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general question 32 bit apps and 32/64 bit dlls
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Ingo View Drop Down
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Joined: 29 Oct 05
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    Posted: 21 Nov 07 at 2:20AM

Hello!

I've made the experience that dlls generated under 32 bit / winxp doesn't work on vista 64 bit systems ;-)
'Cause actually i don't have a running 64 bit system ... Is it possible to run a 32 bit dll on vista 64 bit if the dll-functions are called from a 32 bit gui application?

Thanks in advance for telling me your experiences.

Best regards,
Ingo
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mrgcms Quote  Post ReplyReply Direct Link To This Post Posted: 21 Nov 07 at 12:12PM
32 bit DLLs should be callable from 32 bit processes without problem.  However, as far as I know, there is no thunking layer between 64 bit processes and 32 bit DLLs like there was between 32 bit processes and 16 bit DLLs in previous versions of Windows.
 
I do have a Windows XP 64 bit system if you want something tested.


Edited by mrgcms - 21 Nov 07 at 12:13PM
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Ingo View Drop Down
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Points: 3524 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ingo Quote  Post ReplyReply Direct Link To This Post Posted: 21 Nov 07 at 4:20PM
Hi Dave!

Thanks for your offer.
I've sent an email to you.

Best regards,
Ingo
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mrgcms Quote  Post ReplyReply Direct Link To This Post Posted: 21 Nov 07 at 11:56PM
Application appears tp run without problems on Win XP Pro x64 - installed under the "program Files (x86)" directory.
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