Integer with the pixel dimension of the button side for the ErgoDataGrid toolbar.
Are forecast the dimensions 16, 22 and 32: for other dimension buttons you have to indicate for this paramenter desired misure; you have to create a button picture of the desired dimension,too, to save it in the directory grid/toolbar/img with the name of the button (see files included in the indicated folder) followed by the number that enstabilish the misure passed to buttonSize and by .gif.
Default:
32