Checking if a files was modified

[Platini]

There is a file on the hard drive. Let the file name ex.txt.

So how can I check from install script if the C:\ex.txt file was changed or not?

[Anonymous]

On which hard drive? The source computer or destination computer.

And when do you want to see if it was changed? Before, during, or after the installation? Or before building the installation?

[Platini]

The file is on the target computer. And I want to see (before file movement) if that specific file was changed or not.

That file is a simple file . It is not related with my installer package.

[MrTree]

You can get the MD5 signature of the original file and check with

GetFileInfo ( szPathName, FILE_MD5_SIGNATURE, nvResult, svResult ); 

if the file has changed.