Multiple item select DG List

[Newbie]

Is there anyone know how to make DG List item to be able to multiple select row as show below picture by press 'shift' key then loop thru mark all select icon?.

[Viktor Kovacs]

There is a separate list box type that can handle multiple selection. Use MultiSelList in your grc file, and DG::MultiSelListBox in your code. After that you need to use the multiple selection interface of the list box, e.g. use GetSelectedItems instead of GetSelectedItem.