topic Re: How do you get the map coordinates of a tool's click location in ArcGIS Pro SDK Questions

How do you get the map coordinates of a tool's click location

UmaHarano — Thu, 24 Mar 2016 21:07:57 GMT

This question was posted recently by Ted Chapin @Ted"How do you get the map coordinates of a tool's click location?"

Here is a code snippet to do this:

protected override void OnToolMouseDown(MapViewMouseButtonEventArgs e)

{

if (e.ChangedButton == MouseButton.Left)

e.Handled = true;//Let Framework know we want to handle MouseDown asynchronously

}

private MapPoint _lastClickedMapPoint = null;

protected override async Task HandleKeyDownAsync(MapViewKeyEventArgs k)

{

_lastClickedMapPoint = await QueuedTask.Run(() => ActiveMapView.ClientToMap(k.ClientPoint));

//TODO - do something with _lastClickedMapPoint

}

Thanks

Uma Harano

ArcGIS Desktop SDK Team

Re: How do you get the map coordinates of a tool's click location

WoodyHynes — Thu, 24 Mar 2016 21:10:35 GMT

Ted Chapin

Re: How do you get the map coordinates of a tool's click location

TedChapin — Fri, 25 Mar 2016 12:21:22 GMT

GeoNet fail! If you have a question, don't ask a question - start a discussion!

Re: How do you get the map coordinates of a tool's click location

TedChapin — Fri, 25 Mar 2016 13:03:13 GMT

Having a hard time translating this to VB. Need to inherit from MapTool, correct? Can't get the HandleKeyDownAsync function syntax.

Re: How do you get the map coordinates of a tool's click location

CharlesMacleod — Fri, 25 Mar 2016 16:23:35 GMT

Ted, try this (from http://converter.telerik.com/)

Protected Overrides Sub OnToolMouseDown(e As MapViewMouseButtonEventArgs)

   If e.ChangedButton = MouseButton.Left Then
      e.Handled = True
   End If 'Let Framework know we want to handle MouseDown asynchronously
End Sub

Private _lastClickedMapPoint As MapPoint = Nothing

Protected Overrides Function HandleKeyDownAsync(k As MapViewKeyEventArgs) As Task
_lastClickedMapPoint = Await QueuedTask.Run(Function() ActiveMapView.ClientToMap(k.ClientPoint))
'TODO - do something with _lastClickedMapPoint
End Function

Oh - I think also you are looking for the starting point - In Visual Studio, add a new project of type Module (within ArcGIS folder). In the project, right-click Add New Item, again in the ArcGIS folder pick MapTool or SketchTool..

There is more info here: https://github.com/esri/arcgis-pro-sdk/wiki/ProGuide-Build-Your-First-Add-in

Re: How do you get the map coordinates of a tool's click location

ThomasEmge — Fri, 25 Mar 2016 16:49:06 GMT

The templates in Visual Studio are available in C# and VB.NET. Even though most of the examples and snippets are C# VB.NET is fully supported in the VS environment.

Re: How do you get the map coordinates of a tool's click location

TedChapin — Mon, 28 Mar 2016 14:51:23 GMT

It's making more sense now. Part of my problem was that when you override a method like HandleKeyDownAsync, Visual Studio autocomplete inserts "Return MyBase.HandleKeyDownAsync(k)". But once you make the function async, the return statement becomes invalid. It's not needed. Autocomplete is not detecting the async keyword very well.

There's a good sample in the ClientToMap method docs that is exactly what I was looking for:

ArcGIS Pro 1.2 API Reference Guide

Re: How do you get the map coordinates of a tool's click location

RichardDaniels — Tue, 27 Dec 2016 19:26:28 GMT

Does this work, or should we be using

HandleMouseDownAsync instated of HandleKeyDownAsync?

protected override async Task HandleMouseDownAsync(MapViewMouseButtonEventArgs e)

{

//Convert the clicked point in client coordinates to the corresponding map coordinates.

mapPoint = await QueuedTask.Run(() => MapView.Active.ClientToMap(e.ClientPoint));

}

What is needed is a code example of the basic process of 'selecting tool from list (e.g., a combobox)', then click on map to get coordinates, then do something with them (e.g., display coord in pop-up). This is not provided as a code snip it in the SDK help documents.

BASED on the new sample published on GeoNet (7/2016) they are using:

protected override void OnToolMouseDown(MapViewMouseButtonEventArgs e) { .. }

and

protected override Task HandleMouseDownAsync(MapViewMouseButtonEventArgs e) { ... }

which appears to work.

Re: How do you get the map coordinates of a tool's click location

Wolf — Tue, 27 Dec 2016 21:15:40 GMT

Hi Richard,

This sample might help: https://github.com/Esri/arcgis-pro-sdk-community-samples/blob/master/Map-Exploration/BasicMapTool it is displaying the clicked on coordinates.

And this samples has a combo box for the selection of a specific layer: https://github.com/Esri/arcgis-pro-sdk-community-samples/tree/master/Map-Exploration/IdentifyWindow

Hope this helps.