社区 › C++ › 關閉圖層問題

lgq19851005 发表于 2009-5-12 18:54:00

關閉圖層問題

我在自己的程序前面建立了名为 1,2,3的图层,在不同的图层绘制了不同的实体.
在某一步时,我想关闭图层1和2,只显示图层3的实体,请问如何用objectarx实现,谢谢

松竹 发表于 2009-5-16 09:17:00

遍历图层表的记录，使用AcDbLayerTableRecord 对象的void setIsOff(bool off);
关闭图层

luowy 发表于 2009-5-16 12:21:00

复制代码复制代码复制代码void fun()
{
AcDbLayerTable *pLayerTable;
acdbHostApplicationServices()->workingDatabase()->getLayerTable( pLayerTable, AcDb::kForRead );
AcDbLayerTableIterator *pItr;
AcDbLayerTableRecord *pLayerTableRecord;
ACHAR *layerName;
pLayerTable->newIterator( pItr );
for ( pItr->start(); !pItr->done(); pItr->step() )
{
pItr->getRecord( pLayerTableRecord, AcDb::kForWrite );
pLayerTableRecord->getName( layerName );
if ( _tcscmp( layerName, _T("1")) == 0 || _tcscmp( layerName, _T("2")) ==0 )
{
   pLayerTableRecord->setIsOff( true );
}
if ( _tcscmp( layerName, _T("3")) == 0 )
{
   pLayerTableRecord->setIsOff( false );
}
pLayerTableRecord->close();
free( layerName );
}
delete pItr;
pLayerTable->close();
}

liub1979 发表于 2009-5-18 21:53:00

再贴一个，希望对你有帮助
Adesk::Boolean SetIsOff (const char* lyrname,
          bool off)
{
AcDbLayerTable *pLyrTable;
AcDbLayerTableRecord *pLyrTblRecord;

AcDbDatabase *pCurDb = NULL;
pCurDb = acdbHostApplicationServices()->workingDatabase();

// 获得当前图形的层表
pCurDb->getLayerTable(pLyrTable, AcDb::kForRead);
AcDbObjectId lyrId;
// 是否已经包含指定的层表记录
if (!pLyrTable->has(lyrname) && !(lyrname == "*"))
{
pLyrTable->close();
return Adesk::kFalse;
}
else
{
pLyrTable->getAt(lyrname, lyrId);
}
AcDbLayerTableIterator *pItr;
pLyrTable->newIterator(pItr);
if (lyrname == "*")
{
for (pItr->start(); !pItr->done(); pItr->step())
{ // 遍历器记录
   pItr->getRecord(pLyrTblRecord, AcDb::kForWrite);
   pLyrTblRecord->setIsOff(off);
   pLyrTblRecord->close();
}
}
else
{
for (pItr->start(); !pItr->done(); pItr->step())
{ // 遍历器记录
   if(pItr->seek(lyrId) == Acad::eOk)
   {
    pItr->getRecord(pLyrTblRecord, AcDb::kForWrite);
    pLyrTblRecord->setIsOff(off);
    pLyrTblRecord->close();
    break;
   }
}
}
delete pItr;

pLyrTable->close();
return Adesk::kTrue;
}

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