Start Building Professional
Web Apps Today

How robust is the support for context menus on a treegrid? Essentially, I'm using a 1 column grid with a tree column and I want different context menus to show up depending on which tree level is being clicked on. I couldn't readily find information on how to do so. I tried using the setOnBeforeContextMenu(func), but that seems to disable the menu (menu doesn't show up). Where can I add conditions that will help me decide which menu should be displayed and whether a menu should be

displayed or not.

> I tried using the setOnBeforeContextMenu(func),

This is correct solution, this event occurs before menu showing and retrieves element ID (combination of row and cell) - any operation against menu can be executed here.

You need to return true, from such event handler, in other case (if false or nothing returned) context menu will not be shown at all.

> Also, if I set a column type to tree, can I also make that column

> read-only?

Next command controls this behaviour:

Not much can be said in addition to the reply above, but you also can check download treeview and ghannt chart and find out what we have probably missed in our explanation.