OnClick: Which marker is selected?

[FrancescoPierobon]

With JQUeryDemo_V2, TIWCGJQGMap3 example, function MultiMarkers: is there a way to know on which marker the user has put the mouse if the event MultiMarkerMouseOverEvent is fired?

Thank you very much for your help.

[Alexander Bulei]

Hi FrancescoPierobon,

With JQUeryDemo_V2, TIWCGJQGMap3 example, function MultiMarkers: is there a way to know on which marker the user has put the mouse if the event MultiMarkerMouseOverEvent is fired?

Yes, you can,

1. You need set "ID" for marker.
   
   Example:
   
   delphi code

   LMarker:= Marker.Values.Add;
   LMarker.Id:= 'mymarkerID_2'; // unique ID
   LMarker.Data:= 'Mealhada';
   LMarker.LatLng.Latitude:= 40.36267630;
   LMarker.LatLng.Longitude:= -8.453534200000002;

   
   
2. Add new BrowserParam to event:
   
   Example:
   
   delphi code

   procedure TIWForm1.IWAppFormCreate(Sender: TObject);
   var
     LMarker: TIWCGJQGMap3MultipleMarker;
   begin
     with IWCGJQGMap3.JQGMapV3Options do
     begin
       Map.Options.Zoom:= 6;
       Map.Options.Center.Latitude:= 40.36267630;
       Map.Options.Center.Longitude:= -8.453534200000002;
       Map.Options.Draggable:= False;
       {MEALHADA}
       LMarker:= Marker.Values.Add;
       LMarker.Id:= 'mymarkerID_2';
       LMarker.Data:= 'Mealhada';
       LMarker.LatLng.Latitude:= 40.36267630;
       LMarker.LatLng.Longitude:= -8.453534200000002;
       with LMarker.Events.OnMouseOver.BrowserParams.Add do
       begin
         ServerName:= 'markerid';
         BrowserScript:= 'context.id';
       end;
     end;
   end;

   
   
3. To get the marker id, do this in MouseOver event:
   
   delphi code

   procedure TIWForm1.IWCGJQGMap3JQGMapV3OptionsMarkerEventsMouseOver(Sender: TObject; AParams: TStringList);
   var
     MyMarkerId: string;
   begin
     MyMarkerId:= AParams.Values['markerid'];
     { your code here }
   end;

   
   
   

Best Rgeards.

[FrancescoPierobon]

Hi CGDevTools,

Thank you very much for your great support that will distinguish from others and for which it is really worth to invest on your components.

Francesco Pierobon
http://www.webcolf.com

[FredT]

Hi,

I would like do the same thing with the event "OnDragEnd" but it doesn't work, the event is not fired !

LMarker:= IWCGJQGMap3.JQGMapV3Options.Marker.Values.Add;
LMarker.Data:= 'Marker 0';
LMarker.Id := '0';
LMarker.LatLng.Latitude:= 0;
LMarker.LatLng.Longitude:= 0;
LMarker.Options.Draggable := True;

with IWCGJQGMap3.JQGMapV3Options.Marker.Events.OnDragEnd.BrowserParams.Add do
begin
ServerName := 'markerid';
BrowserScript := 'context.id';
end;

Thank

[Alexander Bulei]

Hi FredT,

Check our main demo, it have example of dragend event.

Best Regards.

[FredT]

Hi,

Yes, that's what I did! But in the example there are no additional parameters.
But it is when I add one (to find the marker's id) that the event is no longer called!

Thank.

[Alexander Bulei]

Hi,

Because you have javascript error.

with IWCGJQGMap3.JQGMapV3Options.Marker.Events.OnDragEnd.BrowserParams.Add do
begin
ServerName := 'markerid';
BrowserScript := 'context.id';
end;

The function doesnt have any "context" parameter, only "marker".

Best Regards.

[FredT]

Hi,

I admit that I did not understand much about the operation of additional parameters for events. I did not find any documentation on this subject either, so:

1- How do we know that OnMouseOver has a Context parameter and not OnDragEnd?

2 - By extension, how to know the parameters usable for each event?

3 - And especially what BrowserScript should I use in OnDragEnd?
Because if I do not put BrowserScript in OnDragEnd, I get an empty string in markerid.
Same if I enter BrowserScript: = 'marker.id';
And if I put something else, the event is no longer called!

Thank.

[Alexander Bulei]

Hi FredT,

viewtopic.php?f=5&t=3843

Best Regards.

[FredT]

Hi Alexander,

Thank you so much.