.hxx>
#include <NXOpen/PartCollection.hxx>
#include <NXOpen/Features_Feature.hxx>
#include <NXOpen/Features_FeatureCollection.hxx>
#include <NXOpen/Features_Hole.hxx>
#include <NXOpen/Features_HoleCollection.hxx>
#include <NXOpen/Features_FeatureUtilities.hxx>
#include <NXOpen/Point.hxx>
#include <NXOpen/Point3d.hxx>
#include <NXOpen/Expression.hxx>
#include <NXOpen/ExpressionCollection.hxx>

using namespace NXOpen;

void TraverseHoles(Part* part)
{
    try
    {
        // 获取所有的孔特征
        Features::FeatureCollection* features = part->Features();
        Features::HoleCollection* holes = features->Holes();

        int numHoles = holes->Count();

        std::cout << "Total number of holes: " << numHoles << std::endl;

        // 遍历每个孔特征
        for (int i = 0; i < numHoles; ++i)
        {
            Features::Hole* hole = dynamic_cast<Features::Hole*>(holes->GetItem(i));

            if (hole != NULL)
            {
                std::cout << "Hole " << i + 1 << ":" << std::endl;

                // 获取孔的初始点坐标
                Point3d origin = hole->Origin();

                std::cout << "Origin: (" << origin.X() << ", " << origin.Y() << ", " << origin.Z() << ")" << std::endl;

                // 获取孔的深度
                Expression* depthExpr = hole->Depth();
                std::cout << "Depth: " << depthExpr->Value()->ExpressionText() << std::endl;

                // 获取孔的直径
                Expression* diameterExpr = hole->Diameter();
                std::cout << "Diameter: " << diameterExpr->Value()->ExpressionText() << std::endl;

                std::cout << std::endl;
            }
        }

        // 释放内存
        features->Dispose();
        holes->Dispose();
    }
    catch (NXException& ex)
    {
        std::cerr << "Error: " << ex.Message() << std::endl;
    }
}

int main(int argc, char* argv[])
{
    Part* workPart = NULL;
    Part* displayPart = NULL;

    // 获取当前工作部件
    try
    {
        workPart = dynamic_cast<Part*>(Session::Parts()->Work());
    }
    catch (NXException& ex)
    {
        std::cerr << "Error: " << ex.Message() << std::endl;
    }

    if (workPart == NULL)
    {
        std::cerr << "Error: No active part found." << std::endl;
        return 1;
    }

    // 遍历孔特征
    TraverseHoles(workPart);

    return 0;
}

上述代码首先获取当前工作部件，然后使用 NX Open API 获取该部件上的所有孔特征。接着，遍历每个孔特征，获取其原点、深度和直径等信息，并输出到控制台。最后释放内存。

需要注意的是，上述代码只是一个示例，实际应用中可能需要进行更多的错误处理和数据验证。