QDockWidget saveState and restoreState

**stefanadelbert** · 25th February 2010, 23:24

I'm having a similar problem at the moment where some of the states of QDockWidgets are not restored (like floatable). I'm looking into this at the moment and will hopefully find a solution.

**stefanadelbert** · 1st March 2010, 03:36

I've managed to narrow down the strange behaviour to nested dock widgets.

Call QMainWindow::saveState on a main window with two docked QDockWidgets which are nested/tabbed
Float one of the nested/tabbed QDockWidgets
Call QMainWindow::restoreState

EXPECT: Both QDockWidgets to be nested/tabbed as they were before QMainWindow::saveState.
ACTUAL: The docked, nested/tabbed state of the QDockWidget is not restored - it's left floating.

I have not had time to create example code to demonstrate this. Would it be of use to anyone?

**DizL** · 28th January 2016, 09:56

The same problem :/

In general I have a big problem with restoreState/restoreGeometry, QSettings ini file looks good after saving (objectname (is unique), dockwidget area, geometry),

Qt Code:

Switch view

[docks]
dock\1\objectName="Type_1;5"
dock\1\area=2
dock\1\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\x4\xc8\0\0\x1\x45\0\0\x6\x31\0\0\x2H\0\0\x4\xc8\0\0\x1\x45\0\0\x6\x31\0\0\x2H\0\0\0\0\0\0\0\0\a\x80)
dock\2\objectName="Type_2;3"
dock\2\area=2
dock\2\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\x4\xc8\0\0\0\x1e\0\0\x6\x31\0\0\x1\x42\0\0\x4\xc8\0\0\0\x1e\0\0\x6\x31\0\0\x1\x42\0\0\0\0\0\0\0\0\a\x80)
dock\3\objectName="Type_3;4"
dock\3\area=8
dock\3\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\0\0\0\0\x2\xbc\0\0\x6\x31\0\0\x3s\0\0\0\0\0\0\x2\xbc\0\0\x6\x31\0\0\x3s\0\0\0\0\0\0\0\0\a\x80)
dock\4\objectName="Type_4;7"
dock\4\area=2
dock\4\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\x4\xc8\0\0\x2K\0\0\x6\x31\0\0\x2\xb9\0\0\x4\xc8\0\0\x2K\0\0\x6\x31\0\0\x2\xb9\0\0\0\0\0\0\0\0\a\x80)
dock\5\objectName="Type_5;2"
dock\5\area=1
dock\5\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\0\0\0\0\0\x1e\0\0\x1O\0\0\x1\xb1\0\0\0\0\0\0\0\x1e\0\0\x1O\0\0\x1\xb1\0\0\0\0\0\0\0\0\a\x80)
dock\6\objectName="Type_6;5"
dock\6\area=1
dock\6\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\0\0\0\0\x1\xb4\0\0\x1O\0\0\x2\xb9\0\0\0\0\0\0\x1\xb4\0\0\x1O\0\0\x2\xb9\0\0\0\0\0\0\0\0\a\x80)
dock\7\objectName="Type_7;3"
dock\7\area=0
dock\7\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\f\x84\0\0\x2\x39\0\0\xe(\0\0\x3\x96\0\0\f\x8c\0\0\x2X\0\0\xe \0\0\x3\x8e\0\0\0\x1\0\0\0\0\a\x80)
dock\size=7
 
