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I’m using an application that asks for a filename and then writes a large amount of data to that file over the course of a day. <br />
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I would like to intercept this data and send it to another file, as it is written (essentially, creating a up-to-the-minute backup). <br />
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(This is under Windows NT.)<br />
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I've used memory-mapped files (via MFC) to do this kind of thing in the past but, in this case, I don't have access to the source code of the &quot;originating&quot; app. <br />

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I’m using an application that asks for a filename and then writes a large amount of data to that file over the course of a day. 

I would like to intercept this data and send it to another file, as it is written (essentially, creating a up-to-the-minute backup). 

(This is under Windows NT.)

I've used memory-mapped files (via MFC) to do this kind of thing in the past but, in this case, I don't have access to the source code of the "originating" app. 


Catching data written to file by another app

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.