[Solved] Problem Regarding Data reading from QProcess::readAll

Swinetha

hai,

In my application, i am using combo box. In that combo box 8 channels will be their. So when we select a channel1 Qprocess will run C executable file and i will read data from that process.
I am using this type of code for running the C code after selecting a channel.
@
program = "/home/Testing/test";
arguments<<"0xff"<<"0xbb"<<"0xcc"<<"0xdd"<<"0xaa"<<"0xcd"<<"0xab"<<"0xdf";

    process =new QProcess(this);
    process->setReadChannel(QProcess::StandardOutput);
    process->start(program,arguments);
    process->waitForFinished();
   QByteArray  b1=process->readAllStandardOutput();
    ui1->textEdit->clear();
    QString command(b1);
    ui1->textEdit->setText(command);
    process->closeReadChannel(QProcess::StandardOutput);
    process->kill();
    b1.clear();

@
My problem is when i select channel1, channel 1 data is displayed in text edit.

If i select channel 2, then both channel 1 and channel 2 is displaying. i.e.,

QByteArray b1=process->readAllStandardOutput(); this function is reading both previous and present channel data.

But i need only selected channel data. So how can i clear the previous channel data.

Its very important to me. So please give your valuable suggestions for this post.

Thank you.....

Swinetha

my problem was solved.....
I said,

bq. If i select channel 2, then both channel 1 and channel 2 is displaying. i.e.,

QByteArray b1=process->readAllStandardOutput(); this function is reading both previous and present channel data.

its not reading both previous and present data.

the problem was I declare arguments as globally so it is passing the previous arguments only thats why i am getting previous data If I declare the arguments as local variable it's working fine