C++ QComboBox::sizeHint方法代码示例

FlightController::FlightController(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::FlightController), mm(NULL)
{
    ui->setupUi(this);
    ui->mainPanel->setCurrentIndex(0);
    connect(ui->ClearButton, SIGNAL(clicked()), ui->LogViewport, SLOT(clearButtonClick()));
    connect(ui->CopyAllButton, SIGNAL(clicked()), ui->LogViewport, SLOT(copyAllButtonClick()));
    connect(ui->RedButton, SIGNAL(toggled(bool)), this, SLOT(redButtonToggle(bool)));
    connect(ui->BootloaderButton, SIGNAL(clicked()), this, SLOT(bootloaderButtonClick()));
    connect(ui->MatrixMonitorButton, SIGNAL(clicked()), this, SLOT(matrixMonitorButtonClick()));
    connect(ui->statusRequestButton, SIGNAL(clicked()), this, SLOT(statusRequestButtonClick()));
    DeviceInterface &di = Singleton<DeviceInterface>::instance();
    di.setLogger(ui->LogViewport);
    di.start();
    connect(this, SIGNAL(sendCommand(uint8_t,uint8_t)), &di, SLOT(sendCommand(uint8_t, uint8_t)));
    ui->ColumnMapping->setLayout(new QHBoxLayout());
    for (uint8_t i = 0; i<16; i++)
    {
        QComboBox *b = new QComboBox();
        b->addItem(0, "Skip");
        b->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
        b->sizeHint().setWidth(0);
        ui->ColumnMapping->layout()->addWidget(b);
        columns[i] = b;
    }

    ui->RowMapping->setLayout(new QGridLayout());
}

CProperties::CProperties( QWidget* parent, const char* name, HODBCINSTPROPERTY hTheFirstProperty )
	: QMainWindow( parent, name, 0 )
{
    HODBCINSTPROPERTY 	hProperty;
	int				    nProperty;

    pMainWidget     = new QWidget( this );
    setCentralWidget( pMainWidget );

	pTopLayout		= new QVBoxLayout( pMainWidget );

    // SETUP TOOLBAR
    toolbarMain = new QToolBar( this );
    addToolBar( toolbarMain, tr( "ToolBar" ), Top, FALSE );
    new QToolButton( QPixmap( checkOk_xpm ), QString(tr("Save and Exit")), QString(""), this, SLOT(pbOk_Clicked()), toolbarMain );
    new QToolButton( QPixmap( checkCancel_xpm ), QString(tr("Cancel any changes and Exit")), QString(""), this, SLOT(pbCancel_Clicked()), toolbarMain );
    QWhatsThis::whatsThisButton ( toolbarMain );

	/* PROPERTIES */
    hFirstProperty = hTheFirstProperty;
	for ( nProperties = 0, hProperty = hFirstProperty; hProperty != NULL; hProperty = hProperty->pNext )
	{
		nProperties++;
	}

	pGridLayout = new QGridLayout( nProperties, 2, 2 );
	pTopLayout->addLayout( pGridLayout );
	pGridLayout->setColStretch ( 0, 0 );
	pGridLayout->setColStretch ( 1, 1 );

	for ( nProperty = 0, hProperty = hFirstProperty; hProperty != NULL; nProperty++, hProperty = hProperty->pNext )
	{
        QLabel *pLabel = new QLabel( pMainWidget );
		// 1ST COLUMN IS ALWAYS A LABEL CONTAINING THE PROPERTY NAME
        if ( hProperty->nPromptType != ODBCINST_PROMPTTYPE_HIDDEN )
        {
            if ( hProperty->pszHelp )
                QWhatsThis::add( pLabel, hProperty->pszHelp );
            pLabel->setLineWidth( 1 );
            pLabel->setText( hProperty->szName );
            pLabel->setMinimumSize( pLabel->sizeHint() );
            pLabel->setFixedHeight( pLabel->sizeHint().height() );
            pGridLayout->addWidget( pLabel, nProperty, 0 );
        }

