//获取文件名
int getFile( // input: const char* pCmdAsk, // prompt for command line mode const char* pDiaAsk, // prompt for dialog box mode const char* pExt, // file extension // output: char* pResult) // selected file returned to the caller. // must be an allocated buffer! { char tmpResult[134]; struct resbuf *pRb = NULL; int res = RTERROR; char drive[_MAX_DRIVE], dir[_MAX_DIR]; char fname[_MAX_FNAME], ext[_MAX_EXT];
// command line argument? // if ( NULL != (pRb = acedGetArgs()) && RTSTR == pRb->restype) { // yes! // strcpy( tmpResult, pRb->resval.rstring ); // continue later: look if acedFindFile finds the file! // res = RTNORM; } else { // no command line argument // struct resbuf fileDia;
// is "filedia" set to 1? // acedGetVar( "filedia", &fileDia ); if (1 == fileDia.resval.rint) { // yes, display dialog box // struct resbuf fileRes;
res = acedGetFileD( pDiaAsk, NULL, pExt, 0, &fileRes ); if (RTNORM != res) return res; if (RTSTR == fileRes.restype) { // user selected valid file // strcpy( pResult, fileRes.resval.rstring ); free( fileRes.resval.rstring ); return RTNORM; } } // Prompt at command line required. Either // filedia = 0, or "type it" button in dialog was pressed. // res = acedGetString( 0, pCmdAsk, tmpResult ); if (RTNORM != res) return res; } // look if there's already the file extension attached // _splitpath( tmpResult, drive, dir, fname, ext ); // if not, append file extension // if (stricmp( ext, pExt ) != 0) _makepath( tmpResult, drive, dir, fname, pExt );
// look if file exists (only if not in dialog mode) // res = acedFindFile( tmpResult, pResult ); if (RTNORM != res) acutPrintf( "/nUnable to open %s./n", tmpResult ); return res; }
例子： char dwgName[_MAX_PATH];
if (RTNORM != getFile( "Enter DWG name", "Select Drawing", "dwg", dwgName )) { return; }
——————————————————————————————————————————————
// 从dwg文件中拷贝所有图块定义至当前文档中, // 符号库: 可以用一个dwg文件存储多个符号块定义. void CopyBlockTableRecordFromDwgFile(LPCTSTR dwgFile) { Acad::ErrorStatus es; AcDbDatabase *db = acdbHostApplicationServices()->workingDatabase(); ASSERT(dwgFile.CompareNoCase("") != 0); if (FileExists(dwgFile) == TRUE) { AcDbDatabase *pDb = new AcDbDatabase(Adesk::kFalse); es = pDb->readDwgFile(dwgFile); if (es != Acad::eOk) { acutPrintf("Failed to reading dwg.Error:%d/n",es); return ; } AcDbBlockTable* pBT; es = pDb->getSymbolTable(pBT,AcDb::kForRead); if (es != Acad::eOk) { acutPrintf("Error getting BlockTable of dwg.Error:%d/n",es); return ; } AcDbObjectId objId; AcDbObjectIdArray objIdArray; AcDbBlockTableIterator *pIT; es = pBT->newIterator(pIT); if (es != Acad::eOk) { acutPrintf("Error iterating block table.Error:%d/n",es); return ; } for (; !pIT->done(); pIT->step()) { es = pIT->getRecordId(objId); if (es == Acad::eOk) { objIdArray.append(objId); } } delete pIT; pBT->close(); // AcDbObjectId