Re: Modal session requires modal window

FROM : Mike Vannorsdel
DATE : Thu Jan 09 23:32:01 2003

Only use
beginSheet:modalForWindow:modalDelegate:didEndSelector:contextInfo: to
open the sheet.  You need to also supply a modal delegate object (which
has the didEndSelector: message for this sheet).  Only in your
didEndSelector: message should you put endSheet: and orderOut:.

So your two problems was using runModalForWindow: (which is for stand
alone modal windows, not sheets) and using endSheet: and orderOut:
right after opening the sheet.  Unlike runModalForWindow:,
beginSheet... does not wait for the sheet to be closed to return.


On Thursday, January 9, 2003, at 01:25  PM, iUNI Technologies Corp.
wrote:

> I am trying to create a sheet for a window but I keep getting "Modal
> session requires modal window" error at runtime.
>
> I have two nib files, the parent window (mainWindow) is in the first
> nib while the sheet window is in the second nib file. I am not sure
> how to connect the two via IB either.
>
> I'm stuck!
>
> [NSApp beginSheet:nagWindow
>        modalForWindow:[Controller valueForKey:@"mainWindow"]
>        modalDelegate:nil
>        didEndSelector:nil
>          contextInfo:nil];
>    [NSApp runModalForWindow:nagWindow];
>    [NSApp endSheet:nagWindow];
>    [nagWindow orderOut:self];