[Qt-interest] How to force parent layout to recalculate when minimumSizeHint changes

[Malyushytsky, Alex]

Try

void QWidget::updateGeometry ()

Notifies the layout system that this widget has changed and may need to change geometry.
Call this function if the sizeHint() or sizePolicy() have changed.
For explicitly hidden widgets, updateGeometry() is a no-op. The layout system will be notified as soon as the widget is shown.


Regards,
   Alex Malyushytsky

-----Original Message-----
From: qt-interest-bounces at trolltech.com [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Tony Rietwyk
Sent: Monday, February 16, 2009 6:42 PM
To: qt-interest at trolltech.com
Subject: [Qt-interest] How to force parent layout to recalculate when minimumSizeHint changes

Hi Everybody,

I have a widget that is derived from QFrame.  The minimumSizeHint method depends on a property that can be set in QtDesigner.  When the property value changes, the widget does not change to reflect the new value for the size hint.  How can I force the parent's layout to recalculate when the property changes?  I tried adjustSize, but it doesn't work:


QSize TChordFrame::minimumSizeHint() const
{
        if (FJazz)
                return QSize( ANSWER_BOX_WIDTH_JAZZ, ANSWER_BOX_HEIGHT_JAZZ );
        else
                return QSize( ANSWER_BOX_WIDTH_FB, ANSWER_BOX_HEIGHT_FB );
}

void TChordFrame::setJazz(bool value)   // Property setter
{
        FJazz = value;
        adjustSize();
        repaint();
}


Thanks in advance!

Tony.


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