All rights reserved.There are few Python libraries for user input automation, such as: (or to a VNC server running as a Windows service, ifĭisplay not available (Reasons: (Typically) Disconnected RDP session or minimized RDP client.)Ĭopyright © 2021 froglogic GmbH. To restore the display, log in to the physical console TheseĬoordinates are required for many mouse basedĢ) Sending "Window Messages" is paused or hangs.Īmong others, sending Window Messages is required Without rendering the coordinates of GUI elements Lack of a display causes these general problems for This is usually caused by connecting and thenĭisconnecting (or minimizing) an RDP client to a test.pyĮxample log entry when the display is not available: WARNING:ĭisconnected RDP (Remote Desktop Protocol/Client) fatal ( res ) raise def main_original (): startApplication ( "." ) #. Import os from remotesystem import RemoteSystem def main (): try : main_original () except : res = RemoteSystem (). Step 2: Invoke display_available.exe in case of errors: Into SQUISH_DIR\bin or into any of the folders in the PATH environment variable. Squish script commands hang indefinitely. Test script runtime errors because application does not respond to Squish anymore. Test script runtime errors because objects cannot be found. Screenshots are all black, all white or show some distorted image or random content. Other reasons for no display being available:Īpplication being started from a Windows service (directly or indirectly).Īpplication being started from the Task Scheduler (because that is also a Windows service).įor more information and recommended setup steps to avoid this type of problem. While the physical display is powered off due to power saving.Īfter an RDP (Remote Desktop) connection has been established and the RDP client has been minimized or disconnected/quit. However, there are a number of cases when the display becomes unavailable: The physical monitor/display attached to the computer is usually used to view the "display". The "display" is where the desktop and applications can be seen. GUI Automation on Windows requires an available "display" in most cases. Detecting lack of a (rendering) display on Windows
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