NXOpen 遍历部件的Number表达式 根据表达式名过虑得到对应的值

// Mandatory UF Includes
#include <uf.h>
#include <uf_object_types.h>

// Internal Includes
#include <NXOpen/ListingWindow.hxx>
#include <NXOpen/NXMessageBox.hxx>
#include <NXOpen/UI.hxx>

// Internal+External Includes
#include <NXOpen/Annotations.hxx>
#include <NXOpen/Assemblies_Component.hxx>
#include <NXOpen/Assemblies_ComponentAssembly.hxx>
#include <NXOpen/Body.hxx>
#include <NXOpen/BodyCollection.hxx>
#include <NXOpen/Face.hxx>
#include <NXOpen/Line.hxx>
#include <NXOpen/NXException.hxx>
#include <NXOpen/NXObject.hxx>
#include <NXOpen/Part.hxx>
#include <NXOpen/PartCollection.hxx>
#include <NXOpen/Session.hxx>

#include <NXOpen/BasePart.hxx>
#include <NXOpen/Expression.hxx>
#include <NXOpen/ExpressionCollection.hxx>

#include <NXOpen/AttributeManager.hxx>
#include <NXOpen/AttributePropertiesBaseBuilder.hxx>
#include <NXOpen/AttributePropertiesBuilder.hxx>

//用户代码

void MyClass::do_it()
{

theSession->ListingWindow()->Open();//打开信息窗口

Session *theSession = Session::GetSession();//获取绘画客口
Part *workPart(theSession->Parts()->Work());//获取工作部件
Part *displayPart(theSession->Parts()->Display());//获取显示部件

//BasePart *baseworkpart = theSession->Parts()->BaseWork();//定义baseworkpart
BasePart *basedisplaypart = theSession->Parts()->BaseDisplay();//定义basedisplaypart
//遍历实例
Assemblies::ComponentAssembly *componentassembly = basedisplaypart->ComponentAssembly();//获取装配底层（BaseWork为当前工作装配，basedisplaypart为当前显示的装配 两种结果是不一样的）
Assemblies::Component *rootcomponent = componentassembly->RootComponent();//获取rootcomponent

if (rootcomponent==NULL)//判断rootcomponent是否为空，空即提示不是装配，是就执行遍历
{
//弹出消息框（四种消息框 错误：DialogTypeError 警告：DialogTypeWarning 提示：DialogTypeInformation 询问：DialogTypeQuestion
theUI->NXMessageBox()->Show("提示", NXOpen::NXMessageBox::DialogTypeWarning, "当前没在装配环境!"); //弹出消息框提示
}
else//
{
//theSession->ListingWindow()->WriteLine(rootcomponent->DisplayName()+" ");//信息窗口写入主装配 名字

getchildren(rootcomponent);

}

}

void MyClass::getchildren(Assemblies::Component *root)
{

//用户代码
std::vector<Assemblies::Component *> children = root->GetChildren();//获取第一层Component

//表达式相关的定义
std::vector<NXString> expression1NameNXString1 ;
std::vector<int> expression1Value1;
const char* expression1Name;
char expression1Value2[256];

for (int i = 0 ; i<children.size();i++)

{
Assemblies::Component *component = children[i];//获取第一层第i个Component

//判断部件加载状态
bool isloading = true;
Part *resCurrentProtype = dynamic_cast<Part *>(children[i]->Prototype());

if(resCurrentProtype == NULL)
{
isloading = false;// 不加载为false 全加载和部份加载为true
}
//遍历表达式
if ( isloading == true )
{
NXOpen::Part *part2 = dynamic_cast<Part *>(children[i]->Prototype()); //component强制转换为part
std::vector<Expression *> exprs = part2->Expressions()->GetVisibleExpressions();
Expression *expression1;

for (size_t k = 0; k < exprs.size(); k++)
{
expression1 = dynamic_cast<Expression *>(exprs[k]);
expression1NameNXString1.push_back(expression1->Name());
expression1Value1.push_back(expression1->Value());
expression1Name = expression1NameNXString1[k].GetLocaleText();
if (!strcmp(expression1Name ,"SCREW_DIA") )
{
sprintf (expression1Value2,"%d",expression1Value1[k]);
theSession->ListingWindow()->WriteLine(children[i]->DisplayName()+"表达式："+expression1NameNXString1[k]+"="+expression1Value2);

}

}
}

getchildren(component);

}

}