FileWrite and delete char

[trynhyty]

Hi everybody, new here.

I'm messing around with AutoIT since a few days. 

I'm actually doing some experiment on my computer, and want to do a simple textbox on my desk, and when I type some things like "chrome" then click OK or input Enter, it launch chrome.exe

Anyway, I'm storing a historic of my inputs in a txt file. And if I push my BackSpace button, I'd like to make my code delete the last character of the txt file instead of FileWrite ($historic, 'BACKSPACE') .. 

 Is there a special character that can delete my last char in the txt file ? I remember doing domething like that in C but it was years ago and I was beginning... 

Thanks for your help !

[MikahS]

This should help you get started: StringTrimRight

[trynhyty]

This should help you get started: StringTrimRight

Thanks MikahS, 

So, if I understand, I have to read the whole .txt file as a string, remove 1 char from this string, and write the result in the .txt file ? 

[MikahS]

There are many ways you can go about doing this. I like using the _FileReadToArray, depending on if you have a way to split the lines (otherwise just do FileOpen w/ overwrite, FileRead, StringTrimRight, FileWrite, FileClose), use the count, which would be under index 0, and trim the string as you see fit, then write the array back using _FileWriteFromArray with FileOpen in overwrite mode. 

Let me know if you have any questions, as there is multiple ways of going about achieving what you would like.

Edited August 18, 2015 by MikahS