获得属性块的所有属性值

ObjectARX

1. #include <dbobjptr.h>
   
2. void PrintBlockAttributes()
   
3. {
   
4.   // get the current database
   
5.   AcDbDatabase* pDb = acdbHostApplicationServices()->workingDatabase();
   
6.   assert(pDb);
   
7. 
   
8.   // in this sample we will only process block references in model space;
   
9.   // it is also possible to have block references in paper space
   
10.   // but I will leave it up to you to update the code to do so
    
11.   AcDbBlockTableRecordPointer pModelSpace(ACDB_MODEL_SPACE, pDb, AcDb::kForRead);
    
12.   assert(pModelSpace.openStatus() == Acad::eOk);
    
13. 
    
14.   // request an iterator for the entities in the block table record
    
15.   AcDbBlockTableRecordIterator *pIterator;
    
16.   pModelSpace->newIterator(pIterator);
    
17. 
    
18.   // iterate through each entity
    
19.   for( ; !pIterator->done(); pIterator->step())
    
20.   {
    
21.     AcDbObjectId id;
    
22.     pIterator->getEntityId(id);
    
23.     // we are only interested in block references;
    
24.     // ignore anything else
    
25.     AcDbObjectPointer<AcDbBlockReference> pBlockReference(id, AcDb::kForRead);
    
26.     if (pBlockReference.openStatus() != Acad::eOk)
    
27.       continue;
    
28. 
    
29.     // lets request the block reference for an attribute iterator
    
30.     AcDbObjectIterator *pAttributeIterator = NULL;
    
31.     pAttributeIterator = pBlockReference->attributeIterator();
    
32. 
    
33.     // iterate through each attribute and print its value
    
34.     for( ; !pAttributeIterator->done(); pAttributeIterator->step())
    
35.     {
    
36.       AcDbObjectId attributeId = pAttributeIterator->objectId();
    
37.       // open the attribute
    
38.       AcDbAttribute *pAttribute;
    
39.       Acad::ErrorStatus es = pBlockReference->openAttribute(pAttribute, attributeId, AcDb::kForRead);
    
40.       // finally; we are at a point where we have access tothe
    
41.       // value of the attribute -- for now, simply display it
    
42. 
    
43.       // AcDbAttribute is derived from AcDbText where the tag
    
44.       // value is stored
    
45.       ACHAR *pTag = pAttribute->tag();
    
46.       assert(pTag != NULL);
    
47. 
    
48.       ACHAR *pValue = pAttribute->textString();
    
49.       assert(pValue != NULL);
    
50. 
    
51.       // display
    
52.       acutPrintf(L"Tag: %s = Value: %s\n", pTag, pValue);
    
53. 
    
54.       // we no longer need this attribute so lets close it
    
55.       // and clean up the memory
    
56.       pAttribute->close();
    
57.       delete [] pTag;
    
58.       delete [] pValue;
    
59.     }
    
60. 
    
61.     // it is the programmer's responsibility to delete the
    
62.     // attribute iterator
    
63.     delete pAttributeIterator;
    
64.   }
    
65. 
    
66.   // it is the programmer's responsibility to delete the
    
67.   // block table record iterator
    
68.   delete pIterator;
    
69. }
    

#include <dbobjptr.h><br /> void PrintBlockAttributes()<br /> {<br />   // get the current database<br />   AcDbDatabase* pDb = acdbHostApplicationServices()->workingDatabase();<br />   assert(pDb);<br /> <br />   // in this sample we will only process block references in model space;<br />   // it is also possible to have block references in paper space<br />   // but I will leave it up to you to update the code to do so<br />   AcDbBlockTableRecordPointer pModelSpace(ACDB_MODEL_SPACE, pDb, AcDb::kForRead);<br />   assert(pModelSpace.openStatus() == Acad::eOk);<br /> <br />   // request an iterator for the entities in the block table record<br />   AcDbBlockTableRecordIterator *pIterator;<br />   pModelSpace->newIterator(pIterator);<br /> <br />   // iterate through each entity<br />   for( ; !pIterator->done(); pIterator->step())<br />   {<br />     AcDbObjectId id;<br />     pIterator->getEntityId(id);<br />     // we are only interested in block references;<br />     // ignore anything else<br />     AcDbObjectPointer<AcDbBlockReference> pBlockReference(id, AcDb::kForRead);<br />     if (pBlockReference.openStatus() != Acad::eOk)<br />       continue;<br /> <br />     // lets request the block reference for an attribute iterator<br />     AcDbObjectIterator *pAttributeIterator = NULL;<br />     pAttributeIterator = pBlockReference->attributeIterator();<br /> <br />     // iterate through each attribute and print its value<br />     for( ; !pAttributeIterator->done(); pAttributeIterator->step())<br />     {<br />       AcDbObjectId attributeId = pAttributeIterator->objectId();<br />       // open the attribute<br />       AcDbAttribute *pAttribute;<br />       Acad::ErrorStatus es = pBlockReference->openAttribute(pAttribute, attributeId, AcDb::kForRead);<br />       // finally; we are at a point where we have access tothe<br />       // value of the attribute -- for now, simply display it<br /> <br />       // AcDbAttribute is derived from AcDbText where the tag<br />       // value is stored<br />       ACHAR *pTag = pAttribute->tag();<br />       assert(pTag != NULL);<br /> <br />       ACHAR *pValue = pAttribute->textString();<br />       assert(pValue != NULL);<br /> <br />       // display<br />       acutPrintf(L"Tag: %s = Value: %s\n", pTag, pValue);<br /> <br />       // we no longer need this attribute so lets close it<br />       // and clean up the memory<br />       pAttribute->close();<br />       delete [] pTag;<br />       delete [] pValue;<br />     }<br /> <br />     // it is the programmer's responsibility to delete the<br />     // attribute iterator<br />     delete pAttributeIterator;<br />   }<br /> <br />   // it is the programmer's responsibility to delete the<br />   // block table record iterator<br />   delete pIterator;<br /> }<br />

bigwolf2

感谢分享,学习一下先