destBlkId; destBlkId = db->currentSpaceId(); AcDbIdMapping idMap; idMap.setDestDb(db); es = db->wblockCloneObjects(objIdArray,destBlkId,idMap,AcDb::kDrcIgnore); if (es != Acad::eOk) { acutPrintf("Failed wblockCloneObjects.Error:%d/n",es); return ; } delete pDb; } } —————————————————————————————————————————————— DXF读取函数 LPCTSTR bytesToHexStr(char* buffer, int len, CString& hexStr) { unsigned char k; int j; CString tmpStr; hexStr.Empty(); // make sure nothing in it yet since we are concatenating it for (j=0;j<len;j++) { k = static_cast<unsigned char>(buffer[j]); tmpStr.Format(_T("hX"), k); hexStr += tmpStr; } return hexStr; } int dxfCodeToDataType(int resType) { // which data type is this value if ((resType >= 0) && (resType <= 9)) return RTSTR; else if ((resType >= 10) && (resType <= 17)) return RT3DPOINT; else if ((resType >= 38) && (resType <= 59)) return RTREAL; else if ((resType >= 60) && (resType <= 79)) return RTSHORT; else if ((resType >= 90) && (resType <= 99)) return RTLONG; else if ((resType == 100) || (resType == 101) || (resType == 102) ||(resType == 105)) return RTSTR; else if ((resType >= 110) && (resType <= 112)) return RTSTR; else if ((resType >= 140) && (resType <= 149)) return RTREAL; else if ((resType >= 170) && (resType <= 179)) return RTSHORT; else if ((resType >= 210) && (resType <= 219)) return RT3DPOINT; else if ((resType >= 270) && (resType <= 299)) return RTSHORT; else if ((resType >= 300) && (resType <= 309)) return RTSTR; else if ((resType >= 310) && (resType <= 369)) return RTENAME; else if ((resType >= 370) && (resType <= 379)) return RTSHORT; else if ((resType >= 380) && (resType <= 389)) return RTSHORT; else if ((resType >= 390) && (resType <= 399)) return RTENAME; else if ((resType >= 400) && (resType <= 409)) return RTSHORT; else if ((resType >= 410) && (resType <= 419)) return RTSTR; else if (resType == 1004) return resType; // binary chunk else if ((resType >= 999) && (resType <= 1009)) return RTSTR; else if ((resType >= 1010) && (resType <= 1013)) return RT3DPOINT; else if ((resType >= 1038) && (resType <= 1059)) return RTREAL; else if ((resType >= 1060) && (resType <= 1070)) return RTSHORT; else if ((resType == 1071)) return RTLONG; else if ((resType < 0) || (resType > 4999)) return resType; else return RTNONE; } void dxfToStr(const resbuf* rb, CString& dxfCodeStr, CString& valueStr) { int dataType = dxfCodeToDataType(rb->restype); dxfCodeStr.Format(_T("%d"), rb->restype); CString tmpStr; switch (dataType) { case RTSHORT: valueStr.Format(_T("%d"), rb->resval.rint); break; case RTLONG: valueStr.Format(_T("%ld"), rb->resval.rlong); break; case RTREAL: valueStr.Format(_T("%g"), rb->resval.rreal); break; case RTSTR: if (rb->resval.rstring == NULL) valueStr = _T("(NULL)"); else valueStr.Format(_T("/"%s/""), rb->resval.rstring); break; case RT3DPOINT: