| win32-changenotify stuff |
[Jan. 23rd, 2005|06:47 pm] |
Tonight's work has consisted of getting more detailed information out of win32-changenotify. This has meant replacing FindFirstChangeNotification() with a CreateFile() + ReadDirectoryChangesW() combination.
It works, except for one thing - I don't know how to setup a timeout for ReadDirectoryChangesW(). That means you can do this:
cn = ChangeNotify.new('C:\',false,flags){ |s|
puts "Something changed"
puts "File: " + s.file_name
puts "Action: " + s.action
}
The problem is that cn.wait doesn't work. Why? Because ReadDirectoryChangesW() doesn't return a HANDLE. It only returns TRUE/FALSE. So, I can get a notification that something has changed, but I don't have anything to pass to a wait function.
I suspect the answer is to use a FileIOCompletionRoutine plus an OVERLAPPED structure, but that is more work than I'm willing to put into this at the moment. For now, it just waits indefinitely. |
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