qt why qlineedit hidden after resize?

[deynekoaa]

Why qlineedit in qlistwidgetitem hidden after resize?

main.cpp
#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}

mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QListWidget>
#include <QLineEdit>
#include <QLabel>
#include <QPushButton>
#include <QHBoxLayout>
#include <QTreeWidgetItem>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
    void makeMagic();
    void addNewElement(QString name);

    QHBoxLayout* qhbl;
    QListWidget* qlw;
    QLineEdit* qle;

private slots:
    //void test(QListWidgetItem *item);
    void showContextMenuForWidget(const QPoint &pos);
    //void Validate(QListWidgetItem*);
    void addNewElement();
    void editElement();
    void deleteElement();
    void qleTextChanged(QString);




private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H


mainwindow.cpp
#define _old
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QLabel>
#include <QPushButton>
#include <QAction>


MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    makeMagic();
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::makeMagic()
{
    qhbl = new QHBoxLayout();
    qlw = new QListWidget();
    qlw->setViewMode(QListWidget::IconMode);
    //qlw->setFlow(QListWidget::LeftToRight);
    //qlw->setWrapping(true);
    qlw->setMovement(QListWidget::Static);
    //qlw->setGridSize(QSize(80,80));
    qlw->setResizeMode(QListWidget::Adjust);
    //border-style: solid;
    QString qstrStyle = "QListWidget::item { ";
    qstrStyle += "border-radius: 10px;";
    qstrStyle += "margin: 1px;";
    qstrStyle += "min-width: 10em; min-height: 0.75em; padding: 1px;";
    qstrStyle += "background-color: rgb(187,204,241);" ;
    qstrStyle += "border-style: outset; border-width:1px; border-color:black;";
    qstrStyle += "}";
    qstrStyle += "QListWidget::item::selected {";
    qstrStyle += "background-color: rgb(136, 158, 207);";
    qstrStyle += "border-style: inset; color: white; border-width:1px;";
    qstrStyle += "border-color:black; ";
    qstrStyle += "}";
    qlw->setStyleSheet(qstrStyle);


    //qlw->setStyleSheet(" QListWidget {background-color: rgb(63, 63, 63);} ");

    connect(qlw, SIGNAL(customContextMenuRequested(const QPoint &)),
             SLOT(showContextMenuForWidget(const QPoint &)));
    qlw->setContextMenuPolicy(Qt::CustomContextMenu);


    addNewElement("test111111111");
    addNewElement("test222222222");
    addNewElement("test3333");
    addNewElement("test4444");

#ifdef good
    QListWidgetItem* qlwiItem = new QListWidgetItem();
    qlwiItem->setTextAlignment(Qt::AlignHCenter);
    qle = new QLineEdit();
    qle->setText("input");
    connect(qle, SIGNAL(returnPressed()), this, SLOT(addNewElement()));
    connect(qle, SIGNAL(textChanged(QString)), this, SLOT(qleTextChanged(QString)));
    //qle->setFixedWidth(70);
    qle->resize(qlwiItem->sizeHint().width(), qlwiItem->sizeHint().height());
    //qle->setMinimumWidth(qlwiItem->sizeHint().width()-10);
    //qle->setMaximumWidth(80);
    //qle->setAlignment(Qt::AlignBaseline);
#endif


    QListWidgetItem* qlwiItem = new QListWidgetItem();
    qlwiItem->setTextAlignment(Qt::AlignHCenter);
    qle = new QLineEdit();
    qle->setText("input");
    connect(qle, SIGNAL(returnPressed()), this, SLOT(addNewElement()));
    connect(qle, SIGNAL(textChanged(QString)), this, SLOT(qleTextChanged(QString)));
    //qle->setFixedWidth(70);
    //qle->resize(qlwiItem->sizeHint().width(), qlwiItem->sizeHint().height());
    qle->setMinimumWidth(qlwiItem->sizeHint().width()-10);
    //qle->setMaximumWidth(80);
    //qle->setAlignment(Qt::AlignBaseline);

    qlw->addItem(qlwiItem);
    qlw->setItemWidget(qlwiItem, qle);




#ifdef _old
    qhbl->addWidget(qlw);
#else
    qhbl->addWidget(new QPushButton(tr("Short")));
    qhbl->addWidget(new QPushButton(tr("Longer")));
    qhbl->addWidget(new QPushButton(tr("Different text")));
    qhbl->addWidget(new QPushButton(tr("More text")));
    qhbl->addWidget(new QPushButton(tr("Even longer button text")));
#endif
    ui->centralWidget->setLayout(qhbl);
}

void MainWindow::qleTextChanged(QString)
{
//    QString text = qle->text();
//    QFontMetrics fm = qle->fontMetrics();
//    int w = fm.boundingRect(text).width();
//    qle->resize(w, qle->height());

}


void MainWindow::addNewElement(QString name)
{
    QListWidgetItem* qlwiItem = new QListWidgetItem();
    //qlwiItem->setBackgroundColor(Qt::yellow);
    QStringList qslname = name.split(";");
    for(int i=0; i<qslname.count(); i++)
    {
        qlwiItem->setText(qslname.at(i));
        qlwiItem->setFlags(qlwiItem->flags () | Qt::ItemIsEditable);
        qlw->addItem(qlwiItem);
    }
}


void MainWindow::showContextMenuForWidget(const QPoint &pos)
{
    QListWidgetItem* widget = qlw->itemAt(pos);
    if(widget != 0)
    {
        if(widget == qlw->item(qlw->count()-1))
            return;

        QMenu contextMenu("Контекстное меню", this);

        QAction* actChange = contextMenu.addAction(QString::fromLocal8Bit("Изменить"));
        connect(actChange,SIGNAL(triggered()),this,SLOT(editElement()));

        QAction* actDelete = contextMenu.addAction(QString::fromLocal8Bit("Удалить"));
        connect(actDelete,SIGNAL(triggered()),this,SLOT(deleteElement()));

        contextMenu.exec(mapToGlobal(pos));
    }
}

void MainWindow::addNewElement()
{
    QString newElement = qle->text();
    QStringList qslNewElement = newElement.split(";");
    for(int i=0; i<qslNewElement.count(); i++)
    {
        QListWidgetItem* qlwiItem = new QListWidgetItem();
        QString name = qslNewElement.at(i).simplified();
        if(name.isEmpty())
            continue;
        qlwiItem->setText(name);
        qlwiItem->setFlags(qlwiItem->flags () | Qt::ItemIsEditable);
        qlw->insertItem(qlw->count()-1, qlwiItem);
    }
    qle->clear();
    qlw->scrollToBottom();
}

void MainWindow::editElement()
{
    if (qlw->selectedItems().count() < 1)
        return;
    if(qlw->selectedItems().at(0) == qlw->item(qlw->count()-1))
        return;
    emit qlw->editItem(qlw->selectedItems().at(0));
}

void MainWindow::deleteElement()
{
    if (qlw->selectedItems().count() < 1)
        return;
    if(qlw->selectedItems().at(0) == qlw->item(qlw->count()-1))
        return;
    delete(qlw->selectedItems().at(0));
}

[edit: added missing coding tags: three backstick ``` before and after SGaist]

[SGaist]

Hi,

Just a wild guess but you might be resizing it to 0