On 2009-10-30 at 18:20:36 [+0800], Stefano Ceccherini <stefano.ceccherini@xxxxxxxxx> wrote: > I'm adapting an application of mine to the haiku layout api, but I hit > a problem which could be a bug in the layout implementation, or just > an error from my side: > > The attached code will display a window which can't be resized > horizontally at all. A BButton has a maximum width (equal to its preferred width). In your case fStartStopButton is thus limiting your maximum window width. You can set an explicit maximum width on the button or add glue in the button's horizontal group to override this behavior. CU, Ingo