Qt and context menu

Question

Hello, i need to create a context menu on right clicking at my window. But i really don't know what should i do. Are there any widgets or i must make it by my hands? Programming language: Python Graphical lib: Qt (PyQt).

Answer 1

It is possible, but usually more of a problematic feature. I've tried this before, and found it's much easier to have a Menu bar with buttons.

Answer 2

I can't speak for python, but it's fairly easy in C++.

first after creating the widget you set the policy:

w->setContextMenuPolicy(Qt::CustomContextMenu);

then you connect the context menu event to a slot:

connect(w, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(ctxMenu(const QPoint &)));

Finally, you implement the slot:

void A::ctxMenu(const QPoint &pos) {
    QMenu *menu = new QMenu;
    menu->addAction(tr("Test Item"), this, SLOT(test_slot()));
    menu->exec(w->mapToGlobal(pos));
}

that's how you do it in c++ , shouldn't be too different in the python API.

EDIT: after looking around on google, here's the setup portion of my example in python:

self.w = QWhatever();
self.w.setContextMenuPolicy(Qt.CustomContextMenu)
self.connect(self.w,SIGNAL('customContextMenuRequested(QPoint)'), self.ctxMenu)

Answer 3

Another example which shows how to use actions in a toolbar and context menu.

class Foo( QtGui.QWidget ):

    def __init__(self):
        QtGui.QWidget.__init__(self, None)

        # Toolbar
        toolbar = QtGui.QToolBar()

        # Actions
        self.actionAdd = toolbar.addAction("New", self.on_action_add)
        self.actionEdit = toolbar.addAction("Edit", self.on_action_edit)
        self.actionDelete = toolbar.addAction("Delete", self.on_action_delete)

        # Tree
        self.tree = QtGui.QTreeView()
        self.tree.setContextMenuPolicy( Qt.CustomContextMenu )
        self.connect(self.tree, QtCore.SIGNAL('customContextMenuRequested(const QPoint&)'), self.on_context_menu)

        # Popup Menu
        self.popMenu = QtGui.QMenu( self )
        self.popMenu.addAction( self.actionEdit )
        self.popMenu.addAction( self.actionDelete )
        self.popMenu.addSeparator()
        self.popMenu.addAction( self.actionAdd )

    def on_context_menu(self, point):
         self.popMenu.exec_( self.tree.mapToGlobal(point) )