Phonon::videoplayer doubt

[vishnu717]

I am creating a phonon video player. In my project , i have to navigate to and from the video player page.
videoplayer is quit working 3 or more times when navigated. But after that, only audio is heared, the video is not displayed...

my doubts,

* How to kill instances of videoplayer when naviagted.(on button click)

i used videoplayer->deletelater(); and videoplayer->~videoplayer(); But the error visual studio just in time debugger displays "new instance is created ".

* how to use inheritance in qt so that i can control videoplayer in all my subclasses

[Santosh Reddy]

hide the videoplayer widget and then can safely call vivideoplayer->deletelater(), if calling from one of the slots of videoplayer, else can call delete videoplayer; directly.

how to use inheritance in qt so that i can control videoplayer in all my subclasses

inherit as if it were just another widget, is there any problem in doing so.

[vishnu717]

i used videoplayer->hide(); in one of my slots
and i also tried with delete videoplayer


But the error visual studio just in time debugger displays "new instance is created ".



the error lines are below

" unhandled win32 exception occured in videoplayer.exe"
Possible debuggers

new instance of visual studio 2008

Do you wantto debug using selected debugger?



here is my code for videoplayer

videoplayer=new Phonon::VideoPlayer(Phonon::VideoCategory,this);
  videoplayer->setGeometry(QRect(190, 85, 547, 364));
 
 
    volumeSlider = new Phonon::VolumeSlider(this);
    volumeSlider->setObjectName(QString::fromUtf8("volumeSlider"));
    volumeSlider->setGeometry(QRect(614, 465, 100, 22));
    volumeSlider->setAudioOutput(videoplayer->audioOutput());
    volumeSlider->setMuteVisible(true);
    volumeSlider->setStyleSheet(" background:none; border:none;");
    volumeSlider->setCursor(Qt::PointingHandCursor);
 
    seeksilder = new Phonon::SeekSlider(this);
    seeksilder->setGeometry(QRect(390, 465, 210, 22));
    seeksilder->setMediaObject(videoplayer->mediaObject());
    seeksilder->setStyleSheet(" background:none; border:none;");
    seeksilder->setCursor(Qt::PointingHandCursor);
 
        videoplayer->load(Phonon::MediaSource ("mybirthdayparty.wmv"));
       videoplayer->play(Phonon::MediaSource("mybirthdayparty.wmv"));

videoplayer=new Phonon::VideoPlayer(Phonon::VideoCategory,this);
  videoplayer->setGeometry(QRect(190, 85, 547, 364));


    volumeSlider = new Phonon::VolumeSlider(this);
    volumeSlider->setObjectName(QString::fromUtf8("volumeSlider"));
    volumeSlider->setGeometry(QRect(614, 465, 100, 22));
    volumeSlider->setAudioOutput(videoplayer->audioOutput());
    volumeSlider->setMuteVisible(true);
    volumeSlider->setStyleSheet(" background:none; border:none;");
    volumeSlider->setCursor(Qt::PointingHandCursor);

    seeksilder = new Phonon::SeekSlider(this);
    seeksilder->setGeometry(QRect(390, 465, 210, 22));
    seeksilder->setMediaObject(videoplayer->mediaObject());
    seeksilder->setStyleSheet(" background:none; border:none;");
    seeksilder->setCursor(Qt::PointingHandCursor);

        videoplayer->load(Phonon::MediaSource ("mybirthdayparty.wmv"));
       videoplayer->play(Phonon::MediaSource("mybirthdayparty.wmv"));

To copy to clipboard, switch view to plain text mode 

This

void Videoplayerclass::on_pic1_clicked()
{
    videoplayer->stop();
	videoplayer->hide();
        videoplayer->deleteLater();
        delete videoplayer;
    Nextwindow *n=new Nextwindow;
 
    n->show();
    this->hide();
}

void Videoplayerclass::on_pic1_clicked()
{
    videoplayer->stop();
	videoplayer->hide();
        videoplayer->deleteLater();
        delete videoplayer;
    Nextwindow *n=new Nextwindow;

    n->show();
    this->hide();
}

To copy to clipboard, switch view to plain text mode 

[Santosh Reddy]

