Le 5 juil. 08 à 14:08, Keith Blount a écrit :
Hi,Something that has bothered me for ages in Cocoa, but which I've always put to one side, is how to handle certain deprecated methods when supporting more than one OS. In some instances it's as simple as checking at runtime which OS is being used and using the appropriate method accordingly, but I'm wondering here about the trickier instances. For instance:I am currently overhauling printing in my application. I have a page layout accessory view and I now also want to add a print panel accessory view. My app runs on both Tiger and Leopard. - setAccessoryView: works on both Tiger and Leopard, for adding an accessory view to both NSPageLayout and NSPrintPanel. However, in both cases, -setAccessoryView: was (rather frustratingly in this case, I feel, as it worked fine) informally deprecated on Leopard. Instead, we are advised to use -addAccessoryViewController:, which uses an NSViewController. But the NSViewController class doesn't even exist on Tiger, so subclassing it and having it in the project will cause the app not to run on Tiger at all.
What make you think so ? You cna perfectly use 10.5 only symbol and target 10.4 as long as you check that this symbol exist before your use it.
if (MyLeopardOnlyFunction)
MyLeopardOnlyFunction(foo, bar, other);
You just have to be sure that your properly configure your project,
that is set SDK to th emax target version( 10.5) and set deployment
target to the min version (10.4)
So you just have to do something like this:if ([myPanel respondsToSelector:@selector(addAccessoryViewController:)] ) {
// go the nsviewcontroller way
} else {
// use the old way
}
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