Officially supported? Yes. With no changes? Largely, but you usually configure and compile it with your application for the platform you're targeting, so the vast majority of your code should be the same, but it might require some tweaking to any hardware specific initialization.
You can also run it under X using an SDL backend.
One thing to note though, is that, unless they added it in 9.1, certain mouse control schemes that we've come to expect from desktop applications aren't supported. Since it was made primarily for touch screens, it only supports mouse click (tap) and long press, so it doesn't support things like mouse wheel scrolling in a scroll box, or mouse button right click for example. But tapping, sliding, flinging controls and screens like it's a smartphone work really well. I had made a first pass at implementing support for more desktop mouse functionality a while back, but the maintainer wanted a more generalized solution to what I had done, and I haven't had a chance to go back and play with it again. It's pretty easy and fun to hack on the code base. It might not fit the bill for all UI problems as it's pretty low level, but it's remarkably robust and featureful and I had a great time using it for a number of applications on a custom desktop OS in a similar vein to the linux framebuffer.
You can also run it under X using an SDL backend.
One thing to note though, is that, unless they added it in 9.1, certain mouse control schemes that we've come to expect from desktop applications aren't supported. Since it was made primarily for touch screens, it only supports mouse click (tap) and long press, so it doesn't support things like mouse wheel scrolling in a scroll box, or mouse button right click for example. But tapping, sliding, flinging controls and screens like it's a smartphone work really well. I had made a first pass at implementing support for more desktop mouse functionality a while back, but the maintainer wanted a more generalized solution to what I had done, and I haven't had a chance to go back and play with it again. It's pretty easy and fun to hack on the code base. It might not fit the bill for all UI problems as it's pretty low level, but it's remarkably robust and featureful and I had a great time using it for a number of applications on a custom desktop OS in a similar vein to the linux framebuffer.