Is there a way to disable multi select?
I know this is an old question, but updates to Slickgrid now allow you to disable multiSelect in the grid options:
var options = {
editable: false,
enableCellNavigation: true,
asyncEditorLoading: false,
multiSelect: false
};
With this option, clicking while holding a ctrl or shift does nothing, and undesirably, you cannot deselect a cell with ctrl + click, or clicking the selected cell again