Hide/Show a widget

[Roy44]

You can set your push button checkable an d connect clicked(bool) with setVisible(bool) of your widget.

[p3c0]

@abhay To add to @Roy44 's answer you can just connect button's clicked signal to hide and show slots.

[abhay]

@Roy44 I am new to Qt development.I did exactly what you told to do.But,I'm getting errors```
/SimplePlayer.cpp:105: error: expected primary-expression before 'bool'
setVisible(bool);
^

Can you tell me why am I getting this errors? and also I am having a groupbox not widget(2nd widget).Is it possible to hide that groupbox?

[mrjj]

Hi
its wants true or false
setVisible(true);
or
setVisible(false);

[mrjj]

@abhay
Yes also a GroupBox can be hidden. ( its also a widget)

[Roy44]

I mean :

myButton->seCheckable(true);
QObject::connect(myButton, SIGNAL(clicked(bool)), myWidget, SLOT(setVisible(bool)));

the visibility of your widget depends on button state (checked or not)

[abhay]

@Roy44 after changing myButton to checkBox and mywidget to groupBox,I am getting errors like checkBox and groupBox were not declared in this scope.Am I doing something wrong?

[Roy44]

can you show your code ?

[abhay]

@Roy44

#include <QFileDialog>
#include <QInputDialog>

#include <VLCQtCore/Common.h>
#include <VLCQtCore/Instance.h>
#include <VLCQtCore/Media.h>
#include <VLCQtCore/MediaPlayer.h>

//#include "EqualizerDialog.h"

#include "SimplePlayer.h"
#include "ui_SimplePlayer.h"

SimplePlayer::SimplePlayer(QWidget *parent)
    : QMainWindow(parent),
      ui(new Ui::SimplePlayer),
      _media(0)
//      _equalizerDialog(new EqualizerDialog(this))
{
    ui->setupUi(this);

    _instance = new VlcInstance(VlcCommon::args(), this);
    _player = new VlcMediaPlayer(_instance);
    _player->setVideoWidget(ui->video);
//    _equalizerDialog->setMediaPlayer(_player);

    ui->video->setMediaPlayer(_player);
    ui->volume->setMediaPlayer(_player);
    ui->volume->setVolume(50);
//    ui->seek->setMediaPlayer(_player);

    connect(ui->actionOpenLocal, &QAction::triggered, this, &SimplePlayer::openLocal);
//    connect(ui->actionOpenUrl, &QAction::triggered, this, &SimplePlayer::openUrl);
    connect(ui->actionPause, &QAction::toggled, _player, &VlcMediaPlayer::togglePause);
    connect(ui->actionStop, &QAction::triggered, _player, &VlcMediaPlayer::stop);
    connect(ui->openLocal, &QPushButton::clicked, this, &SimplePlayer::openLocal);
//    connect(ui->openUrl, &QPushButton::clicked, this, &SimplePlayer::openUrl);
    connect(ui->pause, &QPushButton::toggled, ui->actionPause, &QAction::toggle);
    connect(ui->stop, &QPushButton::clicked, _player, &VlcMediaPlayer::stop);
//    connect(ui->equalizer, &QPushButton::clicked, _equalizerDialog, &EqualizerDialog::show);
}

SimplePlayer::~SimplePlayer()
{
    delete _player;
    delete _media;
    delete _instance;
    delete ui;
}

void SimplePlayer::openLocal()
{
    QString file =
            QFileDialog::getOpenFileName(this, tr("Open file"),
                                         QDir::homePath(),
                                         tr("Multimedia files(*)"));

    if (file.isEmpty())
        return;

    _media = new VlcMedia(file, true, _instance);

    _player->open(_media);
}

void VlcWidgetVolumeSlider::mousePressEvent(QMouseEvent *event)
{
   // ...
    QSlider::mousePressEvent(event);
   // ...
}
void VlcWidgetVolumeSlider::mouseReleaseEvent(QMouseEvent *event)
{
    // ...
    QSlider::mouseReleaseEvent(event);
   // ...
}


void SimplePlayer::on_pushButton_clicked()
{

   isFullScreen() ? showNormal() : showFullScreen();
}


void SimplePlayer::on_checkBox_clicked(bool checked)
{
    checkBox->setCheckable(true);
    QObject::connect(checkBox, SIGNAL(clicked(bool)), groupBox, SLOT(setVisible(bool)));
}

This is my simpleplayer.cpp code

[Roy44]

Where do you create your checkbox and your group box ?
Are they created with designer ? in this case add ui-> brefore.

[abhay]

@Roy44 Yeah..That worked.Thanks! But how to expand the 1st widget automatically when the checkbox is not selected?(I mean 1st widget automatically occupies the 2nd widgets place)

[p3c0]

@abhay The easiest way is to add them in layouts.

[abhay]

@p3c0 Thanks!