valueStr.Format(_T("(%g, %g, %g)"), rb->resval.rpoint[X], rb->resval.rpoint[Y], rb->resval.rpoint[Z]); break; case RTPOINT: valueStr.Format(_T("(%g, %g)"), rb->resval.rpoint[X], rb->resval.rpoint[Y]); break; case 1004: valueStr.Format(_T("Binary Chunk: /"%s/""), bytesToHexStr(rb->resval.rbinary.buf, rb->resval.rbinary.clen, tmpStr)); break; case -6: valueStr = _T("Extension Dictionary"); break; case -5: valueStr = _T("Persistent Reactors"); break; case -4: valueStr.Format(_T("Conditional Operator: /"%s/""), rb->resval.rstring); break; case -3: valueStr = _T("Start of Xdata"); break; case -2: valueStr.Format(_T("<Entity Name Reference: %8lx>"), rb->resval.rlname[0]); break; case -1: case RTENAME: if ((rb->restype >= 330 )&& (rb->restype < 340)) valueStr.Format(_T("<Soft Pointer: %8lx>"), rb->resval.rlname[0]); else if((rb->restype >= 340) && (rb->restype < 350)) valueStr.Format(_T("<Hard Pointer: %8lx>"), rb->resval.rlname[0]); else if((rb->restype >= 350) && (rb->restype < 360)) valueStr.Format(_T("<Soft Ownership: %8lx>"), rb->resval.rlname[0]); else if((rb->restype >= 360) && (rb->restype < 370)) valueStr.Format(_T("<Hard Ownership: %8lx>"), rb->resval.rlname[0]); else if((rb->restype >= 390) && (rb->restype < 399)) valueStr.Format(_T("<Hard Pointer: %8lx>"), rb->resval.rlname[0]); else valueStr.Format(_T("<Entity Name: %8lx>"), rb->resval.rlname[0]); break; case RTPICKS: valueStr.Format(_T("<Selection Set: %8lx>"), rb->resval.rlname[0]); break; case RTLB: valueStr = _T("List Begin"); break; case RTLE: valueStr = _T("List End"); break; case RTNIL: valueStr = _T("NIL"); break; case RTT: valueStr = _T("T"); break; default: valueStr = _T("*Unknown*"); break; } } —————————————————————————————————————————————— 设置获取系统变量 acedsetvar/acedgetvar —————————————————————————————————————————————— acad的窗口缩放效果，类似VBA的ZoomWindow void asdkzoomExt() { // get the extents of the drawing AcDbViewTableRecord view; AcGePoint3d max =acdbHostApplicationServices()->workingDatabase()->extmax(), min = acdbHostApplicationServices()->workingDatabase()->extmin(); AcGePoint2d max_2d (max[X], max[Y]); AcGePoint2d min_2d (min[X], min[Y]); // now set the view centre point view.setCenterPoint (min_2d + (max_2d - min_2d) / 2.0); // now height and width of view view.setHeight(max_2d[Y] - min_2d[Y]); view.setWidth (max_2d[X] - min_2d[X]); // set the view acedSetCurrentView (&view, NULL); // updates the extents acdbHostApplicationServices()->workingDatabase()->updateExt(TRUE); } // // This is command 'ZOOMWIN, by Fenton Webb [Apr/17/2002], DevTech, Autodesk void asdkzoomWin() { AcGePoint3d max, min; // get the window coords int res = acedGetPoint (NULL, "/nPick zoom window pnt : ",asDblArray(min)); // if ok if (res == RTNORM) { res = acedGetCorner (asDblArray(min), "/nPick other corner : ", asDblArray(max)); // get