Capture drag and drop events when moving QDockWidget
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I'm attempting to create a system where I can drag and drop QDockWidgets into a central QTabWidget.
Unfortunately I've hit a road block. Is there a way to capture the drag/drop events from moving a QDockWidget within my QTabWidget. I haven't had any success.
Obviously, QMainWindow is able to recognize QDockWidgets. I need to write a QTabWidget to do the same.
Edit: Below is my simple attempt at trying to catch the drop event in my debugger.
@
// My simple main window for testing.
FormMain::FormMain(QWidget* parent) : QMainWindow(parent)
{
this->setGeometry(80, 80, 800, 600);auto wTab = new TabWidget(); auto wLeftDock = new QDockWidget(); wLeftDock->setStyleSheet("background-color:red"); auto wRightDock = new QDockWidget(); wRightDock->setStyleSheet("background-color:blue"); auto wTopDock = new QDockWidget(); wTopDock->setStyleSheet("background-color:green"); auto wBottomDock = new QDockWidget(); wBottomDock->setStyleSheet("background-color:yellow"); this->setCentralWidget(wTab); this->addDockWidget(Qt::LeftDockWidgetArea, wLeftDock); this->addDockWidget(Qt::RightDockWidgetArea, wRightDock); this->addDockWidget(Qt::TopDockWidgetArea, wTopDock); this->addDockWidget(Qt::BottomDockWidgetArea, wBottomDock);}
// My simple tab widget for testing
TabWidget::TabWidget(QWidget* parent) : QTabWidget(parent)
{
this->setAcceptDrops(true);
this->installEventFilter(this);
}void TabWidget::dragEnterEvent(QDragEnterEvent* event)
{
// Break point here.
event->acceptProposedAction();
}void TabWidget::dropEvent(QDropEvent* event)
{
// Break point here.
event->acceptProposedAction();
}bool TabWidget::eventFilter(QObject* obj, QEvent* event)
{if(event->type() == QEvent::Type::MouseButtonRelease) { // Break point here. auto dummy = 2 + 3; } return this->QTabWidget::eventFilter(obj, event);}
@None of my break points are hit when I attempt to drag a QDockWidget from it's docked location to the center tab widget.
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Hi,
What did you try ?
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Sorry, updated my post with my test code.
My idea is to drag a qdockwidget over to a qtabwidget and when a drop event occurs, set the contents of the qdockwidget into a new tab on the qtabwidget.
Then, i also want to be able to drag a "tab" from the tab widget which will immediately convert it back to a qdockwidget which can then be dropped back into a docking location on the qmainwindow.
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The drag and drop of QDockWidgets is specially handled in QMainWindow so you won't have any drop in your QTableView from it. You'd need to take a look at QMainWindow source code to replicate the functionality
