Why on earth did you think this had anything at all to do with the C# forum? Please, in the future, don't randomly pick a topic to post in. However, you can download AVG[^] for free - that should take care of it. "WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes. My blog | My articles | MoXAML PowerToys | Onyx

A quicker google search revealed that the compiler comes with a debugger. Use it. "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Most likely cause - you're looking past the bits that contain the image, or you're looking past an individual scanline, not taking the stride value into account. You can read my image processing articles to see how you should iterate over the bits of an image. Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Obviously ptr1 is not at all a pointer to a part of the image, but points somewhere else. If you can show a bit more of the code, it might be possible to say anything more about it. --- single minded; short sighted; long gone;