objectarx 定义块（BLOCK）

admin

1. #include "dbmain.h"
2. #include "dbdict.h"
4. // 创建一个新的块定义
5. void CreateBlockDefinition(AcDbDatabase* pDb, const char* blockName, AcGePoint3d basePoint)
6. {
7.     // 打开或创建块字典
8.     AcDbDictionary *pBlockDict;
9.     Acad::ErrorStatus es = pDb->getSymbolTable(pBlockDict, AcDb::kForWrite, AcDb::kCreateIfNotFound, AcRxClass::cast<AcDbBlockTable>());
10.     if (es != Acad::eOk) return;
12.     // 创建新块记录
13.     AcDbBlockTableRecord* pNewBlock = new AcDbBlockTableRecord();
14.     es = pNewBlock->setName(blockName);
15.     if (es != Acad::eOk)
16.     {
17.         delete pNewBlock;
18.         return;
19.     }
21.     // 设置块基点
22.     pNewBlock->setBasePoint(basePoint, false);
24.     // 将新块记录添加至块字典
25.     es = pBlockDict->upgradeOpen();
26.     if (es == Acad::eOk)
27.     {
28.         es = pBlockDict->setAt(blockName, pNewBlock, AcDb::kTrue);
29.         pBlockDict->close();
30.     }
32.     // 关闭并提交新块记录
33.     pNewBlock->close();
34.     if (es != Acad::eOk)
35.     {
36.         pNewBlock->erase();
37.     }
38. }
40. // 示例使用
41. AcDbDatabase* pDb = acdbHostApplicationServices()->workingDatabase();
42. AcGePoint3d origin(0, 0, 0);
43. CreateBlockDefinition(pDb, "MyBlock", origin);

复制代码