设置Form的
scaled := False
Delphi帮助原文：
Scaled determines whether the form adjust itself to differences
between the font used at design time and the current system font
used by a system at runtime. If Scaled is True, the form resizes
itself and all its child controls to maintain the relationship between
the size of controls and the height of text displayed in the default font.
If Scaled is False, no such resizing occurs.
