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Data Browser selection order


I have a list in a data browser control that is set to only allow one thing to be selected at a time. It has a DataBrowserItemNotificationUPP attached to it so I can keep track of the kDataBrowserItemSelected and kDataBrowserItemDeselected events.

My plan was to have it so that if an item is selected from the list, some other controls would be activated and their data populated by whatever was selected. Similarly when there is no selection, the controls would be disabled.

The problem is that the events are happening in the opposite order of what I expected. When the first item is selected in the list, I get the kDataBrowserItemSelected correctly. When a second item in the list is selected, I get another kDataBrowserItemSelected (which causes the process to enable the other controls and populate them) followed by a kDataBrowserItemDeselected (which causes the other controls to be disabled.) So after the first item is selected, nothing else is getting enabled.

I am obviously doing something incorrectly, but I’m not sure what. I haven’t found any good documentation on using the callbacks, or why it is allowing a brief moment where two things are selected. Is there a way to get the information in the deselect/select order? Should I instead be trying to use kDataBrowserSelectionSetChanged in some way? Right now I’m thinking of writing a complicated algorithm to try and manually switch things into the opposite order, but I would prefer not to go down that route.

Thanks

Erik Allen
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