SMART datagrid v.1 > Classes > GridBase
It will be fired when the user tries to display column filter selection box.
If explicitly return false within this event handler, it will not display filter selection box. It will not be fired when change the filter state by calling API.
After committing the filtering, onFiltered event will be fired.
grid.onFiltering = function (grid, column) {
if (!('#filtering')[0].checked) {
return false;
}
};