Multiple PID for qprocess function

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0

Im my program, I am using Qprocess function, while executing this program will play the wave signal. But the application is creating two more process PID with same application name & that two process will not be terminating. kindly help me how to solve this problem.

I am using QT 4.8.1 version & Linux 2.6.36.4 armv5tejl GNU/Linux

Kindly attached my code & oputput

**********************************
widget.cpp
**********************************
#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget)
{
    qDebug() << "Application Started";
    ui->setupUi(this);
    setWindowFlags(Qt::FramelessWindowHint);
    playwave = new QProcess();
}

Widget::~Widget()
{
    delete ui;
}

void Widget::keyReleaseEvent(QKeyEvent *k) {
    k->accept();
    int key = k->key();
    qDebug() << "Key Release Event Key = " << key;
    if (key == 16777220) {
        qDebug() << "Play welcome";
        playwave->startDetached("aplay  /opt/WavFiles/English/welcome.wav");
        qDebug() << "Play completed";
    }
}
**********************************
widget.h
**********************************
#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QDebug>
#include <QKeyEvent>

namespace Ui {
    class Widget;
}

class Widget : public QWidget {
    Q_OBJECT
public:
    Widget(QWidget *parent = 0);
    ~Widget();
    QProcess *playwave;
protected:
    void keyReleaseEvent(QKeyEvent *k);
private:
    Ui::Widget *ui;
};

#endif // WIDGET_H
**********************************

Output 
*************
Application Started
Play welcome 
Play completed 
Playing WAVE '/opt/WavFiles/English/welcome.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Stereo

  PID   USER     TIME   COMMAND
  460 root       0:00 ./process -qws
  462 root       0:01 ./process -qws
  463 root       0:00 ./process -qws

asked 39 secs ago

anncyda

1

Multiple PID for qprocess function