I have a map project with some business layers that my users want to edit. For that, the users sometimes need to sketch a support line in a temporary layer. When they are satisfied with the support line, they edit objects in the business layers by tracing along the support line. It sounds like a backwards way of doing things, I know, but it actually makes sense, when the edits you are doing are complex, and sometimes depends on a lot of different background data.
Now, my problem is, that I want to activate the construction tool for the support layer by the click of a button. I don't want the user to go into the Create Features tab, and activate it there. Actually, I'd prefer to hide the Create Features tab entirely by configuration, but I can only do that if I can activate construction in code. However, I haven't been able to find examples on how to do this. So now, i turn to you, dear colleagues, in the hope that you can help me.