DisplayEvents
Demontrates how to handle notifications about display change when programming with ADLX.
Sample Path
/Samples/python/DisplayEvents
Code
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#<!--
# Copyright (c) 2021 - 2025 Advanced Micro Devices, Inc. All rights reserved.
#
#-------------------------------------------------------------------------------------------------
#-->
import ADLXPybind as ADLX
import time
# Callback for display list change
def callBackDisplayList(displaylist)->bool:
print("display list changed, current display count is: ", len(displaylist))
for index, display in enumerate(displaylist):
name = display.name()
print("\\t index: {} name: {}".format(index, name))
del display
return True
# Iterate display and display event to unplug and plug the display
def displayDemo():
# Get ADLXHelp and ADLX initialization
adlxHelper = ADLX.ADLXHelper()
ret = adlxHelper.Initialize()
if ret == ADLX.ADLX_RESULT.ADLX_OK:
# Get systemServices
system = adlxHelper.GetSystemServices()
if system is not None:
# Get displayServices
displayService = system.GetDisplaysServices()
if displayService is not None:
# Get display change handler
displayChangeHandler = displayService.GetDisplayChangedHandling()
if displayChangeHandler is not None:
# Python call back
callback = ADLX.DisplayListCallBack()
callback.call = callBackDisplayList
# Add call back
displayChangeHandler.AddDisplayListEventListener(callback)
print("Plug or unplug a display within 20 seconds.")
time.sleep(20)
# Remove call back
displayChangeHandler.RemoveDisplayListEventListener(callback)
# Release changeHandler interface
del displayChangeHandler
# Release displayService interface
del displayService
# Terminate ADLX
ret = adlxHelper.Terminate()
print("ADLX Terminate ret is: {}".format(ret))
displayDemo()
