Determine whether dll is 32 or 64 bit

[ic3m4n2005]

Hello,

i need to determine whether a dll is 32 or 64 bit.
Is there any function that gives me this information before the dll is loaded ?

I hope someone has a solution :)

[VladimirF]

Don't know if there is a function that does that, but you can read that dll file and look at IMAGE_FILE_HEADER, WORD Machine. I guess it will be either
#define IMAGE_FILE_MACHINE_I386 0x014c // Intel 386.
or
#define IMAGE_FILE_MACHINE_IA64 0x0200 // Intel 64

[kirants]

Check out the first part of this article (http://www.codeguru.com/cpp/w-p/dll/openfaq/article.php/c14001__1/). There is code to get to the IMAGE_NT_HEADERS and from there , the IMAGE_FILE_HEADER is reachable.

[VladimirF]

Check out the first part of this article (http://www.codeguru.com/cpp/w-p/dll/openfaq/article.php/c14001__1/). There is code to get to the IMAGE_NT_HEADERS and from there , the IMAGE_FILE_HEADER is reachable.I think I saw a similar code published by Matt Pietrek in 1994 here (http://msdn.microsoft.com/en-us/library/ms809762.aspx) (of course, he was not looking for .NET framework version :) )

[Laurentis]

Of course there are native win32 apis !
You don't need at all to read the PE !
You can ask on advanced win32 api newsgroup :
(news://194.177.96.26/comp.os.ms-windows.programmer.win32)
where all apis have been given... for 20 years.
(even with source code, as some pros worked on Wine...)