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#!/usr/bin/python | |
import ctypes, ctypes.util | |
# Import CoreGraphics as a C library, so we can call some private functions | |
c_CoreGraphics = ctypes.CDLL(ctypes.util.find_library('CoreGraphics')) | |
def disable_beam_sync(doDisable): | |
if doDisable: | |
# Disabling beam sync: | |
# 1st: Enable Quartz debug | |
err = c_CoreGraphics.CGSSetDebugOptions(ctypes.c_uint64(0x08000000)) | |
# 2nd: Set beam sync to disabled mode | |
err = c_CoreGraphics.CGSDeferredUpdates(0) | |
else: | |
# Enabling beam sync: | |
# 1st: Disable Quartz debug | |
err = c_CoreGraphics.CGSSetDebugOptions(0) | |
# 2nd: Set beam sync to automatic mode (the default) | |
err = c_CoreGraphics.CGSDeferredUpdates(1) | |
# Disable beam sync | |
disable_beam_sync(True) |
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