Updating the UI while converting databases to V5

[jda]

> 
> Hi Jon,
> 
>> In RS Cocoa you can't even *read* a property from a UI element (e.g. a window)
>> from a thread.
> 
> Do you mean that only main thread of app can do that in RB?
> 
> What can do other threads then?
> 
> You cannot have N windows, each working with own thread ???
> Not cool somehow
> 

No, you can't. You can have as many threads working as you like, but they can't touch properties of the an UI elements (updating windows, manipulating lists, etc.). Only the main thread can do that.

Jon