Android Question Square buttons

[PierreA]

Hello, my buttons are rectangles without round corners. When I press one they become round.
Wich property is the cause of this?

 

[PierreA]

Problem solved, I had chozen statelistdrawable, and one of the states had a corner radius of 0.

 

[klaus]

Where do you define the Buttons, in the Designer or in the code?
The property is the StateListDrawable.
You may have a look at chapter 11.1 View Drawables in the B4A User's Guide.