[Qt-interest] QDialog with wrong contentsMargins()

[Anton Chernov]

Try setting the parent directly...

/***************************/


#include <QApplication>

#include <QDebug>



#include <QDialog>

#include <QPushButton>

#include <QVBoxLayout>

#include <QStyle>



int main ( int argc, char* argv[] )

{

QApplication app(argc, argv);

QDialog dlg;

QVBoxLayout *layout = new QVBoxLayout( &dlg );

QPushButton *btn = new QPushButton("Close", &dlg);

dlg.connect(btn, SIGNAL(clicked()), SLOT(close()));

layout->addWidget(btn);

dlg.show();



//Here i expected the values to be equal but they are not. I get 11 and 4

qDebug() << dlg->layout()->contentsMargins().left() <<
dlg->style()->pixelMetric(QStyle::PM_LayoutLeftMargin);

app.exec();

}

/******************/

2011/8/31 Kishore Jonnalagadda <kitts.mailinglists at gmail.com>

> Anyone has any information on this?
>
> --
> Cheers!
> Kishore
> On Aug 29, 2011 3:35 PM, "Kishore Jonnalagadda" <
> kitts.mailinglists at gmail.com> wrote:
> > On Aug 29, 2011 2:23 PM, "Anton Chernov" <mechernov at gmail.com> wrote:
> >>
> >> OMG!
> >>
> >> If set on the widget or dialog it should be padding! not margin - margin
> > would be for layout contents
> >>
> >> look here
> > http://doc.qt.nokia.com/latest/stylesheet-customizing.html#box-model
> >>
> >> setStyleSheet( QString( "QDialog { padding: %1px; }" ).arg( value ) );
> >
> > Sorry, I think I lost you there... I am indeed trying to apply margins to
> > the layout of a dialog. See my first post. The problem I seem to have is
> > that I expect the layout to default to the styles recommended margin (4px
> in
> > oxygen style and 9 in plastique). Here is a simple example.
> >
> > /***************************/
> >
> > #include <QApplication>
> >
> > #include <QDebug>
> >
> >
> > #include <QDialog>
> >
> > #include <QPushButton>
> >
> > #include <QVBoxLayout>
> >
> > #include <QStyle>
> >
> >
> > int main ( int argc, char* argv[] )
> >
> > {
> >
> > QApplication app(argc, argv);
> >
> > QDialog *dlg = new QDialog();
> >
> > QVBoxLayout *layout = new QVBoxLayout;
> >
> > QPushButton *btn = new QPushButton("Close", dlg);
> >
> > dlg->connect(btn, SIGNAL(clicked()), SLOT(close()));
> >
> > layout->addWidget(btn);
> >
> > dlg->setLayout(layout);
> >
> > dlg->show();
> >
> >
> >
> > //Here i expected the values to be equal but they are not. I get 11 and 4
> >
> > qDebug() << dlg->layout()->contentsMargins().left() <<
> > dlg->style()->pixelMetric(QStyle::PM_LayoutLeftMargin);
> >
> > app.exec();
> >
> > }
> >
> > /******************/
> >
> >> 2011/8/29 Kishore Jonnalagadda <kitts.mailinglists at gmail.com>
> >>>
> >>> On Aug 29, 2011 12:16 PM, "Anton Chernov" <mechernov at gmail.com> wrote:
> >>> >
> >>> > I forgot to write px to units :)
> >>> >
> >>> > setStyleSheet( QString( "QDialog { margin: %1px; }" ).arg( value ) );
> >>>
> >>> I noticed that and added that myself. Still no luck :(
> >>>
> >>> This appears to be a qt bug as I changed style to plastique but that
> did
> > not help either.
> >>>
> >>> > 2011/8/29 Kishore Jonnalagadda <kitts.mailinglists at gmail.com>
> >>> >>
> >>> >> On Aug 27, 2011 7:33 PM, "Anton Chernov" <mechernov at gmail.com>
> wrote:
> >>> >> >
> >>> >> > Use style sheets - QString( "QDialog { margin: %1; }" ).arg( value
> > );
> >>> >> >
> >>> >> > Set on the main window, or any other global parents.
> >>> >>
> >>> >> Did not work. I tried applying this stylesheet on both the
> application
> > and to the dialog directly but it did not help.
> >>> >>
> >>> >> > 2011/8/26 Kishore Jonnalagadda <kitts.mailinglists at gmail.com>
> >>> >> >>
> >>> >> >> In alomost all my QDialog subclasses (using designer), I find
> that
> > i need to
> >>> >> >> add this to the constructor.
> >>> >> >>
> >>> >> >> layout()->setContentsMargins(
> >>> >> >> style()->pixelMetric(QStyle::PM_LayoutLeftMargin),
> >>> >> >> style()->pixelMetric(QStyle::PM_LayoutTopMargin),
> >>> >> >> style()->pixelMetric(QStyle::PM_LayoutRightMargin),
> >>> >> >> style()->pixelMetric(QStyle::PM_LayoutBottomMargin));
> >>> >> >>
> >>> >> >> Without that it uses 11 pixels as the margins which is said to be
> > the common
> >>> >> >> default in the docs but is dependent on the style. Here on my
> > system with the
> >>> >> >> Oxygen style it should be 4 pixels (which is what is shown in
> > designer when
> >>> >> >> designing the dialog). However, i have to explicitly set it with
> > the code
> >>> >> >> above.
> >>> >> >>
> >>> >> >> 11 pixels is a bit too much and looks ugly. While i atleast have
> > the option of
> >>> >> >> putting the code above for most dialogs, the same i can't do with
> a
> > QWizard
> >>> >> >> (layout() return a NULL).
> >>> >> >>
> >>> >> >> I'd like to know if my understanding is wrong* or if this is
> indeed
> > a bug in
> >>> >> >> Qt/Oxygen?
> >>> >> >> --
> >>> >> >> Cheers!
> >>> >> >> Kishore
> >>> >> >>
> >>> >> >> * The layout system for widgets is quite complex I yet have not a
> > grasp of how
> >>> >> >> things work.
> >>> >> >> _______________________________________________
> >>> >> >> Qt-interest mailing list
> >>> >> >> Qt-interest at qt.nokia.com
> >>> >> >> http://lists.qt.nokia.com/mailman/listinfo/qt-interest
> >>> >> >
> >>> >> >
> >>> >
> >>> >
> >>
> >>
>
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