Hi Herb,

Yes they are fully supported, both canvas and custom.

Due to the responsive nature of CSS and the fonts used on mobile devices you may need to increase the size of the buttons if you want to implement it that way. To get all this to work across all types of devices I do some scaling.

You may want to just use a footer menu and prefix the captions with a + e.g.

+Add,View,Delete

That will layout the buttons across any device size and you can just use the footer menu delegate to do whatever you want.