I sure you right. When I run that code in vfp environment from command windows, it's ok (I make program ex: addfont.prg). But when I add that code in my app project and built app.exe, run app.exe then reboot my machine, all of fonts I have add from app.exe does not appear in control panel/fonts and none of window's apps and vfp's app (app.exe) can not use my fonts.

Please try it on your system, thanks in advance for your help.

I'm using VFP 6.0 with SP5.

Thanks again.