实现shape图层添加label

void CmapwingisTest2View::OnToolsAdd32780()

{

TCHAR szFilters[]= _T("SHP Files (*.shp)|*.shp||");

CFileDialog fileDlg (TRUE,_T("shp"),_T("*.shp"),

OFN_FILEMUSTEXIST| OFN_HIDEREADONLY, szFilters, this);

if( fileDlg.DoModal ()!=IDOK )   return;

CString m_strFilePath = fileDlg.GetPathName();

if (_T("")!=m_strFilePath)

{

// 先删除所有图层

//m_map.RemoveAllLayers();

// 获取后缀名判断文件是tif图像还是shp文件

CString strExt = m_strFilePath.Right(3);

if (_T("shp")==strExt)

{

mapWindow::IShapefilePtr pshapefilebound;

pshapefilebound.CreateInstance(__uuidof(mapWindow::Shapefile));

pshapefilebound->Open(_bstr_t(m_strFilePath),false );

m_map.AddLayer( pshapefilebound,TRUE) ;

mapWindow::ILabelsPtr labels=pshapefilebound->GetLabels( );//?

labels->PutFontSize(12);

labels->PutFontBold(true);

labels->PutFontOutlineVisible(true);

labels->PutFontOutlineWidth(4);

mapWindow::ILabelCategoryPtr cat;

labels->AddCategory("Red");

long fieldIndex = 1;//默认首个列

CString str;

IFieldPtr Fields;

//pshapefilebound->GetField(0);

_variant_t var;

for (long i = 0; i < pshapefilebound->GetNumShapes() ; i++)

{

IShapePtr shp =  pshapefilebound->GetShape(i);

IPointPtr pt= shp->GetCenter(   );

var = pshapefilebound->GetCellValue(fieldIndex, i);

str = var.bstrVal; //需要判断本列是否为文本，待解决

labels->AddLabel( _bstr_t(str ),pt->Getx(),pt->Gety(),0,laCenter);

}

labels->put_Synchronized(true);