private void SelectExtents(MapWinGIS.Extents ext)
{
object[] Shapes = new object[m_Map.NumLayers];
if (m_CurrentLayer == -1 || m_CurrentLayer >= m_Map.NumLayers)
{
for (int lyr = 0; lyr < m_Map.NumLayers; lyr++)
{
object ob = m_Map.get_GetObject(lyr);
if (ob.GetType() != typeof(MapWinGIS.Shapefile))
{
return;
}
MapWinGIS.Shapefile sf = ob as MapWinGIS.Shapefile;
sf.SelectShapes(ext, 0, MapWinGIS.SelectMode.INTERSECTION, ref Shapes[m_CurrentLayer]);
}
}
else
{
object ob = m_Map.get_GetObject(m_CurrentLayer);
if (ob.GetType() != typeof(MapWinGIS.Shapefile))
{
return;
}
MapWinGIS.Shapefile sf = ob as MapWinGIS.Shapefile;
sf.SelectShapes(ext, 0, MapWinGIS.SelectMode.INTERSECTION, ref Shapes[m_CurrentLayer]);
}
m_Map.SuspendLayout();
// If shift is down then we append to the selection
if (m_ShiftPressed == false)
{
// Clear the selection first
ClearSelectedShapes();
}
//Append selected shapes
for (int lyr = 0; lyr < m_Map.NumLayers; lyr++)
{
int[] myShapes = Shapes[lyr] as int[];
for (int shp = 0; shp <= myShapes.GetUpperBound(0); shp++)
{
if (m_SelectedShapes[lyr].Contains(myShapes[shp]))
{
continue;
}
m_SelectedShapes[lyr].Add(myShapes[shp]);
}
}
for (int lyr = 0; lyr < m_SelectedShapes.GetUpperBound(0); lyr++)
{
Highlight_Layer(lyr);
}
m_Map.ResumeLayout();
}