Zoom in to mouse location by mouse wheel events

[Sable]

Hi,

I am interested to zoom in to the mouse location pointed on an IMAQ image using the mouse wheel while I hold down the control key. Similar to how it is done in Windows.

Aware IMAQ ROI tool buttons have a zoom function that works exactly the way I want it to but I am interested to implement it through the mouse wheel event.

Any advise?

I am using LabVIEW 2013

- Sable

[MarcDub · Accepted solution]

his is pretty easy to do with Imaq images using property nodes and an event structure. Below is the block diagram. I am just zooming in and out by a factor two but you can obviously change the zooming factor the way you want.

I am attaching the VI but it is in LabVIEW 2016 but I suppose you can recreate the block diagram using the image below.

[Sable]

Thank you.