Signal layerCreateComplete and etc relevant to Graphics- and MessageGroupLayers?

[NorbertThoden]

The class 'layer' emits the signals layerCreateComplete, layerCreateError and layerProgress.

Ok, for basemap layers they are usefull. Are the relevant for Graphics- or MessageGroupLayers???

Unfortunately this issue is not documented...

Related to EsriRuntimeQt SDK (C++); Version 10.2.6
 

Thanks

[LucasDanzinger]

Norbert-

MessageGroupLayer inherits from Layer, so these signals are still applicable. GraphicsLayer would also inherit these signals. However, Graphic itself would not.

Thanks,

Luke

[NorbertThoden]

Hi Lucas!

Thank you very much for your very quick response!!

I understand your informations, i saw that looking at the inheritance tree.

But my questions has a slightly different focus:

Loading a (topographic) basemap layer requires to wait for signal layerCreateComplete before working with this layer.

Do i have to wait for that signal in case of Graphics- or MessageGroupLayers???

I connect slots to that signals of those layers but the are not fired.

Is it a bug or is that fact only missing within the documentation?

Thanks, Norbert

[LucasDanzinger · Accepted solution]

Norbert-

You're right, it doesn't seem to be firing for me either. This looks like an oversight on our part, so I recommend you log a bug through technical support for this. However, I spoke with the developer of this part of the API, and he suggested that the message group layer is unique (kind of like a graphics layer), and you shouldn't need to wait for layer create complete signal to emit, but rather you can just immediately add it to the map. This returns a bool, so make sure this returns true.

Thanks,

Luke

[NorbertThoden]

Hi Lucas!

Thanks for contacting the developer. Until now it was an assumption that its not necessary to wait for the signals. Now i feel confirmed 

I will follow your suggestion and log a bug report soon.

Additionally i am hoping that will continue support me and my (simple) questions here in the forum.

(The German esri employees suggested to use esri ideas and this forum. Based on your answers i got quick and valuable help - thanks a lot. I hope that the support we increase their effectiveness. See the current cases 93879, 94288, 94409, 94410 and 94437.)

Thanks,

Norbert

[NorbertThoden]

ESRI support created:

[ENH-000090236 Documentation update: Signal layerCreateComplete shouldn't fire the graphics layer as well as the MessageGroupLayer. This needs to be documented in ArcGIS Runtime for Qt version 10.2.6 documentation.]