Typically I think a Mac user expects to be able to return to a previously saved value by using Undo.

On Jul 31, 2009, at 11:54 AM, Alexander Bokovikov wrote:

Hi, All,

Hope this is not an offtopic here...

I'm quite new in Mac world, and one of essential differences from Windows, which I've noticed, is how Preferences changes are applied. Unlike to usual Windows GUI, preferences are applied instantly on Mac, i.e. just as user changes a value. There is no "Cancel" button resetting values to the state, which they had at the moment, when Preferences panel was opened. Though there is "Restore Defaults" button, but it does just what it says - it restores so called "factory defaults", which are not the same, as previously saved values.

I'm reading "Cocoa Programming" by Aaron Hillegass, now, and he describes just the same Preferences functionality, as above.

Am I missing something? Or is this the general user interface building strategy for Cocoa applications or for Mac OS? Is it assumed that user will never wish to return to previously saved values?

Thanks.
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