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Re: How to display live Video in IDL [message #45842]

Tue, 11 October 2005 14:39

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

Mark Hadfield wrote:
> Rick Towler wrote:
>
>> About the best you can use the win API's GetActiveWindow() function to
>> get a handle to the active window. If you create the window in IDL
>> then immediately call a function to get the handle then you should be
>> fine 99.9% of the time :)
>
>
> Those sound like good odds to me! But I'm curious: what is likely to
> happen in the other 0.1%?

Well, say you run this IDL program and then click on your email client
to check for the latest gossip on comp.lang.idl-pvwave at just the right
moment after IDL has created the window but before the program has
called the DLM to make the GetActiveWindow() call. Now you'll get a
handle to your email client window, not your new IDL window, and is this
case it would most likely bring IDL down.

I use this in my directInput dlm and to be honest, I haven't had a
problem. But I'm pretty sure that at least theoretically this is an issue.

-Rick

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[Message index]

		Re: How to display live Video in IDL By: Rick Towler on Tue, 11 October 2005 14:39
		Re: How to display live Video in IDL By: Mark Hadfield on Tue, 11 October 2005 14:03
		Re: How to display live Video in IDL By: Rick Towler on Tue, 11 October 2005 10:22
		Re: How to display live Video in IDL By: btt on Tue, 11 October 2005 06:39

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