Gets the default width, in pixels, for menu-bar buttons and the height, in pixels, of a menu bar.
Returns
A size that indicates the default width for menu-bar buttons, in pixels, and the height of a menu bar, in pixels.
Remarks
The size.width() value of this property indicates the default width for a button on a menu-bar, in pixels. The size.height() value of this property indicates the height of a menu bar, in pixels.