On Jun 8, 2014, at 12:23 PM, Seth Willits <sli...@araelium.com> wrote:
> Whether a window will appear or not has nothing to do with File's Owner. Your
> window is probably marked as "Release When Closed" in IB. It's shown once the
> first time, but after closing it it's deallocated and no longer exists so it
> can't be shown a second time. Turn that off.
Kyle pointed something out to me off-list, so now I need to backpedal and
change what I said a bit.
What I meant was whether or not the File's Owner class in IB is set or not
doesn't "really" matter to the issue at hand, but that's not true because if
it's not set then you can't connect the window outlet of File's Owner (your
window controller) to the window itself, which of course is critical.
So without setting it and connecting the window outlet, the window controller
doesn't know about the window. The reason the window is being displayed the
first time is probably because it has "Visible At Launch" checked, which will
display the window when the nib loads ("Launch" is a misleading term, really).
Once you've closed it, it can't be reopened because the window controller
doesn't know it exists (because the outlet isn't connected) and thus can't tell
it to display.
On Jun 8, 2014, at 12:28 PM, Miguel Carvajal
<macarva...@estudiantes.fisica.uh.cu> wrote:
>> When you load a nib, your code needs to access certain objects in the nib
>> (via IBOutlets) and your nib may need to set properties (like delegates,
>> data sources, and actions) to objects that exist outside of the nib. When
>> you connect to "File's Owner", you're connecting from an object in IB to
>> that object that already exists before nib is loaded.
>
> What does it means, the object that already exist before the nib is loaded?
> Do you refer in this case to NSWindowController instance?
Yes. The window controller itself exists before the nib is loaded. This is true
of whatever "File's Owner" would be for any nib being loaded.
--
Seth Willits
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