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Let's say I create a small program or just want to open any kind of file on my computer, but I want to run a program that forces the user to enter a password or something (I already know this part). How does one create the code that would open the file?
what type of file do you want to open? what do you want to do with it once it's open? what have you tried so far?
If links in the FAQ are not enough - you need to be more specific in your question
FAQ > Work with files (C) - Cprogramming.com
FAQ > Accessing a directory and all the files within it - Cprogramming.com
FAQ > Working with files and directories - Cprogramming.com
You understand that a lot of the output file types on your computer are opened by application specific code? That is to say you wont just be able to open a file stream and output a pdf document for example - you need code/ suitable context to view that kind of content, unles you just want to see a load of jumbled symbols.Quote:
open any kind of file on my computer
Would there be a specific code to use for any executable file. I mean this in the sense of something like, Minecraft. Let us say that you want to have a code that when someone clicks a file to play Minecraft, a box is displayed that forces the user to enter a password to be given permission for the file to be opened. What kind of code would be written to load that kind of file?
You would need to write some driver or some DLL that uses "grey" methods for intercepting this kind of thing. I wouldn't recommend it. Why you can't you just use an existing solution out there (ie program)? TrueCrypt?