DockWidget ?

[allensr]

I have a widget that I cannot get to "show up" inside of my dock widget. It shows up un-docked on top of my main window. My widget is just a clock with some VCR-like buttons (play, stop,etc).
A dock widget is created on my main window at the top like I want, but nothing is in it.

Here is my set up for my clock:

class cClockDlg : public QWidget, public Ui::cClockDlg
{
   Q_OBJECT
public:
   cClockDlg(QWidget * parent = 0);
...
};

class cClockDlg : public QWidget, public Ui::cClockDlg
{
   Q_OBJECT
public:
   cClockDlg(QWidget * parent = 0);
...
};

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And then in my mainWindow where I try to make it a dockWidget:

Note: I call this method in my mainWindow constructor after I call setupUi(this).

void cMainWindow::setupClockWidget()
{
   QDockWidget * clockDockWidget = new QDockWidget(tr("Simulation Clock"), this);
   clockDockWidget->setAllowedAreas(Qt::AllDockWidgetAreas);
   mClockDlg = new cClockDlg(clockDockWidget);
   clockDockWidget->setWidget(mClockDlg);
   addDockWidget(Qt::TopDockWidgetArea, clockDockWidget);
} // cMainWindow::setupClockWidget

void cMainWindow::setupClockWidget()
{
   QDockWidget * clockDockWidget = new QDockWidget(tr("Simulation Clock"), this);
   clockDockWidget->setAllowedAreas(Qt::AllDockWidgetAreas);
   mClockDlg = new cClockDlg(clockDockWidget);
   clockDockWidget->setWidget(mClockDlg);
   addDockWidget(Qt::TopDockWidgetArea, clockDockWidget);
} // cMainWindow::setupClockWidget

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Any ideas on what I'm doing wrong? TIA.

[jpn]

Is "cClockDlg", by any chance, designed as a dialog project in the Qt Designer?

[zeeeend]

I understand you call setupUi() BEFORE you construct the cClockDlg. You`re supposed to call setupUi() inside the constructor of cClockDg. A look inside ui_cclockdlg at the setupUi method will explain why you don`t see your widgets inside your dialog.

zeeeend

[allensr]

Yes, cClockDlg is a dialog created in Designer. And in cClockDlg constructor I call its setupUi(this).

[jpn]

My first thought was that it was all about QDialog. QDialog is a special widget that behaves differently than all other widgets (it's always a top level widget, regardless of the parent). Anyway, this seems not to be the case since cClockDlg is just a plain QWidget (and I don't suspect you would be setting the window type as Qt::Dialog). It's just the naming that got me confused.. ;)

All I can come up with is a parenting issue. How does the constructor of cClockDlg look like? Are you calling the base class constructor to pass the parent?

cClockDlg::cClockDlg(QWidget * parent) : QWidget(parent) // <-- forgot this?
{
   ...
}

cClockDlg::cClockDlg(QWidget * parent) : QWidget(parent) // <-- forgot this?
{
   ...
}

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[allensr]

Yeah, I should have changed the name, but it was originally designed to be a dialog but we changed it to a QWidget. Sorry for the confusion.

Anyway, this is cClockDlg constructor. Nothing fancy.

cClockDlg::cClockDlg(QWidget * parent) :
   QWidget(parent)
{
   setupUi(this);
} // cClockDlg::cClockDlg

cClockDlg::cClockDlg(QWidget * parent) :
   QWidget(parent)
{
   setupUi(this);
} // cClockDlg::cClockDlg

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[jpn]

Try reproducing it with a minimal example and/or isolating the problem in the actual project by commenting out everything but essential to reproduce the problem.. It still sounds like a parenting issue, but at least I can't see anything wrong with the snippets you have provided.

You could use QObject::dumpObjectTree() to examine the hierarchy of the objects.

[aamer4yu]

From your earlier post...

Note: I call this method in my mainWindow constructor after I call setupUi(this).

how many times are u calling setupUI() ?? u need to call it once in cClockDlg constructor...
are u calling it in cMainWindow constructor too ??

[allensr]

jpn,
I finally got to your suggestion. And called dumpObject tree this way:

void cMainWindow::setupClockWidget()
{
   QDockWidget * clockDockWidget = new QDockWidget(tr("Simulation Clock"), this);
   clockDockWidget->setAllowedAreas(Qt::AllDockWidgetAreas);
   mClockDlg = new cClockDlg(clockDockWidget);
   clockDockWidget->setWidget(mClockDlg);
   addDockWidget(Qt::TopDockWidgetArea, clockDockWidget);
   clockDockWidget->dumpObjectTree();
} // cMainWindow::setupClockWidget

void cMainWindow::setupClockWidget()
{
   QDockWidget * clockDockWidget = new QDockWidget(tr("Simulation Clock"), this);
   clockDockWidget->setAllowedAreas(Qt::AllDockWidgetAreas);
   mClockDlg = new cClockDlg(clockDockWidget);
   clockDockWidget->setWidget(mClockDlg);
   addDockWidget(Qt::TopDockWidgetArea, clockDockWidget);
   clockDockWidget->dumpObjectTree();
} // cMainWindow::setupClockWidget

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And got this result:
[HTML]
QDockWidget::
QGridLayout::
QVBoxLayout::
QWidgetResizeHandler::
QAction::
QDockWidgetTitleButton::
QDockWidgetTitleButton::
cClockDlg::cClockDlg
QWidget::layoutWidget
QHBoxLayout::hboxLayout
QPushButton::mToStart
QPushButton::mReverseFast
QPushButton::mReverse
QPushButton::mPause
QPushButton::mForward
QPushButton::mForwardFast
QPushButton::mToEnd
QWidget::layoutWidget1
QHBoxLayout::hboxLayout1
QLabel::mTimeLabel
QTimeEdit::mTimeEdit
QLineEdit::qt_spinbox_lineedit
QAction::
QAction::
QAction::
QAction::
QAction::
QAction::
QAction::
QValidator::qt_spinboxvalidator
QScrollBar::mTimeScrollBar
[/HTML]

I think you're right in that it's a parenting issue, because I don't see any reference to the MainWindow in this heirarchy. I thought that "this" in this call:

QDockWidget * clockDockWidget = new QDockWidget(tr("Simulation Clock"), this);

QDockWidget * clockDockWidget = new QDockWidget(tr("Simulation Clock"), this);

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set up the reference to the main window.