topic How to switch between arrow mode and marquee mode? in Archicad C++ API

How to switch between arrow mode and marquee mode?

torben_wadlinger — Fri, 12 Jun 2026 14:47:41 GMT

I try do develop my own toolbox. But I'm not able to activate the "marquee mode" and I can't find any API-call to switch between arrow mode and marquee mode.

Re: How to switch between arrow mode and marquee mode?

BerndSchwarzenbacher — Fri, 12 Jun 2026 18:11:22 GMT

Hi Torben,

I also think that there is no API call to switch between this modes.
Can you elaborate on what exactly you would like to achieve?

If you want to replicate these two buttons you might want to work with input methods and then trigger the corresponding API.
E.g. Make your own arrow mode that would trigger a point input mode and you use this to get elements below that to add to the selection or something like this.
And for your own marquee trigger a different input mode and then pass data to `ACAPI_Selection_SetMarquee`.

Best,
Bernd

Re: How to switch between arrow mode and marquee mode?

Patrick M — Fri, 12 Jun 2026 22:54:06 GMT

I have shortcuts for arrow & marquee... 1 for arrow, 2 for marquee...

there are also shortcuts for geometry method and construction method in the out of the box w/e (g & c respectively)