[Window]
geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\0\x80\0\0\0\x33\0\0\x6\xc1\0\0\x3\xe1\0\0\0\x88\0\0\0R\0\0\x6\xb9\0\0\x3\xd9\0\0\0\0\0\0\0\0\a\x80)
windowState="@ByteArray(\0\0\0\xff\0\0\0\0\xfd\0\0\0\x3\0\0\0\0\0\0\x1P\0\0\x2\x9c\xfc\x2\0\0\0\x2\xfb\0\0\0\x1a\0T\0\x65\0l\0\x65\0m\0\x65\0t\0r\0y\0_\0\x35\0;\0\x32\x1\0\0\0\x1e\0\0\x1\x94\0\0\x1!\0\xff\xff\xff\xfb\0\0\0\x18\0M\0\x61\0i\0n\0V\0i\0\x65\0w\0_\0\x36\0;\0\x35\x1\0\0\x1\xb4\0\0\x1\x6\0\0\x1\x4\0\xff\xff\xff\0\0\0\x1\0\0\x1j\0\0\x2\x9c\xfc\x2\0\0\0\x3\xfb\0\0\0*\0\x41\0r\0t\0i\0\x66\0i\0\x63\0i\0\x61\0l\0H\0o\0r\0i\0z\0o\0n\0_\0\x32\0;\0\x33\x1\0\0\0\x1e\0\0\x1%\0\0\0\xc8\0\xff\xff\xff\xfb\0\0\0\x18\0M\0\x61\0i\0n\0V\0i\0\x65\0w\0_\0\x31\0;\0\x35\x1\0\0\x1\x45\0\0\x1\x4\0\0\x1\x4\0\xff\xff\xff\xfb\0\0\0\x1a\0L\0o\0g\0P\0l\0\x61\0y\0\x65\0r\0_\0\x34\0;\0\x37\x1\0\0\x2K\0\0\0o\0\0\0o\0\xff\xff\xff\0\0\0\x3\0\0\x6\x32\0\0\0\xb8\xfc\x1\0\0\0\x1\xfb\0\0\0&\0W\0\x61\0y\0P\0o\0i\0n\0t\0s\0W\0i\0\x64\0g\0\x65\0t\0_\0\x33\0;\0\x34\x1\0\0\0\0\0\0\x6\x32\0\0\x3O\0\xff\xff\xff\0\0\x3t\0\0\x2\x9c\0\0\0\x4\0\0\0\x4\0\0\0\b\0\0\0\b\xfc\0\0\0\0)"
size=@Size(1586 904)
pos=@Point(128 51)

[docks]
dock\1\objectName="Type_1;5"
dock\1\area=2
dock\1\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\x4\xc8\0\0\x1\x45\0\0\x6\x31\0\0\x2H\0\0\x4\xc8\0\0\x1\x45\0\0\x6\x31\0\0\x2H\0\0\0\0\0\0\0\0\a\x80)
dock\2\objectName="Type_2;3"
dock\2\area=2
dock\2\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\x4\xc8\0\0\0\x1e\0\0\x6\x31\0\0\x1\x42\0\0\x4\xc8\0\0\0\x1e\0\0\x6\x31\0\0\x1\x42\0\0\0\0\0\0\0\0\a\x80)
dock\3\objectName="Type_3;4"
dock\3\area=8
dock\3\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\0\0\0\0\x2\xbc\0\0\x6\x31\0\0\x3s\0\0\0\0\0\0\x2\xbc\0\0\x6\x31\0\0\x3s\0\0\0\0\0\0\0\0\a\x80)
dock\4\objectName="Type_4;7"
dock\4\area=2
dock\4\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\x4\xc8\0\0\x2K\0\0\x6\x31\0\0\x2\xb9\0\0\x4\xc8\0\0\x2K\0\0\x6\x31\0\0\x2\xb9\0\0\0\0\0\0\0\0\a\x80)
dock\5\objectName="Type_5;2"
dock\5\area=1
dock\5\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\0\0\0\0\0\x1e\0\0\x1O\0\0\x1\xb1\0\0\0\0\0\0\0\x1e\0\0\x1O\0\0\x1\xb1\0\0\0\0\0\0\0\0\a\x80)
dock\6\objectName="Type_6;5"
dock\6\area=1
dock\6\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\0\0\0\0\x1\xb4\0\0\x1O\0\0\x2\xb9\0\0\0\0\0\0\x1\xb4\0\0\x1O\0\0\x2\xb9\0\0\0\0\0\0\0\0\a\x80)
dock\7\objectName="Type_7;3"
dock\7\area=0
dock\7\geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\f\x84\0\0\x2\x39\0\0\xe(\0\0\x3\x96\0\0\f\x8c\0\0\x2X\0\0\xe \0\0\x3\x8e\0\0\0\x1\0\0\0\0\a\x80)
dock\size=7

