I would like to add custom columns for gantt.
But when I see the example source code ( dist\gantt-4.2.6\examples\salesforce\src\lwc\gantt_component ), only prepared column is used.
(Prepared column like the column mentioned on the below document.) https://www.bryntum.com/docs/gantt/#Gantt/column/AddNewColumn
if there is some example of using custom column, I would like to check it.
Event if I extends Column class, cannot I create column dymanically?
I would like to change column data dynamically on the screen like scheduler pro. (in scheduler pro columns data is given by array variable.)
To add a new column type, you have to extend a class and register the type.
If you just want to use it, check any of our examples. The file you need to check in lwc is placed at /examples/salesforce/src/lwc/gantt_component/gantt_component.js.