What is the Videoplayerclass ?

void Videoplayerclass::on_pic1_clicked()
{
	videoplayer->stop();
	videoplayer->hide();
	videoplayer->deleteLater(); // this is ok
	//delete videoplayer; //Not required if using videoplayer->deleteLater(), use only one of these
	Nextwindow *n=new Nextwindow; //missing parent is this new top level window?
 
	n->show();
	this->hide();
}

void Videoplayerclass::on_pic1_clicked()
{
	videoplayer->stop();
	videoplayer->hide();
	videoplayer->deleteLater(); // this is ok
	//delete videoplayer; //Not required if using videoplayer->deleteLater(), use only one of these
	Nextwindow *n=new Nextwindow; //missing parent is this new top level window?

	n->show();
	this->hide();
}

To copy to clipboard, switch view to plain text mode 

[vishnu717]

Videoplayerclass is the class in which videoplayer is declared .

actually my classs name is Videoplayerclass

[Santosh Reddy]

You are hiding Videoplayerclass, so how do you get it back ?
Where does control go when Nextwindow is closed / hidden ?

[vishnu717]

Inside the Nextwindow , iam creating another instance of Videoplayerclass inside the button click

void Nextwindow ::on_button_clicked()
{
Videoplayerclass *other = new Videoplayerclass ;
other->show();
this->hide();
}

void Nextwindow ::on_button_clicked()
{
Videoplayerclass *other = new Videoplayerclass ;
other->show();
this->hide();
}

To copy to clipboard, switch view to plain text mode 

[Santosh Reddy]

There is a memory leak, you should be doing like this

void Videoplayerclass::on_pic1_clicked()
{
	videoplayer->stop();
	videoplayer->hide();
	videoplayer->deleteLater();
 
	Nextwindow *n = new Nextwindow;
	n->show();
 
	this->hide();
	this->deleteLater();	
}
 
void Nextwindow::on_button_clicked()
{
	Videoplayerclass *other = new Videoplayerclass;
	other->show();
 
	this->hide();
	this->deleteLater();
}

void Videoplayerclass::on_pic1_clicked()
{
	videoplayer->stop();
	videoplayer->hide();
	videoplayer->deleteLater();
	
	Nextwindow *n = new Nextwindow;
	n->show();
	
	this->hide();
	this->deleteLater();	
}

void Nextwindow::on_button_clicked()
{
	Videoplayerclass *other = new Videoplayerclass;
	other->show();
	
	this->hide();
	this->deleteLater();
}

To copy to clipboard, switch view to plain text mode 

[vishnu717]

Thank u very much Sir


Its working...................

---

Added after 1 50 minutes:

The following code also worked for me by calling destructor

void Videoplayerclass::on_pic1_clicked()
{
	videoplayer->stop();
	videoplayer->hide();
	videoplayer->deleteLater();
 
	Nextwindow *n = new Nextwindow;
	n->show();
 
	this->hide();
	this->~Videoplayerclass();	
}
 
 
void Nextwindow::on_button_clicked()
{
	Videoplayerclass *other = new Videoplayerclass;
	other->show();
 
	this->hide();
	this->~Nextwindow();
}

void Videoplayerclass::on_pic1_clicked()
{
	videoplayer->stop();
	videoplayer->hide();
	videoplayer->deleteLater();
 
	Nextwindow *n = new Nextwindow;
	n->show();
 
	this->hide();
	this->~Videoplayerclass();	
}


void Nextwindow::on_button_clicked()
{
	Videoplayerclass *other = new Videoplayerclass;
	other->show();
 
	this->hide();
	this->~Nextwindow();
}

To copy to clipboard, switch view to plain text mode 

then in the destructor

Videoplayerclass::~Videoplayerclass()
{
    delete ui;
delete videoplayer;
}
Nextwindow::~Nextwindow()
{
    delete ui;
}

Videoplayerclass::~Videoplayerclass()
{
    delete ui;
delete videoplayer;
}
Nextwindow::~Nextwindow()
{
    delete ui;
}

To copy to clipboard, switch view to plain text mode