uisetfont returns the selections as a structure array:
myfont =
struct with fields:
FontName: 'Century Schoolbook'
FontWeight: 'normal'
FontAngle: 'normal'
FontUnits: 'points'
FontSize: 9
You can use this information to set font characteristics of a component in the UI:
btn = uicontrol;
btn.FontName = myfont.FontName;
btn.FontSize = myfont.FontSize;
Alternatively, you can set all the font characteristics at once:
Add Components to a Programmatic App