[每日一码] （7）在ARX里模拟INSERT命令实现代码替代acedCommand调用的解决方案

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1. //----- Read the external DWG file
2. AcDbDatabase *pDwg =new AcDbDatabase (Adesk::kFalse) ;
3. pDwg->readDwgFile (采用T("c:\\drawing1.dwg")) ;
4. //----- Put it into a block table record of the current database
5. AcDbObjectId id ;
6. Acad::ErrorStatus es = acdbHostApplicationServices()->workingDatabase()->insert(id, 采用T("drawing1"), pDwg, Adesk::kFalse) ;
7. if ( es != Acad::eOk )
8. acutPrintf (采用T("\nError inserting a block.")) ;
9. delete pDwg ;
10. As soon as you have a block table record in place you can add an AcDbBlockReference with it. The block reference is the INSERT'ed block table record instance that is displayed in the model or paper space. The below example shows how to create a block reference with attributes from a block table record. You can call it following above code like this:
11. AcGePoint3d point3D(0,0,0);
12. addBlockWithAttributes(id,point3D);
14. //NOTE: You will have to update the code to properly set the attribute values. The code below sets the value of each attribute to "XXX".
15. static void addBlockWithAttributes (AcDbObjectId blockId, AcGePoint3d basePoint) {
16. //----- Step 1: Allocate a block reference object
17. AcDbBlockReference *pBlkRef =new AcDbBlockReference ;
18. //----- Step 2: Set up the block reference to the newly
19. //----- created block definition
20. pBlkRef->setBlockTableRecord (blockId) ;
21. //---- Give it the current UCS normal.
22. pBlkRef->setPosition (basePoint) ;
23. pBlkRef->setRotation (0.0) ;
24. pBlkRef->setNormal (AcGeVector3d (0.0, 0.0, 1.0)) ;
25. //----- Step 3: Open current database's Model Space
26. //----- blockTableRecord
27. AcDbBlockTable *pBlockTable ;
28. acdbHostApplicationServices()->workingDatabase()->getBlockTable (pBlockTable, AcDb::kForRead) ;
29. AcDbBlockTableRecord *pBlockTableRecord ;
30. pBlockTable->getAt (ACDB采用MODEL采用SPACE, pBlockTableRecord,
31.   AcDb::kForWrite) ;
32. pBlockTable->close () ;
33. //----- Append the block reference to the model space
34. //----- block table record
35. AcDbObjectId newEntId ;
36. pBlockTableRecord->appendAcDbEntity (newEntId, pBlkRef) ;
37. pBlockTableRecord->close () ;
38. //----- Step 4: Open the block definition for read
39. AcDbBlockTableRecord *pBlockDef ;
40. acdbOpenObject (pBlockDef, blockId, AcDb::kForRead) ;
41. AcDbBlockTableRecordIterator *pIterator ;
42. pBlockDef->newIterator (pIterator) ;
43. AcDbEntity *pEnt ;
44. AcDbAttributeDefinition *pAttdef ;
45. for ( pIterator->start () ; !pIterator->done() ; pIterator->step () ) {
46.   //----- Get the next entity
47.   pIterator->getEntity (pEnt, AcDb::kForRead) ;
48.   //----- Make sure the entity is an attribute definition
49.   //----- and not a constant
50.   pAttdef =AcDbAttributeDefinition::cast (pEnt) ;
51.   if ( pAttdef != NULL && !pAttdef->isConstant () ) {
52.    //----- We have a non-constant attribute definition
53.    //----- so build an attribute entity
54.    AcDbAttribute *pAtt =new AcDbAttribute ;
55.    pAtt->setPropertiesFrom (pAttdef) ;
56.    pAtt->setInvisible (pAttdef->isInvisible ()) ;
57.    //----- Translate attribute by block reference.
58.    //----- To be really correct, entire block
59.    //----- reference transform should be applied here.
60.    basePoint =pAttdef->position () ;
61.    basePoint +=pBlkRef->position ().asVector () ;
62.    pAtt->setPosition (basePoint) ;
63.    pAtt->setHeight (pAttdef->height ()) ;
64.    pAtt->setRotation (pAttdef->rotation ()) ;
65.    pAtt->setTag (采用T("Tag")) ;
66.    pAtt->setFieldLength (25) ;
67.    TCHAR *pStr =pAttdef->tag () ;
68.    pAtt->setTag (pStr) ;
69.    delete pStr ;
70.    pAtt->setFieldLength (pAttdef->fieldLength ()) ;
71.    //----- Database Column value should be displayed
72.    //----- INSERT would prompt for this...
73.    pAtt->setTextString (采用T("XXX")) ;
74.    //----- Set Alignments
75.    pAtt->setHorizontalMode( pAttdef->horizontalMode ()) ;
76.    pAtt->setVerticalMode (pAttdef->verticalMode ()) ;
77.    pAtt->setAlignmentPoint (
78.     pAttdef->alignmentPoint ()
79.     + pBlkRef->position ().asVector ()
80.     ) ;
81.    //----- Insert the attribute in the DWG
82.    AcDbObjectId attId ;
83.    pBlkRef->appendAttribute (attId, pAtt) ;
84.    pAtt->close () ;
85.   }     
86.   pEnt->close () ; //----- Use pEnt... pAttdef might be NULL
87. }
88. delete pIterator ;
89. pBlockDef->close () ;
90. pBlkRef->close () ;
91. }

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