wx.RefCounter¶This class is used to manage reference-counting providing a simple interface and a counter.
wx.RefCounter can be easily used together with wx.ObjectDataPtr to ensure that no calls to wx.RefCounter.DecRef are missed - thus avoiding memory leaks.
wx.ObjectRefData is a typedef to wx.RefCounter and is used as the built-in reference counted storage for Object-derived classes.
See also
wx.Object, wx.ObjectRefData , wx.ObjectDataPtr , Reference Counting
Class Hierarchy¶
Inheritance diagram for class RefCounter:
Known Subclasses¶wx.BitmapBundleImpl, wx.dataview.DataViewModel, wx.grid.GridCellAttr, wx.grid.GridCellEditor, wx.grid.GridCellRenderer
Methods Summary¶Default constructor. |
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Decrements the reference count associated with this shared data and, if it reaches zero, destroys this instance of wx.RefCounter releasing its memory. |
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Returns the reference count associated with this shared data. |
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Increments the reference count associated with this shared data. |
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Destructor. |
Properties Summary¶See |
Class API¶
wx.RefCounter(object)¶Possible constructors:
RefCounter()
This class is used to manage reference-counting providing a simple interface and a counter.
__init__(self)¶Default constructor.
Initialises the internal reference count to 1.
DecRef(self)¶Decrements the reference count associated with this shared data and, if it reaches zero, destroys this instance of wx.RefCounter releasing its memory.
Please note that after calling this function, the caller should absolutely avoid to use the pointer to this instance since it may not be valid anymore.
GetRefCount(self)¶Returns the reference count associated with this shared data.
When this goes to zero during a DecRef call, the object will auto-free itself.
int
IncRef(self)¶Increments the reference count associated with this shared data.
~wxRefCounter(self)Destructor.
It’s declared protected so that wx.RefCounter instances will never be destroyed directly but only as result of a DecRef call.
RefCount¶See GetRefCount