GUI window

**bmn** · 6th May 2008, 07:54

hi all

I am creating a GUI window with two Q3Group Boxes. I was able to create the group boxes but unable to display them on the main widget.
I am sending my code please look into it & suggest me the necessary modifications.

Qt Code:

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#include <QtGui>
#include <Qt3Support/q3groupbox.h>
#include "new.h"
 
client_window::client_window()
{
    createButtonsLayout();
    newdisplay();
    //createButtonsLayout();
    /*maingrid = new QGridLayout;
    maingrid->addWidget(display,0,0);
    maingrid->addWidget(start,1,0);
    maingrid->addWidget(stop,2,0);*/
    setLayout(maingrid);
    setWindowTitle(tr("Client GUI"));
    resize(640,480);
}        
 
void client_window::createdisplay()
{
    QString format = "png";
    QString initialPath = QDir::currentPath() + tr("/untitled.") + format;
    QString fileName = QFileDialog::getOpenFileName(this, tr("Open"),
            initialPath,tr("%1 Files (*.%2);;All Files (*)")
            .arg(format.toUpper()).arg(format));
    if (!fileName.isEmpty())
    {
        QPixmap p(fileName); 
        //display->setMovie(p);
        display->resize(640,480); 
        p=p.scaled ( display->width(),display->height(), Qt::IgnoreAspectRatio, 
                                    Qt::SmoothTransformation );  
        display->setPixmap(p);
    }
}
 
void client_window::createButtonsLayout()
{
    start  = createButton(tr("Start"),this, SLOT(createdisplay()));
    stop = createButton(tr("Stop"), this, SLOT(close()));
}
 
QPushButton *client_window::createButton(const QString &text, QWidget *receiver,
        const char *member)
{
    QPushButton *button = new QPushButton(text);
    button->connect(button, SIGNAL(clicked()), receiver, member);
    return button;
}
 
void client_window::newdisplay()
{
    //maingrid = new QGridLayout();
    display = new QLabel;
    display->setObjectName(QString::fromUtf8("Image"));
    display->resize(640,480);
 
    options = new Q3GroupBox;
    options->setObjectName(QString::fromUtf8("options"));
    options->setGeometry(QRect(6, 380, 264, 93));
    QFont font;
    font.setPointSize(11);
    options->setFont(font);
    options->setColumnLayout(0, Qt::Vertical);
    maingrid = new QGridLayout();
    QBoxLayout *boxlayout = qobject_cast<QBoxLayout *>(options->layout());
    if (boxlayout)
        boxlayout->addLayout(maingrid);
    maingrid->setAlignment(Qt::AlignTop);
    maingrid->setObjectName(QString::fromUtf8("maingrid"));
    gridLayout1= new QGridLayout();
    gridLayout1->setObjectName(QString::fromUtf8("gridLayout1"));
    label = new QLabel(options);
    label->setObjectName(QString::fromUtf8("label"));
    label->setFont(font);
    label->setText("&Port Address");
 
 
    gridLayout1->addWidget(label, 0, 0, 1, 1);
 
    lineEdit = new QLineEdit(options);
    lineEdit->setObjectName(QString::fromUtf8("lineEdit"));
    lineEdit->setFont(font);
 
 
    gridLayout1->addWidget(lineEdit, 0, 1, 1, 2);
 
    spacerItem = new QSpacerItem(53, 20, QSizePolicy::Expanding,   
                                       QSizePolicy::Minimum);
    gridLayout1->addItem(spacerItem, 1, 0, 1, 1);
 
    //start = new QPushButton(options);
    //start->setObjectName(QString::fromUtf8("Start"));
    //start->setFont(font);
    //start->setText("Start");
    //createButtonsLayout();
 
    gridLayout1->addWidget(start, 1, 1, 1, 1);
 
    //stop = new QPushButton(options);
    //stop->setObjectName(QString::fromUtf8("stop"));
    //stop->setFont(font);
    //stop->setText("Stop");
 
    gridLayout1->addWidget(stop, 1, 2, 1, 1);
 
    //maingrid = new QGridLayout();
    maingrid->addLayout(gridLayout1, 0, 0, 1, 1);
    maingrid->addWidget(display,2,0,1,1);
 
    logmessages = new Q3GroupBox;
    logmessages->setObjectName(QString::fromUtf8("logmessages"));
    logmessages->setGeometry(QRect(278, 380, 346, 92));
    logmessages->setFont(font);
    logmessages->setColumnLayout(0, Qt::Vertical);
    gridLayout2 = new QGridLayout();
    QBoxLayout *boxlayout1 = qobject_cast<QBoxLayout *>(logmessages->layout());
 
    if (boxlayout1)
        boxlayout1->addLayout(gridLayout2);
    gridLayout2->setAlignment(Qt::AlignTop);
    gridLayout2->setObjectName(QString::fromUtf8("gridLayout2"));
    //maingrid->addLayout(gridLayout2,0,1,1,1);
    //graphicsView = new QGraphicsView(centralwidget);
    //graphicsView->setObjectName(QString::fromUtf8("graphicsView"));
    //graphicsView->setGeometry(QRect(5, 9, 620, 369));
    //graphicsView->setAutoFillBackground(true);
    //MainWindow->setCentralWidget(centralwidget);
    label->setBuddy(lineEdit);
}

