ARX如何保存图层要素为DWG文件

FKW456

如题，类似CAD中的保存功能，有没有相似的例子

marting

WBLOCK 了。

newer

AcDbDatabase::wblock Function

Acad::ErrorStatus

wblock(

AcDbDatabase* pOutputDb,

const AcDbObjectIdArray& outObjIds,

const AcGePoint3d& basePoint,

AcDb::DuplicateRecordCloning drc);

pOutputDb	Input pointer to an existing AcDbDatabase
outObjIds	Input array of object IDs of all objects to be wblocked out
basePoint	Input base point (in WCS coordinates for pOutputDb) to be used in pOutputDb
drc	Input desired DuplicateRecordCloning type

This method uses the wblockClone() mechanism to write the array of objects specified by outObjIds to the model space block table record of the database pointed to by pOutputDb, using basePoint as the base point value for pOutputDb.
The AcDbDatabase pointed to by pOutputDb must contain a header and symbol tables. Thus, if it was created with the AcDbDatabase constructor's buildDefaultDrawing argument set to false, a drawing must have already been read into it in order to populate it with a header and symbol tables.
The drc value determines what happens if symbols or dictionary entries are cloned when one or more duplicates already exist in the destination database. drc must keep the same setting in multiple calls, and can be only one of the following:

AcDb::kDrcIgnore	If a duplicate is found, ignore the clone, and continue to use the existing record in the destination database. This is how the INSERT command and the AcDbDatabase::insert() function operate.
AcDb::kDrcReplace	If a duplicate is found, replace it with the cloned record.
AcDb::kDrcMangleName	Mangle all the incoming record names. The mangling ensures unique names. This is how the REFEDIT command works.
AcDb::kDrcUnmangleName	Primarily used by REFEDIT when it checks the records back into the origin database. Any mangling done by kDrcMangleName is undone, and then it defaults to kDrcIgnore. In other words, if a duplicate is found after removing the manging, AutoCAD continues to use the existing record, and ignores the cloned one.

Returns Acad::eOk if operation is successful.
Returns Acad::eInvalidInput if drc is not one of the four valid types.
See the BASE command documentation in the AutoCAD online help for more information on base point.

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Acad::ErrorStatus

wblock(

AcDbDatabase*& pOutputDb,

const AcDbObjectIdArray& outObjIds,

const AcGePoint3d& basePoint);

pOutputDb	Returns pointer to the database that was written to
outObjIds	Input array of objectId entities of all objects to be wblocked out
basePoint	Input base point (in WCS coordinates for pOutputDb) to be used in pOutputDb

Creates a new AcDbDatabase object, sets pOutputDb to point to it, and then uses the wblockClone mechanism to write the array of objects specified by outObjId entities out to the Model Space block table record of the database pointed to by pOutputDb, using basePoint as the base point value for pOutputDb.
The calling application is responsible for deallocating (via the C++ delete operator) the AcDbDatabase object that pOutputDb is set to point to.
Returns Acad::eOk if operation is successful.
See the BASE command documentation in the AutoCAD online help for more information on base point.