SMART datagrid v.1 > Classes > ColumnAutoFilter
The size of Auto Filter Item Searching Editor which is displayed in filter selection box.
If no FilterSelectorOptions.maxWidth setting, the width of filter selection box will be greater than the width of editor at least in which has set this property.
Defaults to 18.
var col = grid.columnByName('Quantity');
col.setAutoFilter({
editSize: document.getElementById('editSize').value
});