Le 7 oct. 2009 à 06:42, Kyle Sluder a écrit :
Please read the 10.6 Foundation release notes, particularly the
section entitled "Formal protocol adoption":
http://developer.apple.com/mac/library/releasenotes/Cocoa/Foundation.html
We compile dual-mode code using the following:
@interface Subclass : Superclass
#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6
<ConformingProtocol>
#endif
In the case of conformance to multiple protocols, some of which are
unavailable pre-10.6, we use this:
@interface Subclass : Superclass <Protocol1
#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6
,Protocol2
#endif
It's a mess, but it works, and the benefit of static type checking far
outweighs the cost. (And it also motivates you to drop 10.5 support.
:D)
--Kyle Sluder
That's the way to go, but MAC_OS_X_VERSION_10_6 is not defined on 10.5
SDK.
So you have to add another couple of line at the top of the file (or
in a prefix header):
#ifndef MAC_OS_X_VERSION_10_6
#define MAC_OS_X_VERSION_10_6 1060
#endif
-- Jean-Daniel
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