Thread: Code works in Win2K but not XP

I recently completed a project that required some advanced programming that I paid a third party programmer to do -
My problem is that the code worked in Win2K but not under Windows XP I cannot contact the programmer but I do have the source code.

Can anyone suggest why c++ wouldn't work in XP? Any suggestions on settings that I need to change?

I have 2 computers running XP and the code works on neither of them.

Compiles and runs in XP. The program puts a .DLL into another program and a message box pops up to say that it is correctly injected - but no data is shown even though Win2K it works perfectly

With limited info you provided it is hard to say. I personally don't see code injection as a good solution.

Could be a depreciated function (works in WIN2K but was removed/modified for XP).
One way top check is to highlight each WIN32 call in the app and press F1 (in MSVC) to bring up the help (select the relevant help page).
Check the 'Requirements' at the bottom of the page (which lists the OSs the function works on).

If this is a large app I would add logging/messageboxes to show the progress of the app, moving them until they do not show up because the app has failed (ie narrow down the amount of code the error is in so you ave less to search).


Could also be a difference in 32/64bit OSs but I think you might have mentioned that.

I have worked out that the program works but the program it is hooking out of is having it's memory protected by windows XP, any ideas how to disable this protection?

I wanted to edit my previous post but it wouldn't let me

I have put two other versions of windows XP on this computer but neither of them work; I then put windows 7 on the computer and it didn't work either. Could their be something in the bios that is stopping the memory being read?
Sorry if it's a newbie question but I'm not a programmer.

What program are you hooking?

Why do you have to use hooking (and not some other form of IPC)?