在主窗口小部件(控制台)QT

时间:2016-01-12 04:59:23

标签: c++ qt widget

5使用Macos,现在我有一个中央小部件作为控制台屏幕。这显示了来自我的串口功能的输出。

在下面,我想添加一些其他小部件来做其他事情,比如按钮,滑块或液晶屏。我想知道如何做到这一点。

我目前拥有的代码:

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    //******* Set up
    ui->setupUi(this);

    console = new Console;
    console->setEnabled(false);
    setCentralWidget(console);

    //create serialport object
    serial = new QSerialPort(this);

    //create settings object
    settings = new SettingsDialog;

    ui->actionConnect->setEnabled(true);
    ui->actionDisconnect->setEnabled(false);
    ui->actionQuit->setEnabled(true);
    ui->actionConfigure->setEnabled(true);

    initActionsConnections();

    /************** Connection Events ***********************/
    connect(serial, SIGNAL(error(QSerialPort::SerialPortError)), this,
            SLOT(handleError(QSerialPort::SerialPortError)));

    connect(serial, SIGNAL(readyRead()), this, SLOT(readData()));

    connect(console, SIGNAL(getData(QByteArray)), this, SLOT(writeData(QByteArray)));
}

但是,我希望这些小部件与控制台屏幕分开,控制台屏幕自己显示一些输出。所以我想添加以下小部件:

/************** Adding Widgets *********************/
//creation and attribution of slider
slider = new QSlider();
slider->resize(255, 20);
slider->setOrientation(Qt::Horizontal);
slider->setRange(0, 255); //0-255 is range we can read

//creation and attribution of the lcd
lcd = new QLCDNumber();
lcd->setSegmentStyle(QLCDNumber::Flat);
lcd->resize(255, 50);

//layout with slider and lcd
main_layout = new QVBoxLayout();
main_layout->addWidget(slider);
main_layout->addWidget(lcd);

//***********some way add this main_layout underneath the console **********/

1 个答案:

答案 0 :(得分:1)

我建议您将centralWidget布局设置为QVBoxLayout,并将您的项目添加到centralWidget->layout()

`MainWindow'中的代码shoudl有点像下面的变化。

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    ui->centralWidget->setLayout(new QVBoxLayout);

    console = new Console;
    console->setEnabled(false);
    // Add this line instead of setting your console as central widget.
    ui->centralWidget->layout()->addWidget(Console);

    .... //Continue with rest of the things
}

添加额外小部件的代码应该如下所示。

/************** Adding Widgets *********************/
//creation and attribution of slider
slider = new QSlider(this);
slider->resize(255, 20);
slider->setOrientation(Qt::Horizontal);
slider->setRange(0, 255); //0-255 is range we can read

//creation and attribution of the lcd
lcd = new QLCDNumber(this);
lcd->setSegmentStyle(QLCDNumber::Flat);
lcd->resize(255, 50);

//Adding the widgets created to the main layout.
ui->centralWidget->layout()->addWidget(slider);
ui->centralWidget->layout()->addWidget(lcd);

希望这就是你要找的东西。