Address passing between two processes

[Wenrich]

Imagine the following situation: I pass the address of an integer varialbe of process A to process B, and have process B to write a value to this address. 1> would an Access Violation exception be DEFINITELY raised? 2> if process B happens to have a non-constant variable (i.e. writable) locating at the same address as the one passed to it, would an AV exception be raised? if not, does that mean process B would simply change its own variable value? Thanks a lot! Wenrich

[Taka Muraoka]

You can't share memory between processes like this. You have to use memory mapped files.

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[Neville Franks]

Sounds like school homework time to me.:omg: Neville Franks, Author of ED for Windows. www.getsoft.com Make money with our new Affilate program

[Stephane Rodriguez]

Anytime you cross the process boundary, you've got to use specialized APIs. If the need is to do so is simple, just use ReadProcessMemory, or WriteProcessMemory which are 2 standards WIN32 API functions.

[Wenrich]

It's not home work, not an assignment. i just want to find out how exactly an AV exception is raised. This question is such one that confused me. Please focus on what would happen under this situation rather than how to do the "passing". Thank you!