为什么在NSOpenPanel中选择别名而不选择符号链接？

Question

I want to create an NSOpenPanel that can select any kind of file, so I do this

NSOpenPanel*    panel = [NSOpenPanel openPanel];

if([panel runModalForTypes:nil] == NSOKButton) {
    // process files here
}

which lets me select all files except symbolic links.
They're simply not selectable and the obvious setResolvesAliases
does nothing.

What gives?

I did some more testing and found that this strangeness
is present in Leopard (10.5.5) but not in Tiger (10.4.8).

The code above can select mac aliases (persistent path
data that lives in the resource fork) but not symlinks (files created with ln -s).

Answer 1

I cannot reproduce this. I just tried it and it works just fine. If symlink points to a directory, it shows the directory content when I select the symlink and if the symlink points to a file, I can select it as well.

Of course if the symlink points to a directory, you can only select it if choosing directories is allowed

NSOpenPanel * panel = [NSOpenPanel openPanel];
[panel setCanChooseDirectories:YES];
if ([panel runModalForTypes:nil] == NSOKButton) {
    NSLog(@"%@", [panel filenames]);
}

Answer 2

Your code sample worked for me, as well - I'm using 10.5.5 and XCode 3.1, if it matters.

If the alias is to a directory, I couldn't select the alias, since it resolved to the directory that it was pointing to, not the alias itself (the panel seems to resolve aliases by default). I was able to select an alias to a file, though.