On Mar 8, 2012, at 9:17 AM, Mike Abdullah wrote:
>
> On 8 Mar 2012, at 14:54, Howard Moon wrote:
>
>> On Mar 8, 2012, at 6:21 AM, Mike Abdullah wrote:
>>>>
>>>> I'm really not that familiar with Objective-C and Cocoa yet, but I'm
>>>> getting a warning for something that works fine, and I hate warnings. The
>>>> warning is:
>>>>
>>>> 'NSOpenPanel' may not respond to '-setDirectoryURL:'
>>>>
>>>> I know that setDirectoryURL: is an NSSavePanel message, but NSOpenPanel
>>>> derives from NSSavePanel, so why does it give me this warning? As I said,
>>>> it works fine (i.e., the open panel starts out in the folder I specified).
>>>> Is there a case where it WON'T work? If not, then is there a way to
>>>> prevent the warning?
>>>
>>> That method was introduced in 10.6. Are you perhaps building against the
>>> 10.5 SDK or even earlier?
>>>
>>
>> Ah, yes, that's it. But I do need to support 10.5. What can I use that
>> works in 10.5 thru 10.7?
>
> Options:
>
> A)
> Bump the SDK setting to 10.6, keeping the deployment target at 10.5. Don't
> call any 10.6-only methods when running on 10.5. (i.e. check
> -respondsToSelector: or similar)
>
> B)
> Declare the new methods as categories in headers, but don't actually
> implement the methods. That will tell the compiler how to call those new
> methods. Once again, don't call 10.6-only methods while running on 10.5
>
> C)
> Fallback to older, deprecated APIs. e.g. -directory
>
Hmmm... I'm building a VST3/vstgui4 plug-in, and I think the base SDK and
deployment targets are set as required, like this:
SDKROOT = macosx10.5
SDKROOT[arch=x86_64] = $(DEVELOPER_SDK_DIR)/MacOSX10.6.sdk
When I build either a 32-bit or 64-bit build, while running on 10.6, it
executes -setDirectoryURL with no problems. I haven't tried running in 10.5
yet.
Can I keep my above settings, but do this?
if ([openPanel respondsToSelector:@selector(setDirectory)])
[openPanel setDirectory:nsParentPath];
else
{
NSURL* nsParentURL = [NSURL
fileURLWithPath:nsParentPath isDirectory:YES];
[openPanel setDirectoryURL:nsParentURL];
//[nsParentURL release]; // No...crashes! must be used by panel
}
-Howard
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