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POResizing child widget with keeping aspect ratio when parent widget resized
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2013-10-07T10:48:23.140
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2013-10-07T12:39:53.200
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2017-05-23T12:10:56.950
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Body
I have four widgets in a <code>QWidgets</code> named <code>FourWindowWidget</code> I am trying to put these four widgets in FourWindowWidget as one at top and remaining under that while the top one should always have 70% of the size of FourWindowWidget. I tried following : <pre><code>QSize size = ui->FourWindowWidget->size(); ui->View1->setFixedHeight(size.height()*0.70); QHBoxLayout * lay = new QHBoxLayout(); lay->addWidget(ui->View2); lay->addWidget(ui->View3); lay->addWidget(ui->View4); lay->setMargin(0); lay->setContentsMargins(0,0,0,0); QGridLayout * mainlay = new QGridLayout; mainlay->addWidget(ui->View1,0,0); mainlay->setContentsMargins(0,0,0,0); mainlay->setHorizontalSpacing(0); mainlay->setSpacing(0); mainlay->setMargin(0); mainlay->addLayout(lay,1,0); delete ui->FourWindowWidget->layout(); ui->FourWindowWidget->setLayout(mainlay); this->update(); </code></pre> Now the problem is now View1 have fixed size but size of FourWindowWidget is not fixed. It changes when I remove any other widget around it like closing dock widget. This resize is expected, or say I don't want to make it fixed. So when ever FourWindowWidget get resized its child widgets should be as per ratio set. But I am unable to do this cause 1. There is no any signal that inform resize so the height of internal widget will be calculated. 2. No other way I found to set 70% height of top widget rather than setFixedHeight in grid layout. I have tried with setting QSizePolicy to setHieghtForWidth but iit is not a working solution. Please suggest me to do this by any way. <hr> The Question is kind of duplicat of <a href="https://stackoverflow.com/questions/17013984/resizing-qt-widgets-based-on-window-size">Resizing Qt Widgets based on Window size</a> but there nobody answered.
Tags
<qt><qt4><qwidget><qt4.8>
Title
Resizing child widget with keeping aspect ratio when parent widget resized
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