K_GLOBAL_STATIC and other macros

[Thiago Macieira]

Sebastian Trüg wrote:
> While we are on it:
>  What is the difference between
>  Q_GLOBAL_STATIC and K_GLOBAL_STATIC?

One you can use, the other you can't :-)

Q_GLOBAL_STATIC isn't public API and Trolltech may change it for 4.4.

The other major difference is that Q_GLOBAL_STATIC creates a function for
you, whereas K_GLOBAL_STATIC creates a pointer-like object. So, you'd
write:

  name()->member;  // with Q_GLOBAL_STATIC
and
  name->member;    // with K_GLOBAL_STATIC

K_GLOBAL_STATIC objects can also be registered for ~QCoreApplication-time
destruction, whereas Q_GLOBAL_STATIC ones are destroyed only on unload.
For that reason, you also have name.isDestroyed() (note the ., not ->) in
K_GLOBAL_STATIC.

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  Thiago Macieira  -  thiago (AT) macieira.info - thiago (AT) kde.org
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