Touch screen

[Tubbs]

We are trying out different sdk's to finally decide what would suit our project the best. I'm now about to try out qt and in my first test I would like to stream a video and make my small test-app work with the touch-screen.

A pc will be connected via hdmi to the touch-screen. The video app (below) is already working and next step would be to try the touch functionality.

Haven't had the chance to try it yet but before I do I wonder if there are any general considerations to make it work.
If I am not mistaken I read that in order to get touch to work I need to connect a usb-cable from the pc to the touch-screen.
Will it most likely work out of the box after that or what steps do I need to consider after connecting the usb between pc and touchscreen? Touchscreen use PCAP Touch technology if that matters (newbie on this matter).

Thanks

=== Video app where I would like the meny buttons etc to work with touch ===
class MainWindow(QMainWindow):

def __init__(self):
    super(MainWindow, self).__init__()

    self.playlist = QMediaPlaylist()
    self.player = QMediaPlayer()
    

    # Setting QToolBar
    toolBar = QToolBar()
    self.addToolBar(toolBar)

    fileMenu = self.menuBar().addMenu("&File")
    openAction = QAction(QIcon.fromTheme("document-open"),
                         "&Open...", self, shortcut=QKeySequence.Open,
                         triggered=self.open)
    fileMenu.addAction(openAction)
    exitAction = QAction(QIcon.fromTheme("application-exit"), "E&xit",
                         self, shortcut="Ctrl+Q", triggered=self.close)
    fileMenu.addAction(exitAction)

    playMenu = self.menuBar().addMenu("&Play")
    playIcon = self.style().standardIcon(QStyle.SP_MediaPlay)
    self.playAction = toolBar.addAction(playIcon, "Play")
    self.playAction.triggered.connect(self.player.play)
    playMenu.addAction(self.playAction)

    previousIcon = self.style().standardIcon(QStyle.SP_MediaSkipBackward)
    self.previousAction = toolBar.addAction(previousIcon, "Previous")
    self.previousAction.triggered.connect(self.previousClicked)
    playMenu.addAction(self.previousAction)

    pauseIcon = self.style().standardIcon(QStyle.SP_MediaPause)
    self.pauseAction = toolBar.addAction(pauseIcon, "Pause")
    self.pauseAction.triggered.connect(self.player.pause)
    playMenu.addAction(self.pauseAction)

    nextIcon = self.style().standardIcon(QStyle.SP_MediaSkipForward)
    self.nextAction = toolBar.addAction(nextIcon, "Next")
    self.nextAction.triggered.connect(self.playlist.next)
    playMenu.addAction(self.nextAction)

    stopIcon = self.style().standardIcon(QStyle.SP_MediaStop)
    self.stopAction = toolBar.addAction(stopIcon, "Stop")
    self.stopAction.triggered.connect(self.player.stop)
    playMenu.addAction(self.stopAction)

    # Setting the QSlider
    self.volSlider = QSlider()
    self.volSlider.setOrientation(Qt.Horizontal)
    self.volSlider.setMinimum(0)
    self.volSlider.setMaximum(100)
    self.volSlider.setFixedWidth(120)
    self.volSlider.setValue(self.player.volume())
    self.volSlider.setTickInterval(10)
    self.volSlider.setTickPosition(QSlider.TicksBelow)
    self.volSlider.setToolTip("Volume")
    self.volSlider.valueChanged.connect(self.player.setVolume)
    toolBar.addWidget(self.volSlider)

    aboutMenu = self.menuBar().addMenu("&About")
    aboutQtAct = QAction("About &Qt", self, triggered=qApp.aboutQt)
    aboutMenu.addAction(aboutQtAct)

    self.videoWidget = QVideoWidget()
    self.setCentralWidget(self.videoWidget)
    self.player.setPlaylist(self.playlist);
    self.player.stateChanged.connect(self.updateButtons)
    self.player.setVideoOutput(self.videoWidget);

    self.updateButtons(self.player.state())

    self.playlist.addMedia(QUrl("https://www.radiantmediaplayer.com/media/bbb-360p.mp4"))
    self.player.play()

def open(self):
    fileDialog = QFileDialog(self)
    supportedMimeTypes = ["video/mp4", "*.*"]
    fileDialog.setMimeTypeFilters(supportedMimeTypes)
    moviesLocation = QStandardPaths.writableLocation(QStandardPaths.MoviesLocation)
    fileDialog.setDirectory(moviesLocation)
    if fileDialog.exec_() == QDialog.Accepted:
        self.playlist.addMedia(fileDialog.selectedUrls()[0])
        self.playlist.addMedia(QUrl("https://www.radiantmediaplayer.com/media/bbb-360p.mp4"))
        self.player.play()

def previousClicked(self):
    # Go to previous track if we are within the first 5 seconds of playback
    # Otherwise, seek to the beginning.
    if self.player.position() <= 5000:
        self.playlist.previous();
    else:
        self.player.setPosition(0);

def updateButtons(self, state):
    mediaCount = self.playlist.mediaCount()
    self.playAction.setEnabled(mediaCount > 0
        and state != QMediaPlayer.PlayingState)
    self.pauseAction.setEnabled(state == QMediaPlayer.PlayingState)
    self.stopAction.setEnabled(state != QMediaPlayer.StoppedState)
    self.previousAction.setEnabled(self.player.position() > 0)
    self.nextAction.setEnabled(mediaCount > 1)

if name == 'main':
app = QApplication(sys.argv)
mainWin = MainWindow()
mainWin.resize(800, 600)
mainWin.show()
sys.exit(app.exec_())