topic How to delete Graphics in QML in Qt Maps SDK Questions

How to delete Graphics in QML

KanjaSousuke — Mon, 10 May 2021 06:50:53 GMT

Hi.

I try to delete Graphics in QML.

My code is

onMouseClicked: { clickPointBuilder.points.addPoint(cPoint) wayPointMakeGraphic.geometry = clickPointBuilder.geometry clickPointLineBuilder.addPoint(cPoint) wayPointLineMakeGraphic.geometry = clickPointLineBuilder.geometry } Item{ focus: true if(event.key === Qt.Key_C){ console.log("OK CLEAR") clickPointBuilder.points.removeAll() clickPointLineBuilder.parts.removeAll() } }

But, This code have a flaw.

I want to delete it when I press the C Key.

It will be deleted when I click the screen again after pressing the C key.

How to delete Graphics?

Re: How to delete Graphics in QML

Nicholas-Furness — Mon, 10 May 2021 16:28:04 GMT

Simply updating the builder will not update the graphic's geometry. After you removeAll() on the builders, you need to set the geometry on wayPointMakeGraphic and wayPointLineMakeGraphic from the builders again, as you do in your onMouseClicked method. This should set the geometries on the graphics to valid, but empty geometries.

Re: How to delete Graphics in QML

KanjaSousuke — Mon, 10 May 2021 23:10:16 GMT

Thanks.
I can do it.