On Aug 12, 2014, at 6:14 AM, Jonathan Taylor <jonathan.tay...@glasgow.ac.uk> wrote:
> I am trying to implement a popup menu in an NSTableView column. I seem to > have the bindings all set up so that the values in my NSArray are updated > according to the options the user selects in the table. However, I would like > to have some way of accessing the tag on the menu item that was selected for > each row. I thought I could wire up an outlet to the NSMenu object attached > to the table column, but when I later attempt to access the relevant menu > item in the menu (in order to look up its tag), I get the following runtime > error: > >> -[NSMenu itemAtIndex:]: message sent to deallocated instance > > I do not encounter this error if I bind to a standalone popup menu, so I > don't think I'm doing anything wildly stupid here. I can imagine that within > the table the popup menu objects are being dynamically allocated, so the > outlet plan isn't working out. It's an "intuitive" mistake to made--I have made it a few times myself. It is not the case that there is a single menu for the column. In fact, there is a different NSPopupButtonCell for every row with (hopefully) a different NSMenu for each cell. If you construct it all in IB, this is what you get at run-time. > My question then is how should I access the tags in the popup menu in order > to work out which tag corresponds to the selected item in each row? If I understand your setup correctly, the most direct route is to set an action on each menu item. HTH, Keary Suska Esoteritech, Inc. "Demystifying technology for your home or business" _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
