[Qt-interest] qtoolbar

[phil prentice]

Hi 
  Last week I showed that I had a problem fixing the size of a lineEdit box 
inside the toolbar and Pradeep very kindly demonstrated the sort of thing 
that I am trying to do which works fine.  His example also worked for me, so 
I lifted out the code in my application that has the problem.  Basically it 
does not correctly show all the text inside a lineedit box even though I am 
trying to fix its size??  The version of QT that I am using is 4.2.1
Any comments most welcome....
Thanks

Phil

The code follows:-

#include <QApplication>
#include <QtGui>

class MainWindow : public QMainWindow
{
public:
    MainWindow( QWidget* parent = NULL )
        : QMainWindow( parent )
    {
      m_networkLabel = new QLabel("Network  ");
      m_networkLineEdit = new QLineEdit();
      // Set attributes.
      m_networkLineEdit->setReadOnly(true);
      m_networkLineEdit->setMaxLength(17); /* Allow max of 17 characters. */
      m_frequencyLineEdit = new QLineEdit();
      // Set attributes.
      m_frequencyLineEdit->setReadOnly(true);
      m_frequencyLineEdit->setMaxLength(6); /* Allow max of 6 characters. */
      m_frequencyLineEdit->setFixedWidth(
        m_frequencyLineEdit->fontMetrics().width("1500Hz") +20); // 1500Hz
      m_voltMinus = new QAction(this);
      //m_voltMinus->setIcon(QIcon(":/resources/images/V-.png"));
      m_voltMinus->setIcon(QIcon());
      m_voltPlus = new QAction(this);
      m_voltPlus->setIcon(QIcon());
      m_freqMinus = new QAction(this);
      m_freqMinus->setIcon(QIcon());
      m_freqPlus = new QAction(this);
      m_freqPlus->setIcon(QIcon());
      m_pulseVoltMinus = new QAction(this);
      m_pulseVoltMinus->setIcon(QIcon());
      m_pulseVoltPlus = new QAction(this);
      m_pulseVoltPlus->setIcon(QIcon());
      m_pulseWidthMinus = new QAction(this);
      m_pulseWidthMinus->setIcon(QIcon());
      m_pulseWidthPlus = new QAction(this);
      m_pulseWidthPlus->setIcon(QIcon());
      m_pcToleranceMinus10 = new QAction(this);
      m_pcToleranceMinus10->setIcon(QIcon());
      m_pcToleranceMinus1 = new QAction(this);
      m_pcToleranceMinus1->setIcon(QIcon());
      m_pcToleranceEnable = new QAction(this);
      m_pcToleranceEnable->setIcon(QIcon());
      m_pcTolerancePlus1 = new QAction(this);
      m_pcTolerancePlus1->setIcon(QIcon());
      m_pcTolerancePlus10 = new QAction(this);
      m_pcTolerancePlus10->setIcon(QIcon());
      QSize size(32,32);
      m_networkIdToolBar = addToolBar("");
      m_networkIdToolBar->addWidget(m_networkLabel);
      m_networkIdToolBar->addWidget(m_networkLineEdit);
      m_saveAction = new QAction("&Save", this);
      m_saveAction->setIcon(QIcon());
      m_saveToolBar = addToolBar("");
      m_voltFreqToolBar = addToolBar("");
      m_voltFreqToolBar->addAction(m_voltMinus);
      m_voltFreqToolBar->addAction(m_voltPlus);
      m_voltFreqToolBar->addSeparator();
      m_voltFreqToolBar->addAction(m_freqMinus);
      m_voltFreqToolBar->addAction(m_freqPlus);
      m_voltFreqToolBar->setIconSize(size);
      m_pulseToolBar = addToolBar("");
      m_pulseToolBar->addAction(m_pulseVoltMinus);
      m_pulseToolBar->addAction(m_pulseVoltPlus);
      m_pulseToolBar->addSeparator();
      m_pulseToolBar->addAction(m_pulseWidthMinus);
      m_pulseToolBar->addAction(m_pulseWidthPlus);
      m_pulseToolBar->setIconSize(size);
      m_toleranceToolBar = addToolBar("");
      m_toleranceToolBar->addAction(m_pcToleranceMinus10);
      m_toleranceToolBar->addAction(m_pcToleranceMinus1);
      m_toleranceToolBar->addSeparator();
      m_toleranceToolBar->addAction(m_pcToleranceEnable);
      m_toleranceToolBar->addSeparator();
      m_toleranceToolBar->addAction(m_pcTolerancePlus1);
      m_toleranceToolBar->addAction(m_pcTolerancePlus10);
      m_toleranceToolBar->setIconSize(size);
      m_frequencyToolBar = addToolBar("");
      m_frequencyToolBar->addWidget(m_frequencyLineEdit);
    }

