Am I using BeginSheet right? (MonoMac)

Question

I have a feeling that I've either stumbled upon a bug (unlikely) or that I'm just using this function wrong (probably). I'm trying to make a sheet appear on my MainWindow. For some reason though, the sheet window pops up as a regular window without a toolbar and is in no way connected to my MainWindow at all.

Now I'm pretty new to cocoa and MonoMac so you'll have to forgive me, anyways, heres the code:

        TvShowSheetController sheet = new TvShowSheetController ();
        NSApplication.SharedApplication.BeginSheet (sheet.Window, Window);

What am I doing wrong here?

score 3 · Accepted Answer · answered Mar 02 '11 at 16:05

3

Aha! Setting my sheet's window property "Visible at Launch" to false solved my problem :)

answered Mar 02 '11 at 16:05

Robin Heggelund Hansen

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score 0 · Answer 2 · answered Mar 02 '11 at 05:45

0

Are you certain that Window is the window you wish to attach the sheet to?

An example from my code using an NSAlert:

alert = new NSAlert ();

alert.AddButton ("OK");
alert.MessageText = "Message";
alert.InformativeText = "Informative.";

alert.BeginSheet (Window, delegate {
    alert.Dispose ();
    alert = null;
});

answered Mar 02 '11 at 05:45

Geoff Norton

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Ok, this code works (altough I get a horrible amount of warnings about leaks :S). How can i get this working using a window instead of alert? – Robin Heggelund Hansen Mar 02 '11 at 15:57
If you're getting leaks, you're doing work on a background thread with NSObjects without a NSAutoreleasePool. Wrap your code in using (var pool = new NSAutoReleasePool ()) {}. However, you should never be modifying the UI on any thread that isn't the main thread. – Geoff Norton Mar 02 '11 at 16:07
As far as I know I'm not running any background thread with NSObjects, unless BeginSheet starts one? – Robin Heggelund Hansen Mar 02 '11 at 19:49

Am I using BeginSheet right? (MonoMac)

2 Answers2