[Qt-interest] QScrollArea and size issue

[Matthieu Dazy]

Hi all,

I'm probably missing something obvious but I fail to understand why the
scrollarea contents are not displayed correctly with the sample code
below. I'd expect the grid layout to provide an adequate sizehint for
the scrollarea widget but it doesn't seem to be the case.

Any hints ?


void add( QGridLayout* gl, int i ) {
     gl->addWidget( new QLabel( "XXX" ), i, 0 );
     gl->addWidget( new QSpinBox, i, 1 );
     gl->addWidget( new QPushButton( "YYY" ), i, 2 );
}


int main( int argc, char** argv ) {
     QApplication a( argc, argv );

     QWidget* w = new QWidget;
     QVBoxLayout* vl = new QVBoxLayout( w );

     QScrollArea* sa = new QScrollArea;
     vl->addWidget( sa );

     QWidget* sa_contents = new QWidget;
     sa->setWidget( sa_contents );

     QGridLayout* gl = new QGridLayout( sa_contents );
     gl->addWidget( new QLabel( "AAA" ), 0, 0 );
     gl->addWidget( new QLabel( "BBB" ), 0, 1 );
     gl->addWidget( new QLabel( "CCC" ), 0, 2 );
     add( gl, 1 );
     add( gl, 2 );
     add( gl, 3 );

     vl->addStretch( 1 );

     QPushButton* p = new QPushButton( "&Quit" );
     vl->addWidget( p );
     QObject::connect( p, SIGNAL( clicked() ), qApp, SLOT( quit() ) );

     w->show();

     return a.exec();
}
-- 
Matthieu Dazy (matthieu.dazy at pdgm.com) -- tel. +33 (0)3 83 67 66 19
Paradigm, Nancy -- http://www.pdgm.com

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