I want to achieve this effect （button group）

[junmaqiang]

Is there any reference plan?

[Jacalz]

It is not something that we have implemented yet, no. Either open a feature request or create your own custom widget. It should definitely be doable, especially now with rounded rectangles being supported.

[dweymouth]

I did something like this as a custom widget for Supersonic implemented by packing builtin Button widgets together with no padding and using the Importance property to highlight one: https://github.com/dweymouth/supersonic/blob/main/ui/widgets/togglebuttongroup.go

It won't work well with rounded rectangles so I plan on trying to make a proper SegmentedButton widget as part of migrating Supersonic to Fyne 2.4.x (which hasn't been done yet)

[junmaqiang]

your project is good , very nice ,so cool