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Missing GeoCanvas in DrawCore migrating to Wpf

#1

Hi,

I am doing some work to investigate converting our application from WinForms to Wpf. In our current (WinForms) application we do a lot of custom drawing by overriding DrawCore in the EditInteractiveOverlay and other interactive overlays. We use the canvas argument passed to DrawCore for our drawing. I have been unable to see how we could accomplish the same thing in the Wpf version of MapSuite. Can we create a GeoCanvas (PlatformGeoCanvas?) inside DrawCore and use it for our custom drawing?

Thanks!

Steve

#2

Hi Steve,

In WPF you should want to override the function DrawTileCore.

Please notice:

  1. The canvas here is DrawingVisualGeoCanvas. DrawingVisualGeoCanvas drawingVisualGeoCanvas = geoCanvas as DrawingVisualGeoCanvas;
  2. In WPF each tile is a standalone control, so the DrawTileCore works for each tile. If your logic is works for entire map, please modify it to suitable the drawingVisualGeoCanvas.CurrentWorldExtent.

Wish that’s helpful.

Regards,

Ethan

#3

Ethan,

That did it. Thanks for your help.

Steve

#4

Hi Steven,

I am glad to hear that’s helpful.

Regards,

Ethan