Qt+GDAL库实现制作经纬度坐标转换工具

OGRSpatialReference m_spatialReference;

if(m_Coordinate == CoordinateDialog::CGCS2000)
    {
        qDebug() << "CGCS2000";
        m_spatialReference.importFromEPSG(4490);
    }
    else if(m_Coordinate == CoordinateDialog::WGS84)
    {
        qDebug() << "WGS84";
        m_spatialReference.importFromEPSG(4326);
    }
    else if(m_Coordinate == CoordinateDialog::XIAN80)
    {
        qDebug() << "XIAN80";
        m_spatialReference.importFromEPSG(4610);
    }
    else if(m_Coordinate == CoordinateDialog::BeiJing54)
    {
        qDebug() << "BeiJing54";
        m_spatialReference.importFromEPSG(4214);
    }

    m_spatialReference.SetTM(0.0, nMeridian, 1.0, nAreacode*1000000 + nOffsetE, nOffsetN);
	OGRSpatialReference* pLonLat = m_spatialReference.CloneGeogCS();
	
	// X、Y转经纬度
	OGRCoordinateTransfORMation* pXY2LonLat = OGRCreateCoordinateTransformation(&m_spatialReference, pLonLat);
	// 经纬度转X、Y
	OGRCoordinateTransformation* pXY2LonLat = OGRCreateCoordinateTransformation(&m_spatialReference, pLonLat);
	
    pXY2LonLat->Transform(1, &dLon, &dLat)