		// 2ND COLUMN IS WHERE THE USER ENTERS DATA SO CREATE A WIDGET THAT IS MEANINGFULL
		switch ( hProperty->nPromptType )
		{
		case ODBCINST_PROMPTTYPE_LABEL:
			{
				QLabel *pLabel2 = new QLabel( pMainWidget );
                if ( hProperty->pszHelp )
                    QWhatsThis::add( pLabel2, hProperty->pszHelp );
				pLabel2->setFrameStyle( QFrame::Box | QFrame::Sunken );
				pLabel2->setLineWidth( 1 );
				pLabel2->setText( hProperty->szValue );
				pLabel2->setMinimumSize( pLabel2->sizeHint() );
				pLabel2->setFixedHeight( pLabel2->sizeHint().height() );
				pGridLayout->addWidget( pLabel2, nProperty, 1 );
                hProperty->pWidget = pLabel2;
                if ( hProperty->pszHelp ) QToolTip::add( pLabel2, hProperty->pszHelp );
			}
			break;
		case ODBCINST_PROMPTTYPE_LISTBOX:
			{
				QComboBox *pComboBox = new QComboBox( pMainWidget );
                if ( hProperty->pszHelp )
                    QWhatsThis::add( pComboBox, hProperty->pszHelp );
				pComboBox->insertStrList( (const char **)hProperty->aPromptData );
				pComboBox->setMinimumSize( pComboBox->sizeHint() );
				pComboBox->setFixedHeight( pComboBox->sizeHint().height() );
				pGridLayout->addWidget( pComboBox, nProperty, 1 );
                hProperty->pWidget = pComboBox;
                if ( hProperty->pszHelp ) QToolTip::add( pComboBox, hProperty->pszHelp );
                setCurrentItem( pComboBox, hProperty->szValue );
            }
			break;
		case ODBCINST_PROMPTTYPE_COMBOBOX:
			{
				QComboBox *pComboBox = new QComboBox( true, pMainWidget );
                if ( hProperty->pszHelp )
                    QWhatsThis::add( pComboBox, hProperty->pszHelp );
				pComboBox->insertStrList( (const char **)hProperty->aPromptData );
                pComboBox->setEditText( hProperty->szValue );
				pComboBox->setMinimumSize( pComboBox->sizeHint() );
				pComboBox->setFixedHeight( pComboBox->sizeHint().height() );
				pGridLayout->addWidget( pComboBox, nProperty, 1 );
                hProperty->pWidget = pComboBox;
                if ( hProperty->pszHelp ) QToolTip::add( pComboBox, hProperty->pszHelp );
			}
			break;
		case ODBCINST_PROMPTTYPE_FILENAME:
			{
                CFileSelector *pFileSelector = new CFileSelector( pMainWidget );
                if ( hProperty->pszHelp )
                    QWhatsThis::add( pFileSelector, hProperty->pszHelp );
				pFileSelector->pLineEdit->setText( hProperty->szValue );
				pGridLayout->addWidget( pFileSelector, nProperty, 1 );
                hProperty->pWidget = pFileSelector;
                if ( hProperty->pszHelp ) QToolTip::add( pFileSelector, hProperty->pszHelp );
//.........这里部分代码省略.........

void
fixComboBoxViewWidth(QComboBox &comboBox) {
  comboBox.setSizeAdjustPolicy(QComboBox::AdjustToContents);
  comboBox.view()->setMinimumWidth(comboBox.sizeHint().width());
}

VW::VW( QWidget * parent, const char * name )
    : QWidget( parent, name )
{
    QHBoxLayout * hb;

    hb = new QHBoxLayout( this, 10 );

    QGroupBox * box;
    box = new QGroupBox( this, "input box" );
    hb->addWidget( box, 0, AlignTop );

    QVBoxLayout * b;

    // set up the input box
    b = new QVBoxLayout( box, 12 );

    QLabel * l = new QLabel( "Enter Vehicle Details", box, "header" );
    l->setMinimumSize( l->sizeHint() );
    b->addWidget( l );
    QFrame * f = new QFrame( box, "horizontal divider" );
    f->setFrameStyle( QFrame::HLine | QFrame::Sunken );
    f->setMinimumHeight( 12 );
    b->addWidget( f );

    QGridLayout *grid = new QGridLayout( 3, 2 );
    b->addLayout( grid );

    // here we start on the input grid, with labels and other widget
    // neatly arranged. the variable names are reused all over the
    // place.

    QComboBox * model = new QComboBox( FALSE, box, "model selection" );
    model->insertItem( "Type 1 Beetle" );
    model->insertItem( "Camper" );
    model->insertItem( "Van" );
    model->insertItem( "Fastback" );
    model->insertItem( "Squareback" );
    model->insertItem( "Notchback" );
    model->insertItem( "411" );
    model->setCurrentItem( model->count() - 1 ); // I like the 411
    currentModel = "411";
    model->insertItem( "412" );
    model->insertItem( "Karmann Ghia" );
    model->insertItem( "Thing" );
    model->insertItem( "Safari" );
    model->insertItem( "Kubelwagen" );
    model->insertItem( "Trekker" );
    model->insertItem( "Baja" );
    model->setMinimumSize( model->sizeHint() );
    model->setMaximumHeight( model->minimumSize().height() );
    grid->addWidget( model, 0, 1 );

    l = new QLabel( model, "Model:", box, "model label" );
    l->setMinimumSize( l->sizeHint() );
    grid->addWidget( l, 0, 0 );

    QSpinBox * motor = new QSpinBox( 1000, 1600, 100, 
				     box, "motor size selection" );
    motor->setValue( 1000 );
    currentMotorSize = 1000;
    motor->setMinimumSize( motor->sizeHint() );
    motor->setMaximumHeight( motor->minimumSize().height() );
    grid->addWidget( motor, 1, 1 );

    l = new QLabel( motor, "Motor size (cc):", box, "motor size label" );
    l->setMinimumSize( l->sizeHint() );
    grid->addWidget( l, 1, 0 );

    QSpinBox * year = new QSpinBox( box, "model year" );
    year->setRange( 1949, 1981 );
    year->setValue( 1949 );
    currentYear = 1949;
    year->setMinimumSize( year->sizeHint() );
    year->setMaximumHeight( year->minimumSize().height() );
    grid->addWidget( year, 2, 1 );

    l = new QLabel( year, "Model:", box, "model year label" );
    l->setMinimumSize( l->sizeHint() );
    grid->addWidget( l, 2, 0 );

    b->addStretch( 1 );

    b->activate();

    // output box

    box = new QGroupBox( this, "output box" );
    hb->addWidget( box, 0, AlignTop );

    b = new QVBoxLayout( box, 12 );

    l = new QLabel( "Resulting Limousine:", box, "header" );
    l->setMinimumSize( l->sizeHint() );
    b->addWidget( l );

    f = new QFrame( box, "horizontal divider" );
    f->setFrameStyle( QFrame::HLine | QFrame::Sunken );
    f->setMinimumHeight( 12 );
    b->addWidget( f );

//.........这里部分代码省略.........