Why does clicking a QToolButton generate a leaveEvent? Is there a workaround?

[slobberchopz]

For some reason, whenever the menu-button part of the QToolButton gets clicked, it generates a momentary leaveEvent (at least when it is in a toolbar). I even tested underMouse() in the leaveEvent, and it returns false. Why is this? Is there a way to fix this?

Sample for testing:

from PyQt4.QtGui import *
 
class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        toolbar = QToolBar(self)
        toolbar.addWidget(ToolButton())
 
class ToolButton(QToolButton):
    def __init__(self, parent=None):
        super().__init__(parent)
 
        self.setText('test')
        self.setPopupMode(QToolButton.MenuButtonPopup)
        self.setMenu(QMenu())
        self.menu().addAction('Stub')
 
    def enterEvent(self, event):
        print('entered')
        super().enterEvent(event)
 
    def leaveEvent(self, event):
        print('left')
        super().leaveEvent(event)
 
if __name__ == '__main__':
    import sys
    application = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(application.exec_())

from PyQt4.QtGui import *

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        toolbar = QToolBar(self)
        toolbar.addWidget(ToolButton())

class ToolButton(QToolButton):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.setText('test')
        self.setPopupMode(QToolButton.MenuButtonPopup)
        self.setMenu(QMenu())
        self.menu().addAction('Stub')

    def enