CGDevTools Forum

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.

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.

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

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

Hi FredT,

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

Best Regards.

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.

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.

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.

Hi FredT,

viewtopic.php?f=5&t=3843

Best Regards.

Hi Alexander,

Thank you so much.