Qt 多窗体、复用窗口的使用

1.继承自QWidge的窗口的呈现，作为tabPage呈现，作为独立窗口呈现

2.继承自QMainWindow的窗口的呈现，作为abPage呈现，作为独立窗口呈现

1. 继承自QWidge的窗口的呈现

1.1 作为tabPage呈现

void MutiWindowExample::on_actWidgetInsite_triggered()
{
    TFormDoc *form = new TFormDoc(this);
    //关闭时 自动删除  释放
    form->setAttribute(Qt::WA_DeleteOnClose);
    int cur= ui->tabWidget->addTab(form,QString::asprintf("Doc %d",ui->tabWidget->count()));
    ui->tabWidget->setVisible(true);
    connect(form,&TFormDoc::titleChanged,this,&MutiWindowExample::do_changeTabTitle);
}

1.2 作为独立窗口呈现

void MutiWindowExample::on_actWidget_triggered()
{
    TFormDoc *form = new TFormDoc(this);
    //关闭时 自动删除  释放
    form->setAttribute(Qt::WA_DeleteOnClose);
    form->setWindowTitle("基于Widget的窗口，无父窗口，关闭时删除释放");
    //设置成window 窗口标识
    form->setWindowFlag(Qt::Window,true);
    form->setWindowOpacity(0.9);
    //独立窗口显示
    form->show();
}

2. 继承自QMainWindow的窗口的呈现

2.1 作为tabPage呈现

void MutiWindowExample::on_actWindowInsite_triggered()
{
    CustomDialogExample *form = new CustomDialogExample(this);
    form->setAttribute(Qt::WA_DeleteOnClose);//关闭立即释放
    int cur = ui->tabWidget->addTab(form,QString::asprintf("Table %d",ui->tabWidget->count()));
    ui->tabWidget->setCurrentIndex(cur);
    ui->tabWidget->setVisible(true);
}

2.2 作为独立窗口呈现

void MutiWindowExample::on_actWindow_triggered()
{
    CustomDialogExample *form = new CustomDialogExample(this);
    form->setAttribute(Qt::WA_DeleteOnClose);//关闭立即释放
    form->setWindowTitle("基于QMainWindow的窗口");
    form->statusBar();
    form->show();
}

效果