Creating a Dictionary

The following example creates a new dictionary (ASDK_DICT) and adds it to the named object dictionary. Then it creates two new objects of the custom class AsdkMyClass (derived from AcDbObject) and adds them to the dictionary using the setAt() function.

Note: You need to close the objects after adding them with the setAt() function.

// This function creates two objects of class AsdkMyClass. 
// It fills them in with the integers 1 and 2, and then adds 
// them to the dictionary associated with the key ASDK_DICT. If this
// dictionary doesn't exist, it is created and added to the named
// object dictionary.
//
void
createDictionary()
{
    AcDbDictionary *pNamedobj;
    acdbHostApplicationServices()->workingDatabase()->
        getNamedObjectsDictionary(pNamedobj, AcDb::kForWrite);
    // Check to see if the dictionary we want to create is
    // already present. If not, create it and add
    // it to the named object dictionary.
    //
    AcDbDictionary *pDict;
    if (pNamedobj->getAt("ASDK_DICT", (AcDbObject*&) pDict,
        AcDb::kForWrite) == Acad::eKeyNotFound)
    {
        pDict = new AcDbDictionary;
        AcDbObjectId DictId;
        pNamedobj->setAt("ASDK_DICT", pDict, DictId);
    }
    pNamedobj->close();
    if (pDict) {
        // Create new objects to add to the new dictionary,
        // add them, then close them.
        //
        AsdkMyClass *pObj1 = new AsdkMyClass(1);
        AsdkMyClass *pObj2 = new AsdkMyClass(2);
        AcDbObjectId rId1, rId2;
        pDict->setAt("OBJ1", pObj1, rId1);
        pDict->setAt("OBJ2", pObj2, rId2);
        pObj1->close();
        pObj2->close();
        pDict->close();
    }
}