Re: Drag And Drop Killed By loadNibNamed

On Dec 1, 2011, at 12:42, Alexander Reichstadt wrote:

> I remember to have run into the same problem. Somehow the window was =
not present early enough. I ended up using NSWindowController's
>=20
> [[yourwindowcontrollersubclass alloc] =
initWithWindowNibName:@"YourNibNameWithoutExtensionNib"]
>=20
> which worked.
>=20
>=20
> Am 01.12.2011 um 11:25 schrieb SD:
>=20
>> Hello all, hope you can help.
>>=20
>> My application loads a window from a nib and then displays it.  This =
window has a Text View (NSTextView in NSScrollView).
>>=20
>> When the window is loaded from a nib using:
>>=20
>> [NSBundle loadNibNamed:@"nibfilename" owner:m];
>>=20
>>=20
>> dropping text (using drag and drop) on the NSTextView doesn't work.
>>=20
>> It doesn't seem to matter how I show the window once I load the nib. =
Have it show via "Visible At Launch", show using makeKeyAndOrderFront, =
show using beginSheet.
>>=20
>> If I copy the window into my main nib show it, then drag and drop =
works fine.  Does anyone have any ideas why the drag and drop is getting =
killed when I use loadNibNamed.
>>=20
>> Thank you.

I cannot tell you why you experience this problem. For one, I think you =
are leaving out the crucial information about why this happens. I =
expect, but have no way of knowing, that this may be a timing issue, so =
you may be showing the window too early in the process. Have you tried =
loading at (much) different times? It seems that there is a problem with =
registering drag types, so have you actually checked those? You =
certainly should check all those things and more.=20

As a general matter, you should (almost) always use one of the four nib =
loading classes (or subclasses) NSWindowController, NSViewController, =
NSDocument, or NSApplication to do the loading for you. It does what you =
do plus some more things that you (and I) don't know about but that can =
be important (for instance binding-to-owner bugs). You should have very =
good reasons to side step that. Moreover, you should be pretty =
knowledgable and experienced to know lots of difficult pitfalls to avoid =
(like this ones) before you should embark on doing your own nib loading. =
I must say that from your post I don't get the impression you are =
sufficiently qualified or have good enough reasons. So my strong advice =
is simply: don't do this.

Christiaan