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POReducing the size of a QMdiSubWindow holding a QLabel with QPixmap
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Id
19064006
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19064796
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1
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CommentCount
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CreationDate
2013-09-28T06:19:47.760
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2013-09-28T08:04:54.773
LastEditDate
2013-09-28T06:37:56.927
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953125
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PostTypeId
1
Score
-1
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295
LastEditorDisplayName
text
Body
<p>The question statement says it all. I am able to enlarge the QMdiSubWindow (and the pixmap scales UP, i.e. enlarges, appropriately) but I am not able to reduce its size (i.e. scale the image DOWN or shrink). When trying to scale down though, the border handles of the QMdiSubWindow remain rigidly fixed.</p> <p>The code I am using is as follows:</p> <pre><code>class PixmapWidget : public QLabel { Q_OBJECT public: PixmapWidget(): QLabel() { _pixmap = QPixmap("path\\to\\image.jpg"); setPixmap(_pixmap); _layout = new QHBoxLayout(); _layout->setSizeConstraint(QLayout::SetNoConstraint); setLayout(_layout); setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred)); } void resizeEvent(QResizeEvent * event) { int width = event->size().width(); int height = event->size().height(); setPixmap(_pixmap.scaled(width,height)); QLabel::resizeEvent(event); } protected: QPixmap _pixmap; QHBoxLayout* _layout; }; int main() { QMainWindow mainWindow; QHBoxLayout* layout = new QHBoxLayout(); QMdiArea* mdiArea = new QMdiArea(); mainWindow.setCentralWidget(mdiArea); mainWindow.centralWidget()->setLayout(layout); layout->setSizeConstraint(QLayout::SetNoConstraint); QMdiSubWindow* mdiSubWindow = new QMdiSubWindow(); layout->addWidget(mdiSubWindow); mdiSubWindow->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred)); mdiSubWindow->layout()->setSizeConstraint(QLayout::SetNoConstraint); DMSQt::PixmapWidget pixmapWidget; mdiSubWindow->layout()->addWidget(&pixmapWidget); mainWindow.show(); qapp.exec(); } </code></pre>
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<qt>
Title
Reducing the size of a QMdiSubWindow holding a QLabel with QPixmap
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