Windows handles

[Scott Turchin]

I read somewhere that handles to applications (hwnd) can change dynamically if windows so desires?

Is this true?

Reason I ask is that I am going to store all of the handles to the browser that is open, if there are 5 browsers open I want to store all of the handles in an array until each browser is closed....


Thanks,

Scott

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Scott

[Kev Peel]

Scott,

I can't think for a moment how that would be possible, since most applications use a GLOBAL variable to store window handles on creation, if it were true, it would probably break every windows app in existence.

Of course, the handle is changed when you destroy\create a window.

BTW. Where did you read that?!?

Regards,

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Kev G Peel
KGP Software, Bridgwater, UK.
http://www.kgpsoftware.com

[Scott Turchin]

I don't recall, some VB5 book long ago I believe...
And perhaps in VB it is true...
Anyway that's the answer I'm looking for, it will make life a LOT easier to manage the windows handles and URL's I have to stick in the array...


Thanks,


Scott

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Scott

[Eric Pearson]

I am quite certain that window handles can't change spontaneously.

Perhaps they meant that if a window is destroyed and re-created it may come back with a different window hande? For example, if you use FindWindow to obtain a handle to a window, and if that window is destroyed and re-created with the same title, it will not necessarily have the same handle value as the original.

Grasping at straws...

-- Eric


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Perfect Sync Development Tools
Perfect Sync Web Site
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[Troy King]

Scott, (hi, btw, long time no see), I think you may be recalling
some pseudo-handles. I *think* real numbers for thread ids,
app instances, and (something else, can't remember) can change
in Windows, but are still usable from a fixed value inside your
app because it remaps the pseudohandle for you automatically
(a pointer to a pointer, I beleive). I think certain of these
values can't be passed to outside processes without converting
it to a real handle (DuplicateHandle()??) first.

But, I'm probably remembering it all wrong myself



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Troy King
[email protected]