QTabBar::expanding() feature

Algirdasss

I derived QTabWidget class and tried to set expanding property on the tab bar. I expect tabs to stretch and take all tab bar space, but it seems that property does nothing. Do I misunderstand the meaning of this property or there is something wrong with implementation?

Has anybody managed to use this property successfully??

dguimard

hello

does the QTabWidget is wrapped into a dialog as well or did you set the sizepolicy ?

setSizePolicy(QSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding));

hope that it help,

regards
david

Algirdasss

My code:

MainWindow.h

@class MyTabWidget : public QTabWidget
{
public:
MyTabWidget(){
tabBar()->setExpanding(true);
qDebug() << "EXPANDING IS " << tabBar()->expanding();
}
};

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();

protected:
void changeEvent(QEvent *e);

private:
Ui::MainWindow *ui;
};@

MainWindow.cpp

@MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);

MyTabWidget *mtw = new MyTabWidget();
mtw->addTab(new QWidget(), "Tab 1");
mtw->addTab(new QWidget(), "Tab 2");

this->setCentralWidget(mtw);

}@

Thats what Qt documentation says about that property:

bq. expanding : bool
This property holds when expanding is true QTabBar will expand the tabs to use the empty space.
By default the value is true.
This property was introduced in Qt 4.5.
Access functions:
bool expanding () const
void setExpanding ( bool enabled )
See also QTabWidget::documentMode.

So as I uderstand, this property should work like this .... ??
!http://picasaweb.google.com/lh/photo/ch2fTaNW6kb3_jnc2S0Low?feat=directlink()!

BlackDante

maybe this would help:
@class MyTabWidget : public QTabWidget
{
Q_OBJECT
public:
MyTabWidget(QTabWidget *parent = 0){
tabBar()->setExpanding(true);
qDebug() << "EXPANDING IS " << tabBar()->expanding();
}
};@

Algirdasss

Amm ... tested. No results. Do you think addition of Q_OBJECT macro may change something?