Re: NSWindow
Re: NSWindow
- Subject: Re: NSWindow
- From: mw <email@hidden>
- Date: Sat, 18 Jan 2003 13:20:39 -0500
On 1/18/03 1:05 PM, "Shaun Wexler" <email@hidden> wrote:
>
On Saturday, January 18, 2003, at 09:50 AM, Matis Schotte wrote:
>
>
> hi,
>
> Which function is called when a window closes? i will bring up a
>
> save/dont save dialog when a NSWindow closes by the user ...
>
> thx for answers!! :)
>
> smat
>
>
Add this to your program, in the object in which you wish to perform
>
the save/don't save dialog:
>
>
[[NSNotificationCenter defaultCenter] addObserver:self
>
selector:@selector(windowWillClose:) name:NSWindowWillCloseNotification
>
object:window];
>
>
>
- (void) windowWillClose:(NSNotification *)notification
>
{
>
NSWindow *windowAboutToClose = [notification object];
>
>
if (windowAboutToClose == myWindow)
>
[NSApp beginSheet:mySavePanel modalForWindow:myWindow
>
modalDelegate:self didEndSelector:@selector(sheetDidEnd:)
>
contextInfo:nil];
>
>
}
>
>
- (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode
>
contextInfo:(void *)contextInfo
>
{
>
[[NSNotificationCenter defaultCenter] removeObserver:self
>
name:NSWindowWillCloseNotification object:window];
>
>
// handle the returnCode
>
}
No! Don't do that! You never want to override a standard delegate method
with a notification center method!!! If your object is a delegate of the
window that you want to display the save sheet on, then scrap the
NSNotificationCenter code at the top of the above example. If it isn't a
delegate, then change the name of the method to something other than
windowWillClose: for clarity's sake.
mw
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| References: | |
| | >Re: NSWindow (From: Shaun Wexler <email@hidden>) |