Button size in modal window


I create project for a touch screen.

Can I set bigger button in modal windows like system.gui.confirm("") or system.gui.input("").

I know that i can create popup window but i wanna block other windows when the “popup” is open.

I have the same problem. My touch screen app some time requests operator for confirmation but confirmation box (system.gui.confirm) is not comfortable to do this (finger is bigger than mouse cursor). I there any other confirmation box dedicated for touch screen application? How do you solve such problem in touch screen applications?

you can make it a popup window and control is better