Not to show console window when using system()

ynatynat

I created app which uses system().
the app is for windows, complier is mingw.
I found extra console windows appear for a moment when the app uses system().
How to prevent to show extra console windows?

ynatynat

@Christian-Ehrlicher
Thank you. Isee.
I found how to copy directory to another directory (including all files).
https://forum.qt.io/topic/10263/solved-copy-all-files-in-folder-to-another-directory/5

sierdzio

@ynatynat use qDebug(), printf(), QProcess etc. or some winapi methods. It's hard to say exactly what you need when we don't know what you want to achieve. What do you use system() for?

ynatynat

@sierdzio
Thank you for reply.
use system for:
system( "cp -pR srcFile dstFile" );
sytem( applicationName +"&")

*This app was originally created for Ubuntu, but was ported to Windows.

sierdzio

OK then:

system( "cp -pR srcFile dstFile" );

Here you can simply use QFile::copy().

sytem( applicationName +"&")

Here you can use QProcess::startDetached().

ynatynat

@sierdzio
Thank you for each replacement functions.

ynatynat

@sierdzio
It seems not easy to replace system(cp ...) to QFile::copy() for windows.
It's fail to copy file or directory to directory under C:.

sierdzio

@ynatynat Please show your code, it's hard to help otherwise.

Qt can definitely handle Windows paths.

Christian Ehrlicher

@sierdzio looks like he wants to copy a directory.

ynatynat

@sierdzio
@Christian-Ehrlicher

QString src = "c:\Users\a\data\"
std::string dst = "C:/Users/a/Documents/data_2023-11-15"

QFile::copy( src , QString::fromStdString(dst));

//---------
[C:/Users/a/Documents/data_2023-11-15 ] is not found after that.
"src" is a directory, which has some files.
"dst" is a new directory.

Christian Ehrlicher

As you can see in the documentation and also from the word 'file' you can also copy files with this command. You have to write a directory copy by yourself. Use the search function as you are not the first who wants to copy a directory.

ynatynat

@Christian-Ehrlicher
Thank you. Isee.
I found how to copy directory to another directory (including all files).
https://forum.qt.io/topic/10263/solved-copy-all-files-in-folder-to-another-directory/5

JonB

@ynatynat
Be aware that the post you link to actually removes a file hierarchy! To copy you will need to write something which is called recursively for each child directory you want to copy. There may be alternative posts which are more recent than that one.

ynatynat

@JonB
Thank you for advice! I'll search.

jeremy_k

C++17's std::filesystem::copy has a recursive option.