Called from
C1MapVirtualLayer when new items are needed for a map region.
Syntax
'Declaration
Sub Request( _
ByVal As System.Double, _
ByVal As System.Double, _
ByVal As System.Windows.Point, _
ByVal As System.Windows.Point, _
ByVal As System.Action(Of ICollection) _
)
void Request(
System.double ,
System.double ,
System.Windows.Point ,
System.Windows.Point ,
System.Action<ICollection>
)
Parameters
- minZoom
- The minimum zoom of the region.
- maxZoom
- The maximum zoom of the region.
- lowerLeft
- The lower left coordinate of the region, in geographic coordinates.
- upperRight
- The upper right coordinate of the region, in geographic coordinates.
- callback
- A delegate to call with the elements inside the specified region.
See Also