the extents of the drawing AcDbViewTableRecord view; AcGePoint2d max_2d (max[X], max[Y]); AcGePoint2d min_2d (min[X], min[Y]); // now set the view centre point view.setCenterPoint (min_2d + (max_2d - min_2d) / 2.0); // now height and width of view view.setHeight(max_2d[Y] - min_2d[Y]); view.setWidth (max_2d[X] - min_2d[X]); // set the view acedSetCurrentView (&view, NULL); // updates the extents acdbHostApplicationServices()->workingDatabase()->updateExt(TRUE); } } —————————————————————————————————————————————— 调用acad标准对话框 线型选择 AcDbObjectId new_linetypeId; char * new_linetypename = NULL; if (acedLinetypeDialog(acdbCurDwg()->celtype(),true,new_linetypename,new_linetypeId) && new_linetypename) { acutPrintf("/nLinetype selected: %s",new_linetypename); free(new_linetypename); } else { acutPrintf("/nLinetype not selected!"); } 线宽选择 AcDb::LineWeight w; acedLineWeightDialog(AcDb::LineWeight::kLnWt000,false,w); 颜色选择 acedSetColorDialog(i,TRUE,256); —————————————————————————————————————————————— 函数名: setView 功能: 设置视图（相当于Zoom Window命令） 输入参数: Pt1 -- 视图左上角点 Pt2 -- 视图右下角点 ex_ratio -- 扩展比率,一般为1.0 输出参数: 返回值: void 其它: *****************************************************************/ void setView(AcGePoint2d Pt1, AcGePoint2d Pt2, double ex_ratio) { AcGePoint2d CenterPt;
//若X坐标或Y坐标重合，判为意外，不进行SetView操作 if ((fabs(Pt1.x-Pt2.x)<1e-6)||(fabs(Pt1.y-Pt2.y)<1e-6)) return;
//确保两个坐标点分别为左上角和右下角 if (Pt1.x>Pt2.x) { double tmp; tmp = Pt1.x; Pt1.x = Pt2.x; Pt2.x = tmp; } if (Pt2.y>Pt1.y) { double tmp; tmp = Pt1.y; Pt1.y = Pt2.y; Pt2.y = tmp; }
//获取当前DwgView的尺寸 CRect CADrect; acedGetAcadDwgView()->GetClientRect(&CADrect);
double width,height,ratio;
ratio = (double)(CADrect.right-CADrect.left)/(double)(CADrect.bottom-CADrect.top);
if (fabs(ratio)<1e-6) return;
if ((Pt2.x-Pt1.x)/(Pt1.y-Pt2.y) > ratio) { width = Pt2.x-Pt1.x; height = width/ratio; }else{ height = Pt1.y-Pt2.y; width = height * ratio; }
//设置当前视图中心点 CenterPt.x = (Pt1.x+Pt2.x)/2; CenterPt.y = (Pt1.y+Pt2.y)/2;
//改变当前视图 AcDbViewTableRecord pVwRec; pVwRec.setCenterPoint(CenterPt); pVwRec.setWidth(width * ex_ratio); pVwRec.setHeight(height * ex_ratio); acedSetCurrentView( &pVwRec, NULL ); }
/// // 函 数 名 : oxaGetVar // 函数功能 : // 处理过程 : // 备 注 : // 作 者 : user // 时 间 : 2004年6月16日 // 返 回 值 : int // 参数说明 : const CString strSym, // AcGePoint3d &vOut /// int oxaGetVar(const CString strSym, AcGePoint3d &vOut ) { resbuf rbVar ; int iRt=acedGetVar(strSym, &rbVar) ; if (iRt!=RTNORM) { return iRt; } //oxaPrint(&rbVar); if (rbVar.restype==RTPOINT) { vOut.x=rbVar.resval.rpoint[0]; vOut.y=rbVar.resval.rpoint[1]; } if (rbVar.restype==RT3DPOINT) { vOut.x=rbVar.resval.rpoint[0]; vOut.y=rbVar.resval.rpoint[1]; vOut.z=rbVar.resval.rpoint[2]; } return RTNORM; }
