Is there a way to customise Gantt arrows ?
Like that :
Hello Clement,
Right now, there is no built-in way to change how the links are displayed, but you can manually draw them as HTML elements by using the addTaskLayer feature:
https://docs.dhtmlx.com/gantt/api__gantt_addtasklayer.html
Here is an example of the implementation when links are displayed as SVG images:
https://docs.dhtmlx.com/gantt/samples/04_customization/22_draw_links_as_svg_images.html
Here is another example of the implementation that is closer to that screenshot:
https://snippet.dhtmlx.com/5/75d1f4b82