64-bits programs

[yxq]

Hello,
Which VB version can make 64-bits programs?

Thank you
Steven

[Cor Ligthert]

yxq,

That depends what you mean with 64 bits programs. It is not so that on the
new 64 Windows OS the 32 bits programs don't work.

On many demands from the classic VB developpers has Microsoft decided not to
optimize the 64bit Net version for 64bit use. The integer stays using 32
bits and with that has a slightly lower performance than it could have been.

When you want to optimize it than you have probably to change all integers
to Int64 yourself.

Cor

[Jay B. Harlow [MVP - Outlook]]

Steven,
..NET 2.0 (VS.NET 2005, aka Whidbey due out later in 2005) supports both a
32-bit runtime & a 64-bit runtime. NOTE: VS.NET itself remains 32-bit,
however the assemblies created can be 32-bit or 64-bit...

For details see:

http://lab.msdn.microsoft.com/vs2005/
As Cor suggests the Integer stays 32-bit which IMHO will ensure your code
runs the same, unmodified, on both the 32-bit framework & 64-bit framework,
as any attempt to change the size of Integer will cause more problems then
it will solve. In other words you can compile your program once & it will
run identically on both the 32-bit & 64-bit framework. The 64-bit framework
will simply give you access to significantly more memory. The "tricky" parts
are going to be how much P/Invoke (Declare statements) you used, as they are
platform specific... My understanding is you can take 32-bit assemblies &
run time "as is" on the 64-bit framework if you did not use any P/Invoke
statements...
In addition to the above link, the follow links lead to 64-bit specific
information.
http://communities.microsoft.com/new...y&slcid=us

http://blogs.msdn.com/joshwil/

http://msdn.microsoft.com/msdntv/epi...B/manifest.xml

Plus there have been a couple of threads in this newsgroup discussing it,
the thread titled "Integer Do's And Don'ts" from October 15-18 2004 seems to
be the longest & discusses the size of Integer the greatest...

Hope this helps
Jay
"yxq" <ga***@163.net> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...
| Hello,
| Which VB version can make 64-bits programs?
|
| Thank you
| Steven
|
|