exe file replace using QProcess

[mrjj]

@4j1th
Hi
just tested in win 7.
it wont allow to delete running exe.

Linux will, i know. but Windows wont allow.

[4j1th]

@mrjj can you delete any other file, I can't do it either

[mrjj]

@4j1th
hi

 QProcess process;
    process.start("cmd", QStringList() <<"/C" << "del" << "e:/test.txt " );

this delete the file i put on e:\

[4j1th]

@mrjj @kshegunov

you're right, can't replace running exe, so I think the best way to update is write an another app for updation right?

[mrjj]

@4j1th
Well even another program cannot override the exe, so the updater must
close the running version.

[4j1th]

@mrjj Thank you for your help, this is the second time you help me like a guru

Thank you

[mrjj]

@4j1th
You are most welcome :)
The exe you are trying to update. is it your own program?

[4j1th]

@mrjj yes

[mrjj]

@4j1th
Ok. that makes it easier to get it to close. :)
Will user check for update from inside the program or how will that happen?
(if i may ask)

[4j1th]

@mrjj When the app starts it checks for update if available-> ask for update permission(user) -> invoke the updater using QProcess -> as you said close the app -> download and replace the exe

[4j1th]

@mrjj Qt installer framework can replace a running exe and dll I don't know how!

[mrjj]

@4j1th said:
well on windows its not so hard using windows API.

[Rondog]

There is a link to an article that talks about this problem and possible solutions. http://www.catch22.net/tuts/self-deleting-executables on Windows.

I, personally, would try to keep this sane. A separate updating utility that closes the original program and replaces or removes whatever should be replaced or removed is probably the safest thing to do.

[kshegunov]

@Rondog

I, personally, would try to keep this sane. A separate updating utility that closes the original program and replaces or removes whatever should be replaced or removed is probably the safest thing to do.

I completely agree!

[SGaist]

Hi,

One possibility would be to use the Qt Installer Framework that, AFAIK, has an updating functionality

[mrjj]

;)
Do not worry
he is not planning on overwriting the exe from WITHIN the exe :)
Even @Rondogs link is pretty interesting,
it does indeed smell of a complex way of shooting your foot off :)

[4j1th]

@SGaist
tried qt installer framework but I don't think it can help the auto updating, launch a topic on this please see this link

https://forum.qt.io/topic/61811/qt-installer-framework-auto-update