void caoex1view::onaddcad()
cstring strfilter;
strfilter = "auto cad(*.dxf)| *.dxf|auto cad(*.dwg)|*.dwg||";
cfiledialog pdlg(true,null,null,
ofn_allowmultiselect|ofn_explorer|ofn_longnames|ofn_filemustexist|ofn_hidereadonly,
(lpctstr)strfilter,
null);
cstring strtitle =l"select cad file";
pdlg.m_ofn.lpstrtitle = strtitle;
if(idcancel ==pdlg.domodal()) return;
cstring strext,strpath;
strext = pdlg.getfileext();
strpath = pdlg.getpathname();
if(!(strext.isempty()))
int temp;
temp = strpath.reversefind('//');
strpath = strpath.left(temp);
iworkspacefactoryptr ipcadwksfact(clsid_cadworkspacefactory);
iworkspaceptr ipwspace;
hresult hr = ipcadwksfact->openfromfile((_bstr_t)strpath,null,&ipwspace);
if(failed(hr)) return;
ifeatureworkspaceptr ipworkspace(ipwspace);
ifeaturelayerptr ipcadfeaturelayer;
ifeaturedatasetptr ipfeaturedataset;
ifeatureclassptr ipfeatureclass;
cstring strtemp;
int ipathlength;
int i;
ipathlength =strpath.getlength();
position ps;
ps= pdlg.getstartposition();
isetptr ipset(clsid_set);
while (ps != null)
strtemp = pdlg.getnextpathname(ps);
strtemp = strtemp.right(strtemp.getlength() - (ipathlength + 1));
hr = ipworkspace->openfeaturedataset((_bstr_t)strtemp,&ipfeaturedataset);
if(failed(hr)) return;
ifeatureclasscontainerptr ipfeatureclasscontainer(ipfeaturedataset);
long itemp;
ipfeatureclasscontainer->get_classcount(&itemp);
enum esrifeaturetype featuretype;
bstr aliasname;
for(i = 0;ihr = ipfeatureclasscontainer->get_class(i,&ipfeatureclass);
if(failed(hr)) return;
hr = ipfeatureclass->get_featuretype(&featuretype);
if(failed(hr)) return;
if (featuretype == esriftcoverageannotation)
cocreateinstance(clsid_cadannotationlayer,null,clsctx_all,iid_ifeaturelayer,(void**)&ipcadfeaturelayer);
if(ipcadfeaturelayer == null) return;
else
cocreateinstance(clsid_cadfeaturelayer,null,clsctx_all,iid_ifeaturelayer,(void**)&ipcadfeaturelayer);
if(ipcadfeaturelayer == null) return;
ipfeatureclass->get_aliasname(&aliasname);
ipcadfeaturelayer->put_name(aliasname);
ipcadfeaturelayer->putref_featureclass(ipfeatureclass);
m_ipmap = m_ctrlmap.get_map();
hr = m_ipmap->addlayer(ipcadfeaturelayer);
if(failed(hr)) return;
ienvelopeptr ipenv;
iactiveviewptr ipactiveview(m_ipmap);
hr = ipactiveview->get_fullextent(&ipenv);
if(failed(hr)) return;
hr = ipactiveview->put_extent(ipenv);
if(failed(hr)) return;
hr = ipactiveview->refresh();
if(failed(hr)) return;
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