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Thread: Delete widgets from QVBoxLayout

  1. #1
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    Default Delete widgets from QVBoxLayout

    Hi,
    I am creating a QWidget in the constructor and adding that QWidget to QScrollArea. When the verticall scroll bar reaches to the maximum value, i am creating another QWidget and adding to the existing widget. All these are in vertical layout.

    I want to delete all the widgets in the vertical layout created dynamically when i press a button.

    My code :

    writingArea is a another class.
    writingArea::writingArea(QWidget *parent) :
    QWidget(parent){ //constructor of writingArea class//}

    //Declaration
    MainWindow.h

    writingArea *writewidget;
    QVBoxLayout *vwritelayout;

    //Constructor of MainWindow.h

    writewidget = new writingArea;
    writewidget->setMinimumSize(1000,1300);
    vwritelayout->addWidget(writewidget);
    connect(ui->answerarea_scrollArea->verticalScrollBar(),SIGNAL(actionTriggered(int)), this,SLOT(add_write_area()));
    connect(ui->pushbutton,SIGNAL(clicked()),this,SLOT(delete_wid gets()));

    //Functions
    void MainWindow::add_write_area()
    {


    int write_sliderval = ui->answerarea_scrollArea->verticalScrollBar()->maximum();
    int write_sliderpos=ui->answerarea_scrollArea->verticalScrollBar()->sliderPosition();

    if(write_sliderval == write_sliderpos)
    {
    writewidget = new writingArea;
    writewidget->setMinimumSize(1000,1300);
    vwritelayout->addWidget(writewidget);
    }
    }
    void Mainwindow::delete_widgets()
    {

    //Here I want to delete the widgets created in veritelayout.

    }

    Please help me....

  2. #2
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    Default Re: Delete widgets from QVBoxLayout

    Qt Code:
    1. while(!vertilayout->isEmpty()) {
    2. delete vertilayout->takeAt(0);
    3. }
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  3. #3
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    Default Re: Delete widgets from QVBoxLayout

    Its not coming inside the while loop

  4. #4
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    Default Re: Delete widgets from QVBoxLayout

    Apparently you have nothing in the layout.
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  5. #5
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    Default Re: Delete widgets from QVBoxLayout

    Then the layout contains no items and you don't need to do anything.

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