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Expose cleanup and library load functions #44

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Expose cleanup and library load functions #44

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9ca22fd
Expose load and cleanup functions
jdranczewski Sep 29, 2025
8ebcd0b
Fixes to global use of _lib
jdranczewski Oct 9, 2025
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19 changes: 14 additions & 5 deletions thorlabs_apt/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1343,10 +1343,16 @@ def set_dc_settled_current_loop_parameters(self, settled_proportional,
"""DC settled current loop: fast forward"""


def _load_library():
_lib = None

def load_library():
"""
Loads the APT.dll shared library. Calls APTInit.
"""
global _lib
if _lib is not None:
# The library has already been loaded
return
# load library
if (os.name != 'nt'):
raise Exception("Your operating system is not supported. " \
Expand All @@ -1370,17 +1376,20 @@ def _load_library():
"%s" % _get_error_text(err_code))
if (lib.EnableEventDlg(False) != 0):
raise Exception("Couldn't disable event dialog.")
# Store the library globally
_lib = lib
return lib

_lib = None
_lib = _load_library()
load_library()

import atexit
@atexit.register
def _cleanup():
def cleanup():
"""
Calls APTCleanUp
Calls APTCleanUp.
"""
global _lib
if (_lib is not None):
_lib.APTCleanUp()
_lib = None