试图更改CAD文件中数字标注内容时出错（附源码）

zackary · 发表于 2007-12-16 16:24:00

试图更改CAD文件中数字标注内容时出错,源码如下：
//打开数据库
AcDbBlockTable *pBlockTable;
acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTable,AcDb::kForWrite);
AcDbBlockTableRecord *pBlockTableRecord;
pBlockTable->getAt(ACDB_MODEL_SPACE,pBlockTableRecord,AcDb::kForWrite);
pBlockTable->close();
AfxMessageBox("open model space");
//创建块表记录遍历器，用遍历器遍历实体，并修改标注值。
AcDbRotatedDimension *pDimention;
char* Texttemp;
ACHAR* Astr;
Astr="111";
AcDbBlockTableRecordIterator *pBlockIterator;
pBlockTableRecord->newIterator(pBlockIterator);
for(pBlockIterator->start();!pBlockIterator->done();pBlockIterator->step())
{
  AcDbEntity *pEntity;
  pBlockIterator->getEntity(pEntity,AcDb::kForWrite);
  const char *pCname=pEntity->isA()->name();
  if(strcmp(pCname,"AcDbRotatedDimension")==0)
  {
   pDimention=AcDbRotatedDimension::cast(pEntity);
   Texttemp=pDimention->dimensionText();
   if(strcmp(Texttemp,"e")==0)
   {
         AfxMessageBox("found linedim");
         pDimention->setDimensionText(Astr);
   }
  }
}
delete pBlockIterator;
pBlockTableRecord->close();
出错提示：内部错误：
是不是CAD文件在打开时，不能用ARX修改实体。
期盼高手指点！！！

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