A slightly modified version of the script shared here: jakehilborn/displayplacer#137 (comment)
Adds the ability to both enable/disable monitors as well as list the available display_ids
Created
April 15, 2025 02:33
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Enable/Disable/List MacOS displays
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| #!/usr/bin/env python3 | |
| from ctypes import (CDLL, util, c_void_p, c_uint32, c_int, c_bool, POINTER, byref) | |
| import time | |
| cg = CDLL(util.find_library('CoreGraphics')) | |
| cg.CGBeginDisplayConfiguration.argtypes = [POINTER(c_void_p)] | |
| cg.CGBeginDisplayConfiguration.restype = c_int | |
| cg.CGCompleteDisplayConfiguration.argtypes = [c_void_p, c_int] | |
| cg.CGCompleteDisplayConfiguration.restype = c_int | |
| cg.CGCancelDisplayConfiguration.argtypes = [c_void_p] | |
| cg.CGCancelDisplayConfiguration.restype = c_int | |
| cg.CGSConfigureDisplayEnabled.argtypes = [c_void_p, c_uint32, c_bool] | |
| cg.CGSConfigureDisplayEnabled.restype = c_int | |
| cg.CGGetActiveDisplayList.argtypes = [c_int, POINTER(c_int), POINTER(c_int)] | |
| cg.CGGetActiveDisplayList.restype = c_int | |
| def enable_display(display_id): | |
| config_ref = c_void_p() | |
| if cg.CGBeginDisplayConfiguration(byref(config_ref)) != 0: | |
| return | |
| if cg.CGSConfigureDisplayEnabled: | |
| if cg.CGSConfigureDisplayEnabled(config_ref, display_id, True) != 0: | |
| cg.CGCancelDisplayConfiguration(config_ref) | |
| return | |
| cg.CGCompleteDisplayConfiguration(config_ref, 0) | |
| def disable_display(display_id): | |
| config_ref = c_void_p() | |
| if cg.CGBeginDisplayConfiguration(byref(config_ref)) != 0: | |
| return | |
| if cg.CGSConfigureDisplayEnabled: | |
| if cg.CGSConfigureDisplayEnabled(config_ref, display_id, False) != 0: | |
| cg.CGCancelDisplayConfiguration(config_ref) | |
| return | |
| cg.CGCompleteDisplayConfiguration(config_ref, 0) | |
| def get_active_displays(): | |
| display_count = c_int() | |
| if cg.CGGetActiveDisplayList(c_int(0), None, byref(display_count)) != 0: | |
| return | |
| displays = (c_int * display_count.value)() | |
| if cg.CGGetActiveDisplayList(display_count, displays, byref(display_count)) != 0: | |
| return | |
| return [displays[i] for i in range(display_count.value)] | |
| if __name__ == "__main__": | |
| displays = get_active_displays() | |
| for display in displays: | |
| print("Disabling Display: " + str(display)) | |
| disable_display(display) | |
| time.sleep(2) | |
| for display in displays: | |
| print("Enabling Display: " + str(display)) | |
| enable_display(display) |
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