How to open console window via QProcess?

Kien Bui

I init a QProcess to open a console window, but no window is show.

QProcess *process = new QProcess();
process->start("adb devices");

SGaist

Hi and welcome to devnet,

There's no reason for any console window to be shown when executing such a command.

If you want to parse the output of your process then you can read what was sent to stdout once your command has finished.

Kien Bui

To work with Android device, I need open a console window. I want to open a console window to continue text command
Eg: "adb -s device shell" to open shell access android device

Kien Bui

I found a keyword: "CREATE_NEW_CONSOLE" but I don't know to use it

mrjj

Hi,
What you want is called a interactive shell/prompt
This is sample for Windows

QDetachableProcess process;
    QString program = "cmd.exe";
    QStringList arguments = QStringList() << "/K" << "C:\\Program Files\\Inkscape\\python.exe";
    process.setCreateProcessArgumentsModifier(
                [](QProcess::CreateProcessArguments *args) {
        args->flags |= CREATE_NEW_CONSOLE;
        args->startupInfo->dwFlags &=~ STARTF_USESTDHANDLES;
    });
    process.start(program, arguments);
    process.detach();
    }

starts python and let u type commands in it.

JonB

@mrjj
Yes, but the OP wants it for Android! :)

mrjj

@JonB
Oh, thx. i missed that little word.
No idea how to get interactive shell on phone.
if even allowed.

mnbv

Wanted to do something similar and found this while checking if QProcess could handle it conveniently (it can't, as seen above).

Just use std::system. Doing it with QProcess just makes extra work. E.g. for the OP:

#include <cstdlib>

std::system("adb -s device shell");

If you want to just open a command shell, the command depends on the platform but it'd be something like:

std::system("cmd"); // windows
std::system("/bin/bash"); // linux, maybe osx? 
// etc...

For that Python example above:

std::system("\"C:\\Program Files\\Inkscape\\python.exe\"");

// or if necessary:
std::system("cmd /K \"C:\\Program Files\\Inkscape\\python.exe\"");

// or if python is in the path, just:
std::system("python");

PS This whole thread is a bit silly. The OP didn't want to open a shell on a phone, and there's definitely good reasons to start adb in a console window (it's a console-based interactive shell for debugging an attached Android device). The OP wanted to start it in a console window so they could continue to use it in said console window after starting it.

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