I have a directory change monitor python script which monitors any changes happened in a directory, I want to trigger Arcmap auto refreshing whenever a change has been detected (eg. a new line added to a file). I tried to launch the monitor program within arcmap python command window using execfile("myprogram.py"). The problem I encountered is that once the script starts to monitor and auto-refresh, the arcmap main window was locked and frozen, no way to stop it except shutting down the arcmap, although I can see the auto-refresh happened whenever there is a change. Is there a way to run the monitor script in a separate process or background without locking or freezing the main window? Here is my monitor script which is borrowed from Tim Golden,
import os import win32file import win32con import arcpy # Search for the new data ACTION = { 1: "Created", 2: "Deleted", 3: "Updated", 4: "Renamed from something", 5: "Renamed to something" } FILE_LIST_DIRECTORY = 0X0001 path_to_watch = "C:\Directory" hDir = win32file.CreateFile( path_to_watch, FILE_LIST_DIRECTORY, win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE | win32con.FILE_SHARE_DELETE, None, win32con.OPEN_EXISTING, win32con.FILE_FLAG_BACKUP_SEMANTICS, None ) while 1: results = win32file.ReadDirectoryChangesW( hDir, 1024, True, win32con.FILE_NOTIFY_CHANGE_FILE_NAME | win32con.FILE_NOTIFY_CHANGE_DIR_NAME | win32con.FILE_NOTIFY_CHANGE_ATTRIBUTES | win32con.FILE_NOTIFY_CHANGE_SIZE | win32con.FILE_NOTIFY_CHANGE_LAST_WRITE | win32con.FILE_NOTIFY_CHANGE_SECURITY, None, None ) for action, file in results: full_filename = os.path.join(path_to_watch, file) print full_filename, ACTION.get(action, "Unknown") arcpy.RefreshActiveView()
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import os import win32file import win32con import arcpy # Search for the new data ACTION = { 1: "Created", 2: "Deleted", 3: "Updated", 4: "Renamed from something", 5: "Renamed to something" } FILE_LIST_DIRECTORY = 0X0001 path_to_watch = "C:\Directory" hDir = win32file.CreateFile( path_to_watch, FILE_LIST_DIRECTORY, win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE | win32con.FILE_SHARE_DELETE, None, win32con.OPEN_EXISTING, win32con.FILE_FLAG_BACKUP_SEMANTICS, None ) while 1: results = win32file.ReadDirectoryChangesW( hDir, 1024, True, win32con.FILE_NOTIFY_CHANGE_FILE_NAME | win32con.FILE_NOTIFY_CHANGE_DIR_NAME | win32con.FILE_NOTIFY_CHANGE_ATTRIBUTES | win32con.FILE_NOTIFY_CHANGE_SIZE | win32con.FILE_NOTIFY_CHANGE_LAST_WRITE | win32con.FILE_NOTIFY_CHANGE_SECURITY, None, None ) for action, file in results: full_filename = os.path.join(path_to_watch, file) print full_filename, ACTION.get(action, "Unknown") arcpy.RefreshActiveView()
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