Download VS2008 project at http://sigma.homeunix.com/SampleInjection.zip
-- or use the code directly from: http://www.rohitab.com/discuss/index.php?showtopic=17456
-- if using the site from the rohitab.com link, make sure to download his 1KB zip file with two functions not posted in his thread.
Any help would be MUCH appreciated. I've spent most of today beating my head against a wall, getting nowhere. I have many years of programming experience, but this is my first attempt at a Windows app, and it's driving me nuts!
Only two changes, both seem necessary to the code on the thread (changes are made in the project downloadable at http://sigma.homeunix.com/SampleInjection.zip
(1) He accidentally (I think) typed taskmgr where he meant notepad. Changed 'hProcess = GetProcessHandle("taskmgr.
exe")' where he meant '...notepad.exe'
(2) FindWindow() at least in VS08 has two paramters, LPCSTR lpClassName and LPCSTR lpWindowName. So, I tried both 'FindWindow("Untitled - Notepad", NULL)' and 'FindWindow(NULL, "Untitled - Notepad")'. I'm virtually certain "Untitled - Notepad" is for lpWindowName, but I tried both just in case.
Oh, I also threw in a MessageBox that states the Dll injection was successful, so there isn't just one upon an error.
The program message box'es success, but the injected dll never seems to execute. Even with a MessageBox as the first instruction in DllMain, nothing seems to happen.
I'm running on Vista, if it matters. Changing the attached project to release form (and moving both solutions over to multi-byte character sets) and copying the .exe and .dll to an XP machine is even worse. The .exe eats up a ton of memory and brings my system to its knees.