TFormBorderStyle

type TFormBorderStyle = (

  bsNone,

A border is not used or displayed.

  bsSingle,

Single line border, the form cannot be resized.

  bsSizeable,

The form can be resized (standard).

  bsDialog,

The form is a dialog, cannot be resized.

  bsToolWindow,

Single line border, small caption, not resizable.

  bsSizeToolWin

Small caption, form can be resized.

);