PyQt和上下文菜单
问题描述:
我需要创建一个上下文菜单,右键单击我的窗口。但我真的不知道如何实现这一点。PyQt和上下文菜单
是否有任何小工具,或者我必须从一开始创建它?
的编程语言:Python的
图形LIB的:Qt(PyQt的)
答
我不能蟒蛇说话,但它在C很容易++。
首先创建一个构件之后您将策略:
w->setContextMenuPolicy(Qt::CustomContextMenu);
,那么你的上下文菜单事件连接到一个插槽:
connect(w, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(ctxMenu(const QPoint &)));
最后,需要实现插槽:
void A::ctxMenu(const QPoint &pos) {
QMenu *menu = new QMenu;
menu->addAction(tr("Test Item"), this, SLOT(test_slot()));
menu->exec(w->mapToGlobal(pos));
}
这就是你如何在C++中完成它,在python API中不应该太差。
编辑:对谷歌四处寻找后,这里是在Python中我的例子中设置部分:
self.w = QWhatever();
self.w.setContextMenuPolicy(Qt.CustomContextMenu)
self.connect(self.w,SIGNAL('customContextMenuRequested(QPoint)'), self.ctxMenu)
答
它展示了如何使用在工具栏和上下文菜单操作另一个例子。
class Foo(QtGui.QWidget):
def __init__(self):
QtGui.QWidget.__init__(self, None)
mainLayout = QtGui.QVBoxLayout()
self.setLayout(mainLayout)
# Toolbar
toolbar = QtGui.QToolBar()
mainLayout.addWidget(toolbar)
# Action are added/created using the toolbar.addAction
# which creates a QAction, and returns a pointer..
# .. instead of myAct = new QAction().. toolbar.AddAction(myAct)
# see also menu.addAction and others
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)
self.actionDelete.setDisabled(True)
# Tree
self.tree = QtGui.QTreeView()
mainLayout.addWidget(self.tree)
self.tree.setContextMenuPolicy(Qt.CustomContextMenu)
self.connect(self.tree, QtCore.SIGNAL('customContextMenuRequested(const QPoint&)'), self.on_context_menu)
# Popup Menu is not visible, but we add actions from above
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))
注意,在PyQt4中,在包CustomContextMenu位置是在这里:PyQt4.QtCore.Qt.CustomContextMenu – 2010-12-27 17:08:50
爱是爱两年,19个upvotes后随机downvote :-P – 2011-09-24 01:48:49