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8d43b8ea39
Also updates: - importlib-metadata-0.7 - jaraco-windows - jaraco.classes-1.5 - jaraco.collections-1.6.0 - jaraco.functools-1.20 - jaraco.structures-1.1.2 - jaraco.text-1.10.1 - jaraco.ui-1.6 - more-itertools-4.3.0 - path.py-11.5.0 - six-1.12.0
29 lines
550 B
Python
29 lines
550 B
Python
import ctypes
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from ctypes import WinError
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from .api import memory
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class LockedMemory(object):
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def __init__(self, handle):
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self.handle = handle
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def __enter__(self):
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self.data_ptr = memory.GlobalLock(self.handle)
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if not self.data_ptr:
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del self.data_ptr
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raise WinError()
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return self
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def __exit__(self, *args):
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memory.GlobalUnlock(self.handle)
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del self.data_ptr
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@property
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def data(self):
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with self:
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return ctypes.string_at(self.data_ptr, self.size)
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@property
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def size(self):
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return memory.GlobalSize(self.data_ptr)
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