How to move and change font of controls at runtime ?

Question

c# - winform
How to get list of installed fonts - into combobox.
When enduser click on a label or textbox, some markers should appear arround the control,
And how to change the font of a selected control.

I also want, when a control i selected and if I press some keyboard arrowkeys, that controls shuld move 1mm in the according direction.

Many questions, but...maybe there is some simmilar example ?
Thanks a lot.