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admin 发表于 2024-3-16 09:44:59

objectarx 定义块（BLOCK）

#include "dbmain.h"
#include "dbdict.h"

// 创建一个新的块定义
void CreateBlockDefinition(AcDbDatabase* pDb, const char* blockName, AcGePoint3d basePoint)
{
    // 打开或创建块字典
    AcDbDictionary *pBlockDict;
    Acad::ErrorStatus es = pDb->getSymbolTable(pBlockDict, AcDb::kForWrite, AcDb::kCreateIfNotFound, AcRxClass::cast<AcDbBlockTable>());
    if (es != Acad::eOk) return;

    // 创建新块记录
    AcDbBlockTableRecord* pNewBlock = new AcDbBlockTableRecord();
    es = pNewBlock->setName(blockName);
    if (es != Acad::eOk)
    {
      delete pNewBlock;
      return;
    }

    // 设置块基点
    pNewBlock->setBasePoint(basePoint, false);

    // 将新块记录添加至块字典
    es = pBlockDict->upgradeOpen();
    if (es == Acad::eOk)
    {
      es = pBlockDict->setAt(blockName, pNewBlock, AcDb::kTrue);
      pBlockDict->close();
    }

    // 关闭并提交新块记录
    pNewBlock->close();
    if (es != Acad::eOk)
    {
      pNewBlock->erase();
    }
}

// 示例使用
AcDbDatabase* pDb = acdbHostApplicationServices()->workingDatabase();
AcGePoint3d origin(0, 0, 0);
CreateBlockDefinition(pDb, "MyBlock", origin);

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