Layout issue in the window.

[maximus]

Hi there,

Instead of a QTabWidget on the left side, you could use a QListView linked to a QStackedLayout
Not sure this is what you need, but you can achieve this kind of interface:
https://www.dropbox.com/s/bu56ww44y9du3is/QStacked1.png?dl=0

Basically you can hide/show multiple QWidget on the QStackLayout depending on the selection of the QListView.
Good luck!

[N.Sumi]

Hi Mr.Maximus,

I need a Tabwidget with two tabs, each tab holds different controls. Could you please have a look on my link.'SO that you will get an idea.
thanks for your advice.
Please have look on the image attached here.

https://www.dropbox.com/s/803li7jw83j7kwk/mainlayoutopengl.PNG?dl=0

thanks,
Sumi.

[maximus]

Thank you for the picture.

You could have a ListView on the left replacing the TabWidget, then 2 QStackWidget on the right.
Would be best if you could show the interaction with the 3 UI at the bottom so we can understand better what you need. Hand written UI works fine for saving time :)

[N.Sumi]

Thank you Mr. Maximus,

In the moment I don't have full stuff to show. But I can explain the whole thing for better understanding of my problem. But approximately I will going to some stuff some like this. Please have a look on controls and visualization window. In my case I also will be having another dock on Right side. Thid right side dock will also make communication Visualization screen,

https://www.dropbox.com/s/99tf0o2o86u4kte/Mainlayout.PNG?dl=0

Might after end of the code.It might look this stuff

https://www.dropbox.com/s/ovepkozf07nw2lc/threeclusters_.bmp?dl=0

thank in advance,
Sumi

[N.Sumi]

Here is part of my code:
mainwindow::mainwindow()
{
Qwidget *window = new Qwidget;
size
title
creat Actions();
createmenubar();
createtoolbar();

Q**** mainlayout = new Q***; ////////////////////////how to give the layout like in the linkof the above post
mainlayout->addwidget/layout (tabwidget goes here);
mainlayout->addlayout(gridodopengldocks);
mainlayout->addLayout(property_dock);
windows->setlayout(mainlayout)

}
void mainwindow:: createmenubar()
{
//menu stuff file edit blah etc
}
void mainwindow::createtoolbar()
{
fonttoolbar->addaction***** blah
}
void mainwindow::create_tabW_widget_container()
{
}
void mainwindow::createdocks_for_opengl()
{
Qgridlayout *gridodopengldocks = new QGridlayout;
Qdockwidget 'dock = new Qdockwidget;
QOpenGLWidget *glwidget = new QopenglWidget;
dock->addwidget(glWidget);
}

void mainwindow::createporperty()
{
Qdockwidget 'prop_ock = new Qdockwidget;
property_dock->setpositon (Right..)

}

[maximus]

Oh I see now.

You only need a QHorizontalLayout a the bottom for your 3 QWidgets

So basically:

1. Set Main Layout to a Vertical Layout
2. Insert Menu Bar, Tool, bar, specifiy a maximum height so it doesn't take too much
3. Create a Horizontal Layout, insert your 3 QWidget there
4. Insert the Horizontal Layout(3) in the Vertical Layout

You can do all this in the Designer just for testing
Good luck,
Max

[N.Sumi]

This post is deleted!

[N.Sumi]

Hi Maximus ,

I was trying this as you told.But it is giving me the crash. I don't know Where I did mistake.
It is giving error :: QLayout: Cannot add a null layout to QHBoxLayout/

And here is code clip..

MainWindow:: MainWindow()
{
    QWidget *window = new QWidget();
    setCentralWidget(window);


    QHBoxLayout *HLayout = new QHBoxLayout;
    HLayout->addLayout(tabbox );
    HLayout->addLayout(grid);
    HLayout->addLayout(docks);

    QVBoxLayout *mainLayout = new QVBoxLayout;
    mainLayout->addLayout(HLayout);
    window->setLayout(mainLayout);


    createActions();
    createMenus();
    createToolBar();
   createPropertyDock();
    createtabwidget();
   createDockWidget();


    QString message = tr("A context menu is available by right-clicking");
    statusBar()->showMessage(message);

    setWindowTitle(tr("Mainwindow"));
    setMinimumSize(160, 160);
    resize(1200, 800);
}

void MainWindow :: createPropertyDock()
{
   QHBoxLayout *docks =new QHBoxLayout;
    QDockWidget *dock = new QDockWidget(tr("Properties"), this);
    docks->addWidget(dock);

    dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);

    addDockWidget(Qt::RightDockWidgetArea, dock);

}
 void MainWindow :: createtabwidget()
  {
    QHBoxLayout *tabbox = new QHBoxLayout;
    QTabWidget *tabWidget = new QTabWidget;
    tabbox->addWidget(tabWidget);
    tabWidget->setTabPosition(QTabWidget::West);

    tabWidget->setSizePolicy(QSizePolicy ::Fixed , QSizePolicy ::Fixed);
         //tabWidget->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
    tabWidget->setMinimumSize(256,1160);
    tabWidget->setMaximumSize(256,1160);
}
void MainWindow::createDockWidget()
{
   QGridLayout *grid = new QGridLayout;
    QDockWidget *dw = new QDockWidget;
    grid->addWidget(dw);
    dw->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
        dw->setWidget(new QOpenGLWidget);
}

thnaks in advance ,
Sumi

[edit: Added missing coding tags ``` SGaist]

[mrjj]

@N.Sumi said:
Hi, just a question.
in
void MainWindow :: createtabwidget()
you create the local variable:
QHBoxLayout *tabbox = new QHBoxLayout;
and in
MainWindow:: MainWindow()
Layout->addLayout(tabbox );

If they are the same ?, then tabbox should live in MainWindow class and it should be
tabbox = new QHBoxLayout;
in createtabwidget()
My guess is that you did declare them in .h but made a local var by accident. ?

[N.Sumi]

Hi mrjj,

you are right. They both are same. But I have changed them to as you said. But it's stilling not working. I dont know what the mistake am doing here.

[maximus]

Good way to find where it crash it put qDebug message here and there, or use the debugger.

[SGaist]

Hi,

If it crashes, a simple run through the debugger will tell you where exactly it misbehave