I wanted to asked whether it is possible to add the filter menu to the group column.
I mean box that is shown above the table if the grid is grouped by that column.
It is possible to sort it by clicking on that box (if sorting is enabled), but filtering is not possible.
It does not have to be a build in function, even a customized way would be great.
Normally it is not needed to show the column you group your table by. So I hide that column when it is grouped.
But then I cannot set the filter.
Displaying it is not an option because then, the table would be too big and the Information would be displayed twice.
