Arx编程对实体的基本操作.docVIP

// // ObjectARX defined commands, created by [2010-9-30], , #include StdAfx.h #include StdArx.h #include dbents.h #include geassign.h #include dbpl.h #define PI 3.141592653589793238462643383279502884197169399375105820974944592308 BOOL AddEntityToDBS(AcDbEntity *pEntity, AcDbObjectId Id) { //获取块表 AcDbBlockTable *pBlockTable = NULL; if (acdbHostApplicationServices()-workingDatabase()-getBlockTable(pBlockTable, AcDb::kForRead) != Acad::eOk) { return FALSE; } //获取模型空间的快表记录 AcDbBlockTableRecord *pBlkTabRec = NULL; if (pBlockTable-getAt(ACDB_MODEL_SPACE, pBlkTabRec, AcDb::kForWrite) != Acad::eOk) { pBlockTable-close(); return FALSE; } pBlkTabRec-appendAcDbEntity(Id, pEntity); pEntity-close(); pBlockTable-close(); pBlkTabRec-close(); return TRUE; } //-----------绘制直线----------------------------------------------------- // This is command CLINE, by [2010-9-30], , void EICADDrawCLine() { #ifdef OARXWIZDEBUG acutPrintf (\nOARXWIZDEBUG - EICADDrawCLine() called.); #endif // OARXWIZDEBUG // TODO: Implement the command ads_point pt0; ads_point pt; AcDbObjectId EntId; if (ads_getpoint(NULL, _T(\n请指定起始点：), pt0) !=RTNORM) return; if (ads_getpoint(pt0, _T(\n请指定终点：), pt) != RTNORM) return; AcDbLine *pLine = new AcDbLine(asPnt3d(pt0), asPnt3d(pt)); AddEntityToDBS(pLine, EntId); pLine-close(); } //-----------编辑直线起点----------------------------------------------------- // This is command EDITLSTARTPOINT, by [2010-9-30], , void EICADDRAWEditlstartpoint() { #ifdef OARXWIZDEBUG acutPrintf (\nOARXWIZDEBUG - EICADDRAWEditlstartpoint() called.); #endif // OARXWIZDEBUG // TODO: Implement the command ads_point pt0; ads_point pt; ads_name Ent; AcDbObjectId EntId; AcDbLine *pLine = NULL; if (ads_entsel(_T(\n请选择对象：), Ent, pt0) != RTNORM) return; if (ads_getpoint(NULL, _T(\n请选择起点：), pt) != RTNORM) return; if (acdbGetObjectId(EntId, Ent) != Acad::eOk) return; if (acdbOpenObject(pLine, EntId, AcDb::kForWrite) != Acad::eOk) return;