    void foo()
    {
          m_networkLineEdit->setFixedWidth( 17 *
m_networkLineEdit->fontMetrics().maxWidth() + 20);
        m_networkLineEdit->setText("ZZZZZZZZZZZZZZZZZ");
    }

private:
    QToolBar *m_frequencyToolBar;
    QToolBar *m_networkIdToolBar;
    QToolBar *m_saveToolBar;
    QToolBar *m_voltFreqToolBar;
    QToolBar *m_pulseToolBar;
    QToolBar *m_toleranceToolBar;
    QAction *m_saveAction;
    QAction *m_voltMinus;
    QAction *m_voltPlus;
    QAction *m_freqMinus;
    QAction *m_freqPlus;
    QAction *m_pulseVoltMinus;
    QAction *m_pulseVoltPlus;
    QAction *m_pulseVoltPlus;
    QAction *m_pulseWidthMinus;
    QAction *m_pulseWidthPlus;
    QAction *m_pcToleranceMinus10;
    QAction *m_pcToleranceMinus1;
    QAction *m_pcToleranceEnable;
    QAction *m_pcTolerancePlus1;
    QAction *m_pcTolerancePlus10;

    QLineEdit* m_networkLineEdit;
    QLabel *m_networkLabel;
    QLineEdit           *m_frequencyLineEdit;

};
int main( int argc, char* argv[] )
{
    QApplication app( argc, argv );
    MainWindow mw;
    mw.resize(QSize(1260, 560));
    mw.show();
    mw.foo();
    return app.exec();
}

On Friday 24 September 2010 12:54, Pradeep K Vijayan wrote:
> Hi
>
> The below code worked for me with Qt 4.6.3:
>
> #include <QApplication>
> #include <QMainWindow>
> #include <QLineEdit>
> #include <QToolBar>
> #include <QLabel>
>
> class MainWindow : public QMainWindow
> {
> public:
>     MainWindow( QWidget* parent = NULL )
>
>         : QMainWindow( parent )
>
>     {
>           m_networkLineEdit = new QLineEdit( this );
>
>           // Set attributes.
>           m_networkLineEdit->setReadOnly(true);
>           m_networkLineEdit->setMaxLength(17); /* Allow max of 17
> characters. */
>
>           QToolBar* m_networkIdToolBar = addToolBar( "" );
>           m_networkIdToolBar->addWidget(new QLabel( "Blah:" ));
>           m_networkIdToolBar->addWidget(m_networkLineEdit);
>           m_networkIdToolBar->addWidget(new QLabel( "The end!" ));
>     }
>
>     void foo()
>     {
>           m_networkLineEdit->setFixedWidth( 17 *
> m_networkLineEdit->fontMetrics().maxWidth() + 20);
>     }
>
> private:
>     QLineEdit* m_networkLineEdit;
> };
>
> int main( int argc, char* argv[] )
> {
>     QApplication app( argc, argv );
>     MainWindow mw;
>     mw.resize( 600, 200 );
>     mw.show();
>     mw.foo();
>     return app.exec();
> }
>
> Regards,
> Pradeep K Vijayan
>
> On 24/09/2010 13:03, phil prentice wrote:
> > Hi everyone
> >
> >    I have a tool bar at the top of my window which has a QLineEdit box
> > inserted into it.  i.e.
> >
> >    m_networkLineEdit = new QLineEdit();
> >    // Set attributes.
> >    m_networkLineEdit->setReadOnly(true);
> >    m_networkLineEdit->setMaxLength(17); /* Allow max of 17 characters. */
> >
> >    m_networkIdToolBar = addToolBar("");
> >    m_networkIdToolBar->addWidget(m_networkLabel);
> >    m_networkIdToolBar->addWidget(m_networkLineEdit);
> >
> >    A number of other actions&  widgets are also in the toolbar.
> >
> >    I've also got separators in place as well.
> >
> >    My question is what determines the size of the lineedit box in the
> > toolbar. I've tryed various things like
> >
> >    m_networkLineEdit->setFixedWidth(
> >          17 * m_networkLineEdit->fontMetrics().maxWidth()+20);
> >
> >    to increase its size with no success.
> >
> >    I've tryed increasing the 17 characters to 30 odd as well and again no
> > success.
> >
> >    I know that I can drag the separator to make it bigger, but I would
> > like it to display all 17 characters.
> >
> >    To be honest I think I have a fonts problem of some sort, because when
> > I use wider screens, the same number of characters no longer fit in the
> > widgets; but thats another question.
> >
> > Thanks for your help
> > Phil
>
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