Spy++ - like app

[User 402019]

Hey All, I am in need of some function or library that will allow me to intercept (or spy on) messages in a third-party application (essentially any application) similar to Spy++. I noticed an application posted here called InterSpy, but it uses hooks and you need to add code to your application to spy on messages. Spy++ obviously doesn't require this since you can spy on any application. Does anyone know how Spy++ works? Tom

[Joaquin M Lopez Munoz]

I think global hooks can be used without injecting any code into the target application. SetWindowsHookEx with dwThreadId set to 0 seems to watch on every thread within the desktop, from what the docs say. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

[Jeremy Falcon]

This may help you out... http://www.codeproject.com/system/hooksys.asp[^] Jeremy Falcon

[Beer]

I was thinking the same thing. A global system hook should catch messages without any code in the target application. That's what a global hook does. hey

[Neville Franks]

I thought the source for Spy++ was came with the MS Platform SDK. Aren't there other articles here on CP about hooking into other apps. I'd also be looking on MSDN. I'm sure you'll find articles there on doing this stuff. Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

[Roger Allen]

Take a look at the Winspector program in the free tools section here. Its a home grown version of spy which works a lot better in many ways. The only problem is that the source is not available, but you can get hold of the exe. Roger Allen Sonork 100.10016 Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003