command prompt command execution in Qt

Pranit Patil

How command prompt command execution in Qt application

like in case of - gedit my.txt in command prompt my.txt file be open to edit
in case of - mkdir Qt in command prompt i have to execute this command and want to create folder

Thank you in Advance.

Pranit Patil

Any one here ?

JonB

@Pranit-Patil

QProcess::execute("gedit my.txt")

QProcess::execute("mkdir folder")

In practice you should probably use the http://doc.qt.io/qt-5/qprocess.html#execute overload to pass the argument(s) as a QStringList.

P.S.
To create a folder, don't actually use a sub-process of mkdir, use the in-built Qt function for creating a directory.

JonB

@Pranit-Patil said in command prompt command execution in Qt:

Any one here ?

You posted that 9 minutes after your original query. Do you pay for my support, or anyone else's, within 10 minutes? :( Or do you just think it's my/our duty? In which case I'll leave it to others for you from now on...

Pranit Patil

@JonB
i m doing simply like this but not getting o/p

QProcess process;
QString exePath = "C:/Windows/ystem32/cmd.exe";
process.start(exePath);
process.execute("cmd.exe");

JonB

@Pranit-Patil
I gave you the lines to type for your question. If you choose to do something quite different and wrong, that's up to you. Perhaps others will sort you out.

Pranit Patil

@JonB sorry for that

i tried your examples
QProcess::execute("gedit my.txt");
QProcess::execute("mkdir Test");

but not getting any error or any output.

JonB

@Pranit-Patil

Neither command should produce any error or output. Unless you don't even have gedit.... And if you're Windows (your question does not even mention the OS), you may need QProcess::execute("cmd /c mkdir Test");.

Pranit Patil

@JonB Im Developing application in Qt creator 4.6.0 on windows 7 -32bit

#include <QProcess>
#include <QDir>
void Command::on_pushButton_clicked()
{
QProcess process;
QString exePath1 = "D:/Phoenix";
process.start(exePath1);
process.execute("cmd /c mkdir test");
}
not getting any output.

jsulm

@Pranit-Patil "not getting any output." - what "output" do you expect?
Why do you start new process to create a directory? You can do this way faster and easier with Qt (http://doc.qt.io/qt-5/qdir.html#mkdir)
Also this does not make any sense:

QProcess process;
QString exePath1 = "D:/Phoenix";
process.start(exePath1);
process.execute("cmd /c mkdir test");

You can't start a directory as it is not an executable. There is no need to use both start() AND execute().
Did you actually read QProcess documentation?!
It has a nice example:

QString program = "./path/to/Qt/examples/widgets/analogclock";
QStringList arguments;
arguments << "-style" << "fusion";

QProcess *myProcess = new QProcess(parent);
myProcess->start(program, arguments);

JonB

@jsulm
I already pointed all this stuff to OP above.
Additionally, I also deliberately used QProcess::execute() in my examples for him to keep it down to one liners. Each time he has also added an additional QProcess::start(). I suggested he just copy my examples verbatim to avoid this, but we don't seem to be getting anywhere.... I'll leave it to you :)

Pranit Patil

@JonB
Thank you for your reply
Sorry sir i didn't understand what your saying ..?

aim - create folder in my system using commands of cmd prompt in any location through QT application.

Im new in Qt i don't have more knowledge on it plz suggest

Pranit Patil

@JonB @jsulm its working now thank u so much sir.
and sorry that.