/ //# DOC.BEGIN //# 函数名称： oxaGetVar //# 函数编号： OXA //# 函数声明： //# 函数参数： const CString strSym, // int &vOut //# 返回值： int //# 函数分类： //# 函数功能： 获取系统变量， 封装acedGetVar() //# 注意事项： //# 涉及的全局变量： //# 调用的OXARX函数： //# 函数算法： //# ACAD版本：R14 R15 R16 //# 配合函数： //# 类似函数： //# 替换函数： //# 现存缺陷： //# 示例程序： //# 测试要求： //# 历史记录： 2003年11月10日 , zjw ,完成 // //# DOC.END //
int oxaGetVar(const CString strSym, int &vOut ) { resbuf rbVar; int iRt=acedGetVar(strSym, &rbVar) ; if (iRt!=RTNORM) { return iRt; } if (rbVar.restype==RTLONG) { vOut=rbVar.resval.rlong; } if (rbVar.restype==RTSHORT) { vOut=rbVar.resval.rint; }
return RTNORM; }
/ //# DOC.BEGIN //# 函数名称： oxaGetVar //# 函数编号： OXA //# 函数声明： //# 函数参数： const CString strSym, // double &vOut //# 返回值： int //# 函数分类： //# 函数功能： 获取系统变量， 封装acedGetVar() //# 注意事项： //# 涉及的全局变量： //# 调用的OXARX函数： //# 函数算法： //# ACAD版本：R14 R15 R16 //# 配合函数： //# 类似函数： //# 替换函数： //# 现存缺陷： //# 示例程序： //# 测试要求： //# 历史记录： 2003年11月24日 , zjw ,完成 // //# DOC.END int oxaGetVar(const CString strSym, double &vOut ) { resbuf rbVar; int iRt=acedGetVar(strSym, &rbVar) ; if (iRt!=RTNORM) { return iRt; } if (rbVar.restype==RTREAL) { vOut=rbVar.resval.rreal; } return RTNORM; }
/ //# DOC.BEGIN //# 函数名称： oxaGetVar //# 函数编号： OXA //# 函数声明： //# 函数参数： const CString strSym, // CString &vOut //# 返回值： int //# 函数分类： //# 函数功能：获取系统变量， 封装acedGetVar() //# 注意事项： //# 涉及的全局变量： //# 调用的OXARX函数： //# 函数算法： //# ACAD版本：R14 R15 R16 //# 配合函数： //# 类似函数： //# 替换函数： //# 现存缺陷： //# 示例程序： //# 测试要求： //# 历史记录： 2003年11月24日 , zjw ,完成 // //# DOC.END int oxaGetVar(const CString strSym, CString &vOut ) { resbuf rbVar; int iRt=acedGetVar(strSym, &rbVar) ; if (iRt!=RTNORM) { return iRt; } if (rbVar.restype==RTSTR) { vOut=rbVar.resval.rstring; } return RTNORM; } // 函数名 : SetCurTextStyle // 描述 : 设置当前TextStyle // 返回 : Acad::ErrorStatus // 参数 : const char* lpStyleName // 参数 : AcDbDatabase* pDb/* = NULL */ Acad::ErrorStatus SetCurTextStyle(const char* lpStyleName, AcDbDatabase* pDb/* = NULL */) { AcDbDatabase* pCurDb = pDb; if (pCurDb == NULL) pCurDb = acdbHostApplicationServices()->workingDatabase();
AcDbTextStyleTableRecordPointer spRecord(lpStyleName, pCurDb, AcDb::kForRead); Acad::ErrorStatus es = spRecord.openStatus(); if (es == Acad::eOk) { es = pCurDb->setTextstyle(spRecord->objectId()); } return es; } // Function name : SetCurLayer // Descrīption : 设置当前层 // Return type : Acad::ErrorStatus // Argument : const char* lpLayerName // Argument : AcDbDatabase* pDb/* = NULL */ Acad::ErrorStatus SetCurLayer(const char* lpLayerName, AcDbDatabase* pDb/* = NULL */) { AcDbDatabase* pCurDb = pDb; if (pCurDb == NULL) pCurDb = acdbHostApplicationServices()->workingDatabase();
AcDbLayerTableRecordPointer spRecord(lpLayerName, pCurDb, AcDb::kForRead); Acad::ErrorStatus es = spRecord.openStatus(); if (es == Acad::eOk) { es = pCurDb->setClayer(spRecord->objectId()); } return es; } //获取属性块中所有属性的字符串值，并且存于链表中
CODE:
void FEGroups::iterateDictionary() { //obtain the GROUP dictionary by looking up "ACAD_GROUP" in the named object dictionary // /* AcDbDictionary *pNamedobj; acdbHostApplicationServices()->workingDatabase() ->getNamedObjectsDictionary(pNamedobj, AcDb::kForRead);
// Get a pointer to the ASDK_DICT dictionary. // AcDbDictionary *pDict; pNamedobj->getAt("ACAD_GROUP", (AcDbObject*&)pDict, AcDb::kForRead); pNamedobj->close(); */ // Get a pointer to the ACAD_GROUP dictionary AcDbDictionary *pDict; acdbHostApplicationServices()->workingDatabase() ->getGroupDictionary(pDict, AcDb::kForRead);
// Get an iterator for the ASDK_DICT dictionary. // AcDbDictionaryIterator* pDictIter = pDict->newIterator(); AcDbGroup *pGroup; char* name; for (; !pDictIter->done(); pDictIter->next()) { // Get the current record, open it for read, and // print its name. // pDictIter->getObject((AcDbObject*&)pGroup, AcDb::kForRead); pGroup->getName(name); pGroup->close(); acutPrintf("\nintval is: %s", name); } delete pDictIter; pDict->close();
}
//检测AutoCAD是否已经运行
CODE:
void Autocadtest() { // TODO: Add your control notification handler code here IAcadApplication m_autocad; IAcadDocuments m_acaddocs; IAcadDocument m_acaddoc; IAcadModelSpace m_acadmodel;
LPDISPATCH pDisp; LPUNKNOWN pUnk; CLSID clsid; BeginWaitCursor(); ::CLSIDFromProgID(L"AutoCAD.Application",&clsid); if(::GetActiveObject(clsid,NULL,&pUnk)==S_OK) { VERIFY(pUnk->QueryInterface(IID_IDispatch,(void**) &pDisp)==S_OK); m_autocad.AttachDispatch(pDisp); pUnk->Release(); } else { if(!m_autocad.CreateDispatch("AutoCAD.Application")) { AfxMessageBox("Autocad program not found\n"); exit(1); } } m_autocad.SetVisible(true); m_acaddocs.AttachDispatch(m_autocad.GetDocuments(),true); m_acaddoc.AttachDispatch(m_acaddocs.Add(vtMissing),true); m_acadmodel.AttachDispatch(m_acaddoc.GetModelSpace(),true); m_acadmodel.AddCircle(pVal,100); m_acadmodel.ReleaseDispatch(); m_acaddoc.ReleaseDispatch(); m_acaddocs.ReleaseDispatch(); m_autocad.ReleaseDispatch(); }
//计算多边形的形心坐标 BOOL GetPolyCentroid(AcDbPolyline * pPline, ads_point CenPt) { unsigned int i, iCount = 0; AcDbVoidPtrArray curveSegments, regions; AcGePoint3d LinePt0, LinePt1; AcGePoint3d origin; AcGeVector3d xAxis, yAxis; double perimeter, area, prodInertia; double momInertia[2], prinMoments[2], radiiGyration[2]; AcGePoint2d centroid; AcGeVector2d prinAxes[2]; AcGePoint2d extentsLow, extentsHigh;
if (pPline->isClosed() != Adesk::kTrue) { ads_printf("\n折线不封闭, 无法形成正确的区域。"); return FALSE; } curveSegments.append((AcDbCurve *) pPline);
if (AcDbRegion::createFromCurves(curveSegments, regions) != Acad::eOk){ ads_printf("\n创建临时区域对象失败!"); //清除Region, 应第9 贴的指点，即使createFromCurves错误，也应清除之； iCount = regions.length(); for(i = 0; i < iCount; i++) delete (AcDbRegion *)regions.at(i);
