On Feb 23, 8:08 am, penelop <[email protected]> wrote:
> Hi,
> I've created a map that allow user to click on the map and draw a
> polyline or polygon.
> I placed a button to help user undo the last click and draw the
> polygon again, but removeOverlay doesn't work properly, the old
> polygon still remains on the map.
> function PolygonManager(gmap,options) {
> var map = gmap;
> var gPolygon = null; //store reference to the GPolygon
> if (gPolygon) {
> map.removeOverlay(gPolygon);
> }
gPolygon is a LOCAL reference to the polygon, so it only exists while
the PolygonManager function is being executed. At the end of each run
of the function, the reference is destroyed. If you need to pass
references between function executions, the reference needs to be in a
global variable.
Andrew
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