Gets the thickness, in pixels, of a flat-style window or system control border.
Returns
A size that indicates the width, in pixels, of a vertical border, and the height, in pixels, of a horizontal border.
Remarks
The border_size property indicates the thickness of a flat-style system control border in pixels.
The Width property of the border_size property indicates the width of a vertical flat-style border. The Height property of the border_size property indicates the height of a horizontal flat-style border.
The border_3d_size property of the SystemInformation class indicates the thickness of a three-dimensional (3-D) style window or system control border.