\pard\tx960\tx1920\tx2880\tx3840\tx4800\tx5760\tx6720\tx7680\tx8640\tx9600\f0\b0\i0\ulnone\fs28\fc0\cf0 Q: How can I tell which version of the system my application is running under? In particular, how can I tell whether my application is running under Release 2 or 3? \
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A: This can be useful to know, for example, you have a Release 2-compiled application that would like to conditionally take advantage of Release 3 features, or you have some bug-workaround code necessary for Release 2 that you don't want executed when your application runs under Release 3.\
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You
\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\fc1\cf1 can do this through various means—
\pard\tx960\tx1920\tx2880\tx3840\tx4800\tx5760\tx6720\tx7680\tx8640\tx9600\fc1\cf1 for a specific piece of functionality, you might want to directly ask the object in question. For example, you could use
\b objc_getClass
\b0 () to determine if the NXHelpPanel class exists, or you could query an NXImage to see if it responds to
\b imagePasteboardTypes
\b0 : before trying to access its Release 3 functionality.\
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To get the version number of the Application Kit as a whole, you can ask the Application class for its
\pard\tx1140\tx2300\tx3440\tx4600\tx5760\tx6900\tx8060\tx9200\tx10360\tx11520\b\fc1\cf1 version
\pard\tx960\tx1920\tx2880\tx3840\tx4800\tx5760\tx6720\tx7680\tx8640\tx9600\b0\fc1\cf1 . For Release 3.0, it was incremented to two, previously, it was one.\
