Qt – Close Widget Window if mouse clicked outside of it

This is sort of a chicken and egg problem. I'd like my widget window to be closed when the mouse clicks outside. As I understand it, there will be no mouse events for my widget for a click occurring outside of it. There is a SetFocus slot, but where is its counterpart or focus loss? "focusOutEvent" doesn't get called for my class.

My widget window is a child window of a widget always shown on my main window and it's a "Qt::ToolTip", so I assume some problems could arise from that fact. Any way around that?

My Goal: I have a custom toolbar widget where buttons on it may have “drop down” widgets. These drop down widgets have no standard windows frame. I don’t want them to “steal” caption focus from the main window and I want them to disappear as soon as the user clicks ANYWHERE on the screen outside of their region. I have having serious difficulties finding a strategy that’s not compromise on Qt to get this done.

Am I missing something? (bet I am).

Best Answer

I used:

setWindowFlags(Qt::FramelessWindowHint | Qt::Popup);

This seems to work well on OSX and Windows. My window appears correctly, does not steal the focus from my main window's caption, and the focus loss event is called correctly as soon as I click outside of it.

Related Solutions

Qt – When I send or post a QMouseEvent, at the position of a QPushbutton, its clicked() signal is not emitted

So, do I get that right? When doing your "click-gesture" you come into keyPressEvent? If so, you can check whether the "click" has been done above the button and explicitly call the button's clicked() signal. But that's not what you want?

And what exactly is QWebViewButtons? The area the user does his gestures in?

Have you debugged into the keyPressEvent to see if your sendEvent has the correct widget (w)? I can't see why the widget should not recieve the event...

And remember that when new'ing a QMouseEvent and sending it via sendEvent is is never deleted. When using sendEvent you should create your event on the stack.

Maybe you should have a look at this thread, where a QTestEventList is recommended: Mimicking/faking a Mouse Click and Mouse Wheel using Qt. But I can imagine that you don't want test functions do the trick ;)

Python – PyQt add a scrollbar to MainWindow

There are several things wrong with the example code. The main problems are that you are not using layouts properly, and the content widget is not being added to the scroll-area.

Below is a fixed version (the commented lines are all junk, and can be removed):

def setupUi(self, Interface):
    # Interface.setObjectName("Interface")
    # Interface.resize(1152, 1009)
    # sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
    # sizePolicy.setHorizontalStretch(0)
    # sizePolicy.setVerticalStretch(0)
    # sizePolicy.setHeightForWidth(Interface.sizePolicy().hasHeightForWidth())
    # Interface.setSizePolicy(sizePolicy)
    # Interface.setMouseTracking(False)
    # icon = QtGui.QIcon()
    self.centralWidget = QtWidgets.QWidget(Interface)
    # self.centralWidget.setObjectName("centralWidget")
    layout = QtWidgets.QVBoxLayout(self.centralWidget)

    self.scrollArea = QtWidgets.QScrollArea(self.centralWidget)
    # self.scrollArea.setGeometry(QtCore.QRect(0, 0, 1131, 951))
    # self.scrollArea.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
    # self.scrollArea.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
    # self.scrollArea.setWidgetResizable(True)
    # self.scrollArea.setObjectName("scrollArea")
    # self.scrollArea.setEnabled(True)
    layout.addWidget(self.scrollArea)

    self.scrollAreaWidgetContents = QtWidgets.QWidget()
    self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 1112, 932))
    # self.scrollAreaWidgetContents.setObjectName("scrollAreaWidgetContents")

    self.scrollArea.setWidget(self.scrollAreaWidgetContents)

    layout = QtWidgets.QHBoxLayout(self.scrollAreaWidgetContents)
    # self.horizontalLayout.setObjectName("horizontalLayout")
    # add child widgets to this layout...        

    Interface.setCentralWidget(self.centralWidget)

Best Answer

Related Solutions

Qt – When I send or post a QMouseEvent, at the position of a QPushbutton, its clicked() signal is not emitted

Python – PyQt add a scrollbar to MainWindow

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