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ARX动态块相关操作

image-20240322164856228

第一个直接传入块参照的id即可创建AcDbDynBlockReference对象，便可对该块参照进行数据获取和修改。 第二个传入的是块参照的指针，如果该指针是以读打开的，该AcDbDynBlockReference对象只能进行数据读取，不能修改该块参照。

得到动态块参照的自定义属性

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std::map<CString, CString>  GetCustomParam(const AcDbObjectId& idBlkRef)
{
    std::map<CString, CString> mapName;

    AcDbDynBlockReferencePropertyArray DynBlkRefPropArray;  //动态块参照属性数组
    AcDbDynBlockReference DynBlkRef(idBlkRef);          //动态块参照对象
    DynBlkRef.getBlockProperties(DynBlkRefPropArray);
    AcDbDynBlockReferenceProperty DynBlockReferenceProp;    //动态块参照属性

    for (int i = 0; i < DynBlkRefPropArray.length(); i++)
    {
        DynBlockReferenceProp = DynBlkRefPropArray.at(i);

        bool bShow = DynBlockReferenceProp.show();          //是否在面板中显示
        auto type = DynBlockReferenceProp.propertyType();   //属性类型
        CString strName = DynBlockReferenceProp.propertyName().kwszPtr();   //属性名
        if (true == bShow)
        {

            CString strValue;
            AcDbEvalVariant value = DynBlockReferenceProp.value();//值
            if (DwgDataType::kDwgText == type)
            {
                strValue = value.resval.rstring;
            }
            else if (DwgDataType::kDwgReal == type)
            {
                strValue.Format(_T("%.2f"), value.resval.rreal);
            }
            mapName[strName] = strValue;
        }
    }
    return mapName;
}

其中，AcDbDynBlockReferenceProperty::value函数只能得到该属性当前设置的值。 对于多种数据这种情况，可以使用AcDbDynBlockReferenceProperty::getAllowedValues函数。

设置块参照的自定义属性

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bool SetCustomParam(const AcDbObjectId& idBlkRef,const std::map<CString, CString>& mapParam)
{
    AcDbDynBlockReferencePropertyArray DynBlkRefPropArray;  //动态块参照属性数组
    AcDbDynBlockReference DynBlkRef(idBlkRef);          //动态块参照对象
    DynBlkRef.getBlockProperties(DynBlkRefPropArray);
    AcDbDynBlockReferenceProperty DynBlockReferenceProp;    //动态块参照属性

    std::map<CString, CString>::const_iterator iter;
    for (iter = mapParam.begin(); iter != mapParam.end(); ++iter)
    {
        CString strKey = iter->first;
        CString strValue = iter->second;
        for (int i = 0; i < DynBlkRefPropArray.length(); i++)
        {
            DynBlockReferenceProp = DynBlkRefPropArray.at(i);

            bool bShow = DynBlockReferenceProp.show();          //是否在面板中显示
            if (false == bShow && DynBlockReferenceProp.readOnly() == true)
                continue;
            CString strName = DynBlockReferenceProp.propertyName().kwszPtr();   //属性名
            if (strName != strKey)
                continue;
            auto type = DynBlockReferenceProp.propertyType();   //属性类型
            if (DwgDataType::kDwgText == type)
            {
                AcDbEvalVariant value(strValue);
                DynBlockReferenceProp.setValue(value);
            }
            else if (DwgDataType::kDwgReal == type)
            {
                AcDbEvalVariant value(_wtof(strValue));
                DynBlockReferenceProp.setValue(value);
            }
        }
    }

    return true;
}