We already check that IsOk() returns true before calling these methods,
there is no need to do it again inside them.
Generally speaking, private functions may rely on public ones doing the
precondition checking.
It must use wxGenericAnimationCtrl as the base class in wxRTTI, as
otherwise wxAnimation::IsCompatibleWith() would fail in this case for
the generic implementation of wxAnimation.
Even though this is not really the case at the code level, this makes
more sense, as wxGenericAnimationCtrl adds methods to the interface
implemented by wxAnimationCtrl.
This also allows to avoid having notes indicating that some methods
don't work for the native version of the control -- by simply not having
them there.
API of wxAnimationCtrlBase practically forces the derived classes to
have such method, so just add it and make GetAnimation() a simple
non-virtual accessor.
Simplify and streamline animation classes relationship: wxAnimation is
the only public class representing an animation and it can be created by
both the native wxAnimationCtrl and wxGenericAnimationCtrl using the new
public CreateAnimation() method.
Replace wxAnimationImplType enum with more flexible type info based
check.
This is just unnecessary and having wxAnimation::m_refData->m_refData is
confusing, both in wxGTK version where it's not used and in the generic
one where it is, but can be replaced by more type-safe m_decoder.
Add menu item to switch to the generic version when using the sample on
a platform where a native version is available (i.e. wxGTK) in order to
allow testing it there easily.
This allows to easily test for the native control existence and also
whether wxGenericAnimationCtrl is really different from wxAnimationCtrl.
It also allows to avoid explicit check for wxGTK in common code.
They're the same thing, and we still keep WXDLLIMPEXP_ADV in the
existing code, but as this line was just moved to a new place, update it
to use the more appropriate DLL export declaration too.
No real changes.
