Assuming you're speaking specifically for the windows platform (what with 'batch' files), you can't. Batch files are parsed, not compiled, so an image file with batch in it would still be read as an image file. I really can't sum it up more clearly than things just don't work like this. However, assuming you're doing things ethically, you can re-associate, say, a.jpg extension to be opened with the command prompt and put your batch script in a text file with a.jpg extension. Just a final note: Questions like these are often looked poorly upon by the StackOverflow members simply because you're hardly ever trying to achieve something like this with good intentions. Patch Pes 2009 Jelen Super Liga on this page. I won't be the first to flame you, but I definitely won't be the last. There are a number of ways in which a single file can contain two distinct streams of data which are independent of, and don't interfere with, each other.

Of this is how it is possible to append a.zip file to a.jpg file and still have the combined file function as both types of files, depending on what sort of application is opening it. This trick takes advantage of the specific way jpeg and zip files are structured. These sorts of files are akin to. Another common method of embedding unrelated information into a file is, which is the concealment of messages within mundane objects (like an image file. Ik Multimedia Miroslav Philharmonik Rapidshare S more. ) You might also consider using an, though in such a case the batch file would arguably not be embedded in the image. Once you have your batch file embedded, by whatever means, you must then find a way to cause the batch file to be run instead of--or in addition to--whichever image-viewing application the user has configured.

It can be safe to assume that the average user does not expect a file ending in.jpg (for example) to open a cmd.exe window and start executing unknown instructions. Windows Explorer, the application which under most circumstances decides what program to run when a certain file type is double clicked, has sane defaults (i.e. A.jpg file gets opened with an image viewing application) though these can be changed (though users generally don't change these sane defaults to insane customizations like cmd.exe.) The simplest method would be to write your own handler program and cause it to become the default handler for image file types. I believe that all handler applications must be compiled PE application or library files (.exe,.dll,.scr, etc.) so another batch file won't work here. Your custom handler must reverse the embedding to retrieve the embedded batch file and then execute it with cmd.exe.