Info about some technics in Qt

[Cobra91151]

Hi! I want to know:

1. How to make QSizeGrip placed to the right bottom corner?
2. How to make the context menu available to the full application?

Thanks in advance.

[patrik08]

Inside zip from https://github.com/pehohlva/Tiny_Edit/tree/master/tests
is a sample from a QCommandLinkButton only swap to normal button ...

  _EpubStart = new StartMenuButton();
    _EpubStart->setMenu(menuTocEpub);
    statusBar()->addWidget(_EpubStart);
    statusBar()->setSizeGripEnabled(false);

Limit QMenu in one time to display is 30 pieces...

[Cobra91151]

@patrik08

Hi! Thanks, but I don't have QStatusBar to display QSizeGrip.

I have added QSizeGrip to QGridLayout:

QSizeGrip *sizeGrip = new QSizeGrip(this);
QGridLayout *sizeGripLayout = new QGridLayout();
sizeGripLayout->setContentsMargins(QMargins());
sizeGripLayout->setSpacing(0);
sizeGripLayout->addWidget(sizeGrip, 0, 0, 1, 1, Qt::AlignBottom | Qt::AlignRight);

and add QGridLayout to QVBoxLayout (main layout).

But it adds to much space at the bottom.

[patrik08]

Or any QWidget have
http://doc.qt.io/qt-4.8/qwidget.html#contextMenuPolicy-prop
to place menu..

QDialog *dialog = new QDialog(0, Qt::FramelessWindowHint);
QVBoxLayout *layout = new QVBoxLayout(dialog);

// To remove any space between the borders and the QSizeGrip...      
layout->setContentsMargins(QMargins());         
// and between the other widget and the QSizeGrip
layout->setSpacing(0);
layout->addWidget(new QTextEdit(dialog));

// The QSizeGrip position (here Bottom Right Corner) determines its
// orientation too
layout->addWidget(new QSizeGrip(dialog), 0, Qt::AlignBottom | Qt::AlignRight);

dialog->show();

[Cobra91151]

@patrik08

Ok. I have changed code to:

QVBoxLayout *sizeGripLayout = new QVBoxLayout();
sizeGripLayout->setContentsMargins(QMargins());
sizeGripLayout->setSpacing(0);
sizeGripLayout->addWidget(new QSizeGrip(mainWindow), 0, Qt::AlignBottom | Qt::AlignRight); //mainWindow - QWidget

But the same extra space exists at the bottom:

Also, I have context menu in contextMenuEvent for example in A how to extend it to B? Setting this->setContextMenuPolicy(Qt::CustomContextMenu); at B will not display the context menu from A. Do I need to create the global class to manage context menu everywhere?

[Cobra91151]

In QHBoxLayout I have set setContentsMargins(10, 10, 10, 0); - bottom to 0, so:

I think, it's better, but one problem, when application is maximized, there is no space at the bottom. Should I change setContentsMargins at event or there is other solution?

[patrik08]

Debug your item for margin and cast element so:

     QObjectList mx = this->children();
      QList<QObject*>::const_iterator x;
      for (x = mx.constBegin(); x != mx.constEnd(); ++x) {
        QObject *fox = *x;
           qDebug() << "name:" << fox->objectName();
           QWidget *vox = qobject_cast<QWidget *>(fox);
           if (vox) {
              qDebug() << "size element:" << vox->size() << ":" << vox->accessibleName();

           }
      }

[Cobra91151]

@patrik08

Thanks, but I have changed Qt event and the problem with QSizeGrip has been fixed. The only think now is to create global menu.

[SGaist]

Hi,

Do you mean QMainWindow's menuBar ?

[Cobra91151]

I have fixed all issues. Thank you.