When I drag the edge to a certain extent, the central QDockWidget is hidden. I recorded the screen when i operated this Qt Demo wrote by me. The recording screen video link is as follow:
development environment: QT5 & Qt Creator 4.6.1 & Win10
There is two .ui files, one is the mainwindow.ui ,another is the secondmainwindow.ui.
mainwindow.cpp constructor function:
ui->setupUi(this);
ui->mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
ui->mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
QMdiSubWindow *subWindow = ui->mdiArea->addSubWindow(new SecondMainwindow());
// hide title
subWindow->setWindowFlags(Qt::FramelessWindowHint);
subWindow->showMaximized();
//
setCentralWidget(ui->mdiArea);
//
setDockNestingEnabled(true);
secondmainwindow.cpp constructor function:
ui->setupUi(this);
//
QWidget* p = takeCentralWidget();
if(p) {
delete p;
p = nullptr;
}
the all QDockWidget are generated by the Qt Designer software, And all parameters are default with QDockWidget. so, Are there some details I didn't notice? Thanks.
