给ACAD增加个命令，修改外部DWG文件，给所有LINE加扩展数据的完整的ARX代码...

#include #include // acadErrorStatusText #include #include // AcDbCircle #include #include // asDblArray /* * Register an application for xData * * In : * AcDbDatabase* pDb : Database * const char* pAppName : application name * Adesk::Boolean exclude : * If exclude == Adesk::kTrue, then xData associated with * this AcDbRegAppTableRecord will not be saved when the * drawing is saved as a release 12 (R12) drawing. * If exclude == Adesk::kFalse, the data will be saved * during a saveAsR12 operation. */ Acad::ErrorStatus registerApp(AcDbDatabase* pDb, const char * pAppName,Adesk::Boolean exclude = Adesk::kFalse) { AcDbRegAppTable* pAppTable; Acad::ErrorStatus es; // get the RegAppTable if((es = pDb->getRegAppTable(pAppTable,AcDb::kForWrite)) != Acad::eOk) return es; // if RegAppTable has application already - fine if(pAppTable->has(pAppName)) { pAppTable->close(); return Acad::eOk; } AcDbRegAppTableRecord* pAppTableRecord = new AcDbRegAppTableRecord(); pAppTableRecord->setExcludeFromSaveAsR12(exclude); pAppTableRecord->setName(pAppName); if((es = pAppTable->add(pAppTableRecord)) != Acad::eOk) { delete pAppTableRecord; pAppTable->close(); return es; } pAppTableRecord->close(); pAppTable->close(); return es; } /* * Add to all lines in model space a point as xData */ Acad::ErrorStatus addXDataToAllLines(AcDbDatabase* pDb,const char *pAppName) { AcDbBlockTable *pBlockTable; AcDbBlockTableRecord *pModelSpace; Acad::ErrorStatus es; if((es = pDb->getBlockTable(pBlockTable,AcDb::kForRead)) != Acad::eOk) return es; if((es = pBlockTable->getAt(ACDB_MODEL_SPACE,pModelSpace,AcDb::kForRead)) != Acad::eOk) { pBlockTable->close(); return es; } pBlockTable->close(); AcDbBlockTableRecordIterator *pIter; if((es = pModelSpace->newIterator(pIter)) != Acad::eOk) { pModelSpace->close(); return es; } AcDbEntity* pEnt; AcDbLine* pLine; for(;!pIter->done();pIter->step()) { if(pIter->getEntity(pEnt,AcDb::kForRead) != Acad::eOk) continue; pLine = AcDbLine::cast(pEnt); if(pLine) { struct resbuf* xdata; AcGePoint3d pntToAttach = pLine->startPoint(); xdata = ads_buildlist(1001,pAppName,1011,asDblArray(pntToAttach),0); pLine->upgradeOpen(); if((es = pLine->setXData(xdata)) != Acad::eOk) { ads_printf("\nsetXData failed : es = %s",acadErrorStatusText(es)); } ads_relrb(xdata); } pEnt->close(); } delete pIter; return Acad::eOk; } void addXDataToExternalDb() { Acad::ErrorStatus es; char* filename = "c:\\temp\\test.dwg"; char* appName = "AcDcApp"; AcDbDatabase *pDb = new AcDbDatabase(Adesk::kFalse); if((es = pDb->readDwgFile(filename)) != Acad::eOk) { ads_printf("\nreadDwgFile failed for %s : es = %s",filename,acadErrorStatusText(es)); return; } if((es = registerApp(pDb,appName)) != Acad::eOk) ads_printf("\nregisterApp failed : es = %s",acadErrorStatusText(es)); addXDataToAllLines(pDb,appName); pDb->saveAs("c:\\temp\\test2.dwg"); delete pDb; } void initApp() { acedRegCmds->addCommand("TEST", "addx", "addx", ACRX_CMD_MODAL, &addXDataToExternalDb); } void unloadApp() { acedRegCmds->removeGroup( "TEST" ); } extern "C" AcRx::AppRetCode acrxEntryPoint( AcRx::AppMsgCode msg, void* p ) { switch (msg) { case AcRx::kInitAppMsg: acrxUnlockApplication( p ); initApp(); break; case AcRx::kUnloadAppMsg: unloadApp(); break; default: break; } return AcRx::kRetOK; }

强，虽然看着头晕！