The windows of my program display normally in my PC. But in other computer
that different desktop apperance (different font definitions), the window
sizes change, and texts on these windows diplay outside.
What can I do? Thanks.

If your App Window is just like a dialog box then design your Window under
small font system and set the Window boarder style to bsDialog or
bsTooWindow. Other wise you should resize your Window manually according to
the font.

Regards,
            Binzhong

Thanks.
But, what's the exact relationship of window size and font size?
news:3c1ecf89_2@dnews...

Stretching or Shrinking of a Form is based on the height of Font which
is specified by Form's Font property.

1. At design time, Form save the height of font by using
  Canvas.TextHeight Method into the Form File.
  Form also save Logical Inch.
2. At run time, Form look at the logical Inch and Compare
   with saved one.
3. If Different, and Scaled property = True, Form change the Height of Font.

   Font.Height = FontHeight * NewLogical Inch / Old Logical Inch.

4. After Changing Font.Height property, Form get new Font Height

   NewFontHeight = Canvas.TextHeight

5. Form Stretch or Shrink Everything by unsing Scale Factor

    Scale Factor = NewFontHeight / Saved Old Font Height

   If AutoScroll property = true, the size of th form is not resized,
   but controls and fonts are resized.