Hi,

The application that I'm building so far hasn't been platform-specific (i.e. Win32/Win64), however I am now severely limited by 32-bit memory addressing (due to loading in a huge bitmap at startup, and creating a similarly-sized background bitmap in RAM). I have flicked my project over to x64, however the Jet 4.0 Access connection (whereby at runtime I can fire SQL queries to a local Access database to obtain datasets) no longer works. I have Googled that Ace12 could be a replacement, however I do not have this installed on my system.

My solution needs to be compatible out-of-the-box with x64 platforms, and so what is the best way for me to continue querying my database? I'd rather avoid requiring users to download extra software to get my project working.

I have Googled that Ace12 could be a replacement, however I do not have this installed on my system.

Install it then?

As I said, I'd rather avoid having the end users who download my application have to do the same. I'm looking for a solution (if one exists) that uses existing Win64 data access functionality.

Have you thought about SQLLite? It would just be some dependencies you supply with your package which I'm pretty sure you are already doing with Jet.

If you've not enabled it already, set the /LARGEADDRESSAWARE linker flag, and you'll have 4GB of address space when running on 64-bit Windows in your 32-bit program.

If you're using C# there's some instructions for setting it at: http://stackoverflow.com/questions/2597790/can-i-set-largeaddressaware-from-within-visual-studio