Marc,

>DOS printing's commands don't let me choose specific font or size ;
>Which are VFP printing's commands that let me choose them before printing ?

>If I use proportional fonts (arial) , I have to set printer to
>specific positions (x,y) before printing each data of an array ;
>Otherwise, I don't get columns well drawn.
>In basic , commands setposx and setposy were useful therefor ;
>How can I do it in VFP ?

I've never used TEXTMERGE to create reports like you are doing. I either use the native reports or in a couple of cases use ??? to specifically send PCL5 language printjobs directly to LaserJet printers.

If you are using TEXTMERGE you have to send all the printer language appropriate commands to the printer to select fonts, sizes and output locations.

If you use ?/?? to output the report look at SET PRINTER for setting fonts. I'd strongly suggest you use a native VFP report instead though.

>VFP should also give commands to print lines,ellipses,.....

If you use the native VFP report you can easily use lines, ellipses.