[Solved]QByteArray to QString.

bmps

I have a Widget project with a Push Button and a Text Edit wherein when the button is clicked the QProcess executes the command and gives the output.
This is the code i have written. I can see the QProcess executing the command and fetching the details in the Application Output Window. I want to fetch this Output as a String and see that output in the Text Edit.
@
QProcess proc;
proc.execute("uname -s");
QByteArray result = proc.readAllStandardOutput();
QString command(result); //to convert byte array to string

QPushButton *KernelName= new QPushButton();
ui->textEdit->setText(command);
@
Let me know where am going wrong as when i run it the output is not seen in the textEdit.

[edit: please add @ code tags, Eddy]

leon.anavi

To constructs a string initialized with a byte array content just use:
@QString::QString ( const QByteArray & ba ) @
For more info please "click here":http://doc.qt.nokia.com/latest/qstring.html#QString-9

Please make sure that your issue is not related to something else in your source code.

goetz

The problem is not with the byte array or the QString, but with your process. "QProcess::execute() ":http://doc.qt.nokia.com/4.7/qprocess.html#execute-2 is a static method. It does not need an object to be called, and - more important for your case - it does not hand back the standard output and and standard error are redirected to the respective channels of your program. You cannot catch the result.

A solution to your problem would be this snippet:

@
QProcess proc;
proc.start("uname -s"); // start returns immediatly
proc.waitForFinished(-1); // wait until the process has finished
QByteArray result = proc.readAllStandardOutput();
QString command(result); //to convert byte array to string
@

bmps

Thanks Mr.Volker that worked. So silly of me.

goetz

No problem. It's easy to miss and the the code completion might be another source of problem in that case :-)

Glad to know it works now. If you want, mark the topic as solved by prepending [Solved] to the title (just hit the edit link right to the very first post of this thread).

Tyagiait

Hello,

My problem question is same but i want to show the output in continous manner.
Like if i m installing a software then first line of process shown in terminal to be displayed in textbox and then the second one while the process still running.

how i m gona achieve this...
help me out in this.....
Thanks......

SGaist

Hi and welcome to DevNet,

Please, start a new thread describing your problem rather than posting in an old solved one (You can mention this thread in your new post though)

Tyagiait

thank u......