QMainWindow::addDockWidget: invalid 'area' argument

[Yuri20]

I have quick implementation of QMainWindow based on *.ui generated design.

#include <QWidget>
#include "MainWindow.h"
#include "ui_MainWindow.h"
#include <iostream>
 
MainWindow::MainWindow(QWidget* parent){
    m_parent = parent;
    m_ui = new Ui::MainWindow;
    m_ui->setupUi(this);
    QObject::connect(m_ui->actionDodaj, SIGNAL(triggered()), SLOT(gupota()));
}
 
void MainWindow::gupota(){
    create_dock();
}
 
void MainWindow::create_dock(){
    QDockWidget* dock = new QDockWidget(this);
    dock->setAllowedAreas(Qt::AllDockWidgetAreas);
    this->addDockWidget(Qt::AllDockWidgetAreas, dock);
}

#include <QWidget>
#include "MainWindow.h"
#include "ui_MainWindow.h"
#include <iostream>

MainWindow::MainWindow(QWidget* parent){
    m_parent = parent;
    m_ui = new Ui::MainWindow;
    m_ui->setupUi(this);
    QObject::connect(m_ui->actionDodaj, SIGNAL(triggered()), SLOT(gupota()));
}

void MainWindow::gupota(){
    create_dock();
}

void MainWindow::create_dock(){
    QDockWidget* dock = new QDockWidget(this);
    dock->setAllowedAreas(Qt::AllDockWidgetAreas);
    this->addDockWidget(Qt::AllDockWidgetAreas, dock);
}

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After creating new QDockWidget in create_dock() Qt returns to console

QMainWindow::addDockWidget: invalid 'area' argument

QMainWindow::addDockWidget: invalid 'area' argument

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If I change Qt::AllDockWidgetAreas to for example Qt::LeftDockWidgetArea (or anything else except Qt::AllDockWidgetAreas) everything works fine. Why is that? I want to be able to move QDockWidget everywhere I want to, not only to the left or right or top or bottom...

[anda_skoa]

Consider for a moment what the name of the method is.

Then consider that a widget can only be at one place at any given time.

Cheers,
_

[Yuri20]

Ok, I understand that QDockWidget cannot be added to all sides at the same time :P But why I cannot move QDockWidget to for example right side of QMainWindow when it was attached at first to the left side?

[anda_skoa]

That should work indeed.

Both the default for allowed areas (all) as well as features (movable) are OK with that.

Are you asking for a user triggered move or doing it programmatically?

Cheers,
_