16 lines
462 B
Python
16 lines
462 B
Python
import weakref
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from wx.glcanvas import GLCanvas
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class CanvasContainer:
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"""A helper class to store a reference to a canvas.
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If a canvas is hard referenced there may be cyclic references leading to memory leaks.
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Subclass this class if you intend to store a reference to the canvas."""
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def __init__(self, canvas: GLCanvas):
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self._canvas = weakref.ref(canvas)
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@property
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def canvas(self) -> GLCanvas:
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return self._canvas()
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