Ralf,
Large Fonts have different fontmetrics than Small Fonts. It's generally recommended to stay away from Large Fonts because of this. With the ability to set the font preferences to a larger point size I find there isn't any reason to use large fonts at higher display resolutions.
You didn't name the FontName the control is using, you should make sure it's a TrueType font.
>The font came with Win98.
>Yes, I am using large font for my desktop.
>But why the difference is eliminated when VFP is installed together?