Lau Han Ching

do i need to rewrite a 32bit software to work at 64bit OS
and which vista edition can use to write .net software


Re: Show and Tell do i need to rewrite a 32bit software to work at 64bit OS

Kea

The rewriting part depends on your programming language. For .NET, you will have to inspect issues such as pointers, as they work differently on 64-bit from 32-bit. For writing .NET software, you need any version or edition of Windows since Windows 2000, so any edition of Vista should work fine.




Re: Show and Tell do i need to rewrite a 32bit software to work at 64bit OS

Lau Han Ching

so you mean a 32Bit .NET software still can work fine in a 64Bit OS.




Re: Show and Tell do i need to rewrite a 32bit software to work at 64bit OS

Kea

Check the MSDN .NET documentation, it's all in there. Here are som URLs:

http://msdn2.microsoft.com/en-us/netframework/aa569597.aspx
http://msdn2.microsoft.com/en-us/library/ms241064.aspx

As .NET programs actually execute natively (though JITted), they don't scale automatically between the modes, so you will have to recompile.




Re: Show and Tell do i need to rewrite a 32bit software to work at 64bit OS

Biche

Yes, because 64bit OS support 32Bit, but the inverse is not quite the same




Re: Show and Tell do i need to rewrite a 32bit software to work at 64bit OS

Lau Han Ching

so recompile a 32bit software using a 64Bit VS.NET or a 32Bit VS.NET

can i recompile a 64Bit Software in a 32Bit OS





Re: Show and Tell do i need to rewrite a 32bit software to work at 64bit OS

Biche

Yes yo can, but you cannot run it or debug it in the 32bit OS. You just have to create an x64 configuration in your configuration manager to specify the platform (You have also the chance to create an Itanium configuration also).