vba - autocad to viewport and windows print

[FrancescoIng]

hi everybody,
i need help....i am looking for two command of vba of the layout. some example would be fantastics...

the two command are:

--> one to increase the dimensions of viewport

increase the viewport.png


-->the another to set the windows to print through the setting of two point (lower left corner e upper right corner of the area that i want to print)

windows to print.png window to print in action.png



thank you very much in advance