[Window]
geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x2\0\0\0\0\0\x80\0\0\0\x33\0\0\x6\xc1\0\0\x3\xe1\0\0\0\x88\0\0\0R\0\0\x6\xb9\0\0\x3\xd9\0\0\0\0\0\0\0\0\a\x80)
windowState="@ByteArray(\0\0\0\xff\0\0\0\0\xfd\0\0\0\x3\0\0\0\0\0\0\x1P\0\0\x2\x9c\xfc\x2\0\0\0\x2\xfb\0\0\0\x1a\0T\0\x65\0l\0\x65\0m\0\x65\0t\0r\0y\0_\0\x35\0;\0\x32\x1\0\0\0\x1e\0\0\x1\x94\0\0\x1!\0\xff\xff\xff\xfb\0\0\0\x18\0M\0\x61\0i\0n\0V\0i\0\x65\0w\0_\0\x36\0;\0\x35\x1\0\0\x1\xb4\0\0\x1\x6\0\0\x1\x4\0\xff\xff\xff\0\0\0\x1\0\0\x1j\0\0\x2\x9c\xfc\x2\0\0\0\x3\xfb\0\0\0*\0\x41\0r\0t\0i\0\x66\0i\0\x63\0i\0\x61\0l\0H\0o\0r\0i\0z\0o\0n\0_\0\x32\0;\0\x33\x1\0\0\0\x1e\0\0\x1%\0\0\0\xc8\0\xff\xff\xff\xfb\0\0\0\x18\0M\0\x61\0i\0n\0V\0i\0\x65\0w\0_\0\x31\0;\0\x35\x1\0\0\x1\x45\0\0\x1\x4\0\0\x1\x4\0\xff\xff\xff\xfb\0\0\0\x1a\0L\0o\0g\0P\0l\0\x61\0y\0\x65\0r\0_\0\x34\0;\0\x37\x1\0\0\x2K\0\0\0o\0\0\0o\0\xff\xff\xff\0\0\0\x3\0\0\x6\x32\0\0\0\xb8\xfc\x1\0\0\0\x1\xfb\0\0\0&\0W\0\x61\0y\0P\0o\0i\0n\0t\0s\0W\0i\0\x64\0g\0\x65\0t\0_\0\x33\0;\0\x34\x1\0\0\0\0\0\0\x6\x32\0\0\x3O\0\xff\xff\xff\0\0\x3t\0\0\x2\x9c\0\0\0\x4\0\0\0\x4\0\0\0\b\0\0\0\b\xfc\0\0\0\0)"
size=@Size(1586 904)
pos=@Point(128 51)

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but after loading it looks bad:| (especially in case when added before new dockwidgets, and removed some of old) :/
this is how i load it

Qt Code:

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QSettings settings(QApplication::applicationDirPath() + fileini, QSettings::IniFormat);
 
    settings.beginGroup("docks");
 
    int DocksCount = settings.beginReadArray("dock");
    if(DocksCount > 0)
    {
        for(int i = 0; i < DocksCount; i++)
        {
            settings.setArrayIndex(i);
 
            QString objectName = settings.value("objectName").toString();
 
            QDockWidget* dock = addSubWindow(objectName);
            if(dock)
            {
                Qt::DockWidgetArea area = static_cast<Qt::DockWidgetArea>(settings.value("area").toInt());
                this->addDockWidget(area, dock);
                dock->restoreGeometry(settings.value("geometry").toByteArray());
            }
        }
    }
    settings.endArray();
    settings.endGroup();
 
    settings.beginGroup("Window");
    restoreGeometry(settings.value("geometry").toByteArray());
    restoreState(settings.value("windowState").toByteArray());
 
    resize(settings.value("size", QSize(1200, 800)).toSize());
    move(settings.value("pos", QPoint(0, 0)).toPoint());

QSettings settings(QApplication::applicationDirPath() + fileini, QSettings::IniFormat);

    settings.beginGroup("docks");

    int DocksCount = settings.beginReadArray("dock");
    if(DocksCount > 0)
    {
        for(int i = 0; i < DocksCount; i++)
        {
            settings.setArrayIndex(i);

            QString objectName = settings.value("objectName").toString();

            QDockWidget* dock = addSubWindow(objectName);
            if(dock)
            {
                Qt::DockWidgetArea area = static_cast<Qt::DockWidgetArea>(settings.value("area").toInt());
                this->addDockWidget(area, dock);
                dock->restoreGeometry(settings.value("geometry").toByteArray());
            }
        }
    }
    settings.endArray();
    settings.endGroup();

    settings.beginGroup("Window");
    restoreGeometry(settings.value("geometry").toByteArray());
    restoreState(settings.value("windowState").toByteArray());

    resize(settings.value("size", QSize(1200, 800)).toSize());
    move(settings.value("pos", QPoint(0, 0)).toPoint());

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any help?

Regards,
DizL

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