ObjectARX实现炸开当前图纸中所有多重插入块
在AutoCAD ObjectARX中，要实现炸开当前图纸中所有多重插入块（即MInsertBlock，也称为阵列块或多行多列插入块）的功能，你需要编写一个递归函数来处理嵌套的块参照，并确保正确地处理所有子块。以下是一个简化的示例代码：#include "dbmain.h"
#include "acdb.h"
#include "aced.h"
// 定义一个辅助函数来递归地炸开块参照及其包含的所有子块
void RecursiveExplodeBlock(AcDbBlockReference* blkRef)
{
AcDbIdMapping idMap;
Acad::ErrorStatus es;
// 炸开当前块参照
es = blkRef->explode(idMap);
if (es != Acad::eOk)
{
acutPrintf("Failed to explode block reference.\n");
return;
}
// 遍历生成的新对象并处理可能的嵌套块
AcDbVoidPtrArray entitySet;
idMap.getMap().getObjects(entitySet);
for (int i = 0; i < entitySet.length(); ++i)
{
AcDbEntity* pEnt = static采用cast<AcDbEntity*>(entitySet);
if (pEnt->isKindOf(AcDbBlockReference::desc()))
{
AcDbBlockReference* subBlkRef = AcDbBlockReference::cast(pEnt);
RecursiveExplodeBlock(subBlkRef); // 递归调用炸开子块
}
}
}
// 炸开当前图纸中所有多重块
void ExplodeAllMultiInsertBlocksInCurrentDrawing()
{
AcDbDatabase* db = acdbHostApplicationServices()->workingDatabase();
// 开始事务
AcTransaction trans;
trans.start();
// 遍历模型空间
AcDbBlockTable* blockTable;
Acad::ErrorStatus es = db->getSymbolTable(blockTable, AcDb::kForRead);
if (es == Acad::eOk)
{
AcDbBlockTableRecord* modelSpace;
es = blockTable->getAt(ACDB采用MODEL采用SPACE, modelSpace, AcDb::kForWrite);
if (es == Acad::eOk)
{
AcDbObjectIdArray objectsInModelSpace;
modelSpace->getBlockReferences(objectsInModelSpace);
for (int i = 0; i < objectsInModelSpace.length(); ++i)
{
AcDbObjectPointer<AcDbBlockReference> blkRef(objectsInModelSpace, AcDb::kForWrite);
if (blkRef.openStatus() == Acad::eOk && blkRef->isMInsertBlock())
{
RecursiveExplodeBlock(blkRef.object());
}
}
modelSpace->close();
}
blockTable->close();
}
// 如果需要，同样遍历布局空间并进行相同操作
// 提交事务
trans.commit();
}
// 在主程序入口处调用
void main()
{
acedInitCmds();
ExplodeAllMultiInsertBlocksInCurrentDrawing();
}
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