Listen for new windows created

Posted By: obrienslalom | Apr 22nd @ 9:42 AM
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#Apr 22nd @ 9:42 AM
obrienslalom
obrienslalom
(2 2 2 3) *3 | 3 3 3

I wrote an application to launch a bunch of instances to application 'X' (through a shell command).  The program is responsible for repositioning the windows once I have retrieved their hwnds.  My question is, what is the best way to wait for the application to actually create the window.  Right now I'm just waiting until I can find it using EnumWindows.  Obviously, I can run into some problems here, especially since sometimes the title is identical across multiple instances.

-I can probably associate them with the pid that is launched.
-Is there a callback that I can get a notification when a new window is created?

Let me know if you have any thoughts.

#Apr 24th @ 4:13 PM
Matthew van Eerde
Matthew van Eerde
AKA Maurits
You could listen for accessibility events. See SetWinEventHook.

http://msdn.microsoft.com/en-us/library/dd373619(VS.85).aspx

EDIT: specifically, EVENT_OBJECT_SHOW is probably what you're interested in.
#Apr 29th @ 11:21 AM
obrienslalom
obrienslalom
(2 2 2 3) *3 | 3 3 3
yes!  That was exactly what I was looking for.  I figured there had to be some way of getting that notification.

Now, implementing it with JNA is a bit more of a challenge than I expected, but that's a separate issue =). 

Thanks man.
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