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I'm developing a plugin that will enable the grid decorations(like copyright, scale bar) on the map canvas, but I don't find any clue on how to do it.

Just to clarify I don't want to create a grid inside a layer, I just want to enable the decorations grid as shown in the image below.

enter image description here

I've searched in the QGIS GUI and QgsMapCanvas API without any luck.

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  • To draw the grid QGIS uses theQgsDecorationGrid class which is not exposed through the API. A workaround is well explained in this answer. Here is another link to give you an idea of which project entries you need to write to enable the grid: github.com/qgis/QGIS/blob/master/src/app/decorations/…
    – CodeBard
    Mar 15, 2022 at 15:40
  • Thanks, @CodeBard, but the approach on the answer works when I save and reload the project. I need a workaround like in the cheat sheet, but for the QgsDecorationGrid. Unfortunately, I don't find yet what do I have to override in the grid render method to enable the grid without reloading the project.
    – Francisco Camello
    Mar 16, 2022 at 12:33

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