Adding widget into custom QWidget

RomRom

Hello everybody,
i'm newbbie and I have some problem with my Qt Custom Widget.
I wrote a custom widget, and integrate it to Designer.

With Designer, some Widget (like QGroupBox) accepts drop off other widget on it.
But with my custom I can't, I don't really know why. To create a custom widget my class herits of QWidget. I think it could be a problem.

I tryed to add a layout to my custom widget but there is no action...

Can you give me a help please ?

Thank you.

.h
@
#ifndef QTBORDERWIDGET_H
#define QTBORDERWIDGET_H

#include <QtGui>
#include <QDesignerExportWidget>
#include <QWidget>
#include <QHBoxLayout>
#include <QGroupBox>
#include <QLabel>

#include <QMetaType>

class QDESIGNER_WIDGET_EXPORT QtBorderWidget : public QWidget
{
Q_OBJECT

Q_PROPERTY(QString m_title READ getTitle WRITE setTitle NOTIFY titleChanged DESIGNABLE true)

public:
QtBorderWidget(QWidget *parent = 0);

QString getTitle() const;
void setTitle(QString t);

signals:
void titleChanged(const QString);

private slots:
void onTitleChanged(const QString);

private:
QWidget *m_widget;
QHBoxLayout *m_hLayout;
QGroupBox *m_groupbox;
QString m_title;

protected:
void paintEvent(QPaintEvent *e);
};

#endif
@

.cpp
@
#include "QtBorderWidget.h"

QtBorderWidget::QtBorderWidget(QWidget *parent)
: QWidget(parent)
{
m_widget = new QWidget(parent);
m_hLayout = new QHBoxLayout(m_widget);
m_groupbox = new QGroupBox(m_widget);
m_title = "GroupBox";

m_hLayout->setContentsMargins(0, 0, 0, 0);

QSizePolicy sizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
sizePolicy.setHorizontalStretch(0);
sizePolicy.setVerticalStretch(0);
sizePolicy.setHeightForWidth(m_groupbox->sizePolicy().hasHeightForWidth());

m_groupbox->setSizePolicy(sizePolicy);
m_groupbox->setFlat(true);
m_groupbox->setMinimumSize(120,80);

m_hLayout->addWidget(m_groupbox);
setLayout(m_hLayout);

connect(this, SIGNAL(titleChanged(QString)), this, SLOT(onTitleChanged(QString)));

}

void QtBorderWidget::paintEvent(QPaintEvent *e)
{
QPainter p(this);
QRect r1(0, 10, this->width()-1, this->height()-11);
QRect r2(0, 0, this->width()-1, 20);

p.setPen(QColor(0, 0, 0));
p.setBackgroundMode(Qt::OpaqueMode);
p.drawRoundedRect(r1, 10, 10, Qt::AbsoluteSize);

p.setOpacity(1.0);
p.setBackgroundMode(Qt::OpaqueMode);
p.drawText(r2, Qt::AlignCenter, m_title);

m_groupbox->resize(this->width()-1, this->height()-1);

}

QString QtBorderWidget::getTitle() const
{
return m_title;
}

void QtBorderWidget::setTitle(QString t)
{
m_title = t;
emit titleChanged(m_title);
}

void QtBorderWidget::onTitleChanged(QString t)
{
m_title = t;
repaint();
}
@

ambershark

What is m_widget supposed to be? From the looks of it, the class itself is what you intended for m_widget yet you create a QWidget and parent it to the parent of your class

@
m_widget = new QWidget(parent);
@

Then you create layouts the are set to m_widget with this:

@
m_hLayout = new QHBoxLayout(m_widget);
@

And finally you try to then use those layouts in your main class widget:

@
setLayout(m_hLayout);
@

That line above won't work as you can't reparent the widget to this when you already set it as a layout for m_widget when you created the layout.

I'm thinking everywhere you are using m_widget you are actually meaning to use this->xxx().

I don't use designer much so I can't help you on integrating with that though. I prefer to just write the code myself rather than use Designer.