return FALSE; } AcDbRegion * pRegion; if ((iCount = regions.length()) == 0){ ads_printf("\n创建临时区域对象为空!"); return FALSE; } if (iCount > 1){ // 多个 AcDbRegion , 无法确定应该返回哪一个，干脆返回NULL; ads_printf("\n多个区域实体。"); for(i = 0; i < iCount; i++) delete (AcDbRegion *)regions.at(i); return FALSE; } pRegion = (AcDbRegion *) regions.at(0);
origin.set(0,0,0); //设置原点坐标 xAxis.set(1,0,0); //设置X Y轴， yAxis.set(0,1,0);
if (pRegion->getAreaProp( origin, xAxis, yAxis, perimeter, area, centroid, momInertia, prodInertia, prinMoments, prinAxes, radiiGyration, extentsLow, extentsHigh) != Acad::eOk ){ ads_printf("\n区域面积: %.3f, 周长:%.3f", area, perimeter); ads_printf("\n获取区域对象属性失败!"); delete pRegion; return FALSE; } XYZ_POINT(CenPt, centroid.x, centroid.y, 0); //得到形心坐标 ads_printf("\n区域面积: %.3f, 周长:%.3f", area, perimeter); pRegion->close(); delete pRegion;
return TRUE; }
AcDbObjectId CreateHatch( AcDbObjectId dbOId, char cLayer[], char cPattern[] = "SOLID", int nColor = 256, double dAngle = 0.0, double dScale = 1.0, AcDbDatabase * pDbDatab = acdbHostApplicationServices()->workingDatabase()) { AcCmColor CmC; AcDbObjectId DbOId; AcDbObjectIdArray DbOIdA(0, 2); AcDbBlockTable * pDbBT; AcDbBlockTableRecord * pDbBTR; AcGeVector3d normal(0.0, 0.0, 1.0); DbOIdA.append(dbOId); AcDbHatch* pDbHat = new AcDbHatch(); pDbHat->setDatabaseDefaults(); pDbHat->setAssociative(Adesk::kTrue); // BUG: doesn't do squat! have to set the reactor yourself to get associativity! pDbHat->appendLoop(AcDbHatch::kExternal, DbOIdA); pDbHat->setPatternScale(dScale); pDbHat->setPatternAngle(dAngle); pDbHat->setPattern(AcDbHatch::kPreDefined, cPattern); pDbHat->setNormal(normal); pDbHat->evaluateHatch(); // crucial call or nothing gets displayed! pDbDatab->getSymbolTable(pDbBT, AcDb::kForRead); pDbBT->getAt(ACDB_MODEL_SPACE, pDbBTR, AcDb::kForWrite); pDbBTR->appendAcDbEntity(DbOId, pDbHat); pDbHat->setLayer(cLayer); CmC.setColorIndex(nColor); ((AcDbEntity *)pDbHat)->setColor(CmC); pDbBT->close(); pDbBTR->close(); pDbHat->close(); return DbOId; }
objectARX 常用功能实现集合
一 在ARX中禁用AutoCAD的某个命令 以LINE命令为例，在程序中加入下面的一句即可禁用LINE命令：
acedCommand(RTSTR, "undefine", RTSTR, "line",RTNONE);
下面的语句则可恢复LINE命令的定义：
acedCommand(RTSTR, "redefine", RTSTR, "line",RTNONE);
二 在对话框中预览DWG文件 使用acdbDisplayPreviewFromDwg函数，具体的方法为： char fileName[100]; strcpy(fileName, "C:\\test.dwg"); bool es; HWND pWnd; CFrameWnd *pFrame = (CFrameWnd*)GetDlgItem(IDC_PICTURE);
es = acdbDisplayPreviewFromDwg(fileName, pFrame->m_hWnd); 上面的代码将在一个Picture控件中显示指定的图形。 另外，需要包含“dbmain.h”头文件。
三 通过ARX更改AutoCAD窗口的标题名称 CMDIFrameWnd *pp; pp=acedGetAcadFrame(); pp->SetWindowText ("yourName"); pp->UpdateWindow ();
四 获得当前数据库 在ARX编程中，经常需要使用当前数据库，例如需要获得当前图形中设置的文字样式、标注样式等。 要获得当前数据库，都可以直接使用下面的方法： AcDbTextStyleTable *pTextStyleTAble; AcDbObjectId textstyleId; textstyleId=acdbHostApplicationServices()->workingDatabase()->textstyle(); 如果用acadCurDwg来代替acdbHostApplicationServices()->workingDatabase()，也能得到同样的结果。