#include <QtGui>
#include <Qt3Support/q3groupbox.h>
#include "new.h"

client_window::client_window()
{
    createButtonsLayout();
    newdisplay();
    //createButtonsLayout();
    /*maingrid = new QGridLayout;
    maingrid->addWidget(display,0,0);
    maingrid->addWidget(start,1,0);
    maingrid->addWidget(stop,2,0);*/
    setLayout(maingrid);
    setWindowTitle(tr("Client GUI"));
    resize(640,480);
}        

void client_window::createdisplay()
{
    QString format = "png";
    QString initialPath = QDir::currentPath() + tr("/untitled.") + format;
    QString fileName = QFileDialog::getOpenFileName(this, tr("Open"),
            initialPath,tr("%1 Files (*.%2);;All Files (*)")
            .arg(format.toUpper()).arg(format));
    if (!fileName.isEmpty())
    {
        QPixmap p(fileName); 
        //display->setMovie(p);
        display->resize(640,480); 
        p=p.scaled ( display->width(),display->height(), Qt::IgnoreAspectRatio, 
                                    Qt::SmoothTransformation );  
        display->setPixmap(p);
    }
}
                                                
void client_window::createButtonsLayout()
{
    start  = createButton(tr("Start"),this, SLOT(createdisplay()));
    stop = createButton(tr("Stop"), this, SLOT(close()));
}

QPushButton *client_window::createButton(const QString &text, QWidget *receiver,
        const char *member)
{
    QPushButton *button = new QPushButton(text);
    button->connect(button, SIGNAL(clicked()), receiver, member);
    return button;
}

void client_window::newdisplay()
{
    //maingrid = new QGridLayout();
    display = new QLabel;
    display->setObjectName(QString::fromUtf8("Image"));
    display->resize(640,480);
    
    options = new Q3GroupBox;
    options->setObjectName(QString::fromUtf8("options"));
    options->setGeometry(QRect(6, 380, 264, 93));
    QFont font;
    font.setPointSize(11);
    options->setFont(font);
    options->setColumnLayout(0, Qt::Vertical);
    maingrid = new QGridLayout();
    QBoxLayout *boxlayout = qobject_cast<QBoxLayout *>(options->layout());
    if (boxlayout)
        boxlayout->addLayout(maingrid);
    maingrid->setAlignment(Qt::AlignTop);
    maingrid->setObjectName(QString::fromUtf8("maingrid"));
    gridLayout1= new QGridLayout();
    gridLayout1->setObjectName(QString::fromUtf8("gridLayout1"));
    label = new QLabel(options);
    label->setObjectName(QString::fromUtf8("label"));
    label->setFont(font);
    label->setText("&Port Address");


    gridLayout1->addWidget(label, 0, 0, 1, 1);

    lineEdit = new QLineEdit(options);
    lineEdit->setObjectName(QString::fromUtf8("lineEdit"));
    lineEdit->setFont(font);
    

    gridLayout1->addWidget(lineEdit, 0, 1, 1, 2);

    spacerItem = new QSpacerItem(53, 20, QSizePolicy::Expanding,   
                                       QSizePolicy::Minimum);
    gridLayout1->addItem(spacerItem, 1, 0, 1, 1);

    //start = new QPushButton(options);
    //start->setObjectName(QString::fromUtf8("Start"));
    //start->setFont(font);
    //start->setText("Start");
    //createButtonsLayout();

    gridLayout1->addWidget(start, 1, 1, 1, 1);

    //stop = new QPushButton(options);
    //stop->setObjectName(QString::fromUtf8("stop"));
    //stop->setFont(font);
    //stop->setText("Stop");

    gridLayout1->addWidget(stop, 1, 2, 1, 1);

    //maingrid = new QGridLayout();
    maingrid->addLayout(gridLayout1, 0, 0, 1, 1);
    maingrid->addWidget(display,2,0,1,1);
    
    logmessages = new Q3GroupBox;
    logmessages->setObjectName(QString::fromUtf8("logmessages"));
    logmessages->setGeometry(QRect(278, 380, 346, 92));
    logmessages->setFont(font);
    logmessages->setColumnLayout(0, Qt::Vertical);
    gridLayout2 = new QGridLayout();
    QBoxLayout *boxlayout1 = qobject_cast<QBoxLayout *>(logmessages->layout());

    if (boxlayout1)
        boxlayout1->addLayout(gridLayout2);
    gridLayout2->setAlignment(Qt::AlignTop);
    gridLayout2->setObjectName(QString::fromUtf8("gridLayout2"));
    //maingrid->addLayout(gridLayout2,0,1,1,1);
    //graphicsView = new QGraphicsView(centralwidget);
    //graphicsView->setObjectName(QString::fromUtf8("graphicsView"));
    //graphicsView->setGeometry(QRect(5, 9, 620, 369));
    //graphicsView->setAutoFillBackground(true);
    //MainWindow->setCentralWidget(centralwidget);
    label->setBuddy(lineEdit);
}

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**marcel** · 6th May 2008, 09:52

First things I notice are that you don't set a parent for the group box and you don't add it to a layout.

Try doing that and see if you get anymore problems.

**bmn** · 6th May 2008, 10:26

How to create parent for QGroupBox

**mazurekwrc** · 6th May 2008, 10:37

add QGroupBox to layout and it set parent for this widget

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