On Feb 29, 2012, at 1:03 PM, Howard Moon wrote:

>       I've added a Panel to a nib for an audio plug-in I'm working on, and am 
> having trouble determining how the IB Inspector settings relate to the actual 
> objects, such as an NSPanel.  In the Inspector, there are several Style Mask 
> checkboxes:
> 
>       Utility
>       HUD
>       Non Activating
>       Document Modal.
> 
>       What do those mean?  The tool tip for those says they relate to the 
> member styleMask.  Yet when I look up the NSWindow member styleMask, it leads 
> me to a link to the page "Window Style Masks", which lists the following 
> values:
> 
>       NSBorderlessWindowMask
>       NSTitledWindowMask
>       NSClosableWindowMask
>       NSMiniaturizableWindowMask
>       NSResizeableWindowMask
>       NSTexturedBackgroundWindowMask
> 
>       I don't see what the relation between these is.

Check the NSPanel class reference for additional style masks that only apply to 
panels.


>       I'm trying to show a panel that I've loaded previously from my nib. I 
> don't want the panel to show until I want it, and I need to show it via code 
> (in an NSWindowController-derived class I created).  But it either shows when 
> it loads, or it doesn't show at all (when calling showWindow:nil), depending 
> on whether I've checked the "Visible at Launch" checkbox in the IB Inspector. 
>  I was hoping one of those "style mask" properties might be the culprit, but 
> I don't know what they do.

My guess is that you forgot to set the window property of the window 
controller.  That's why -showWindow: isn't doing anything.  Check what the 
-window getter returns.

If the window is loaded from a standalone NIB, the window controller should 
typically be loading the NIB; it should specify itself as the owner of the NIB; 
in the NIB, the class of File's Owner should be set to your window controller 
class; and you should connect the "window" outlet of File's Owner to the window.

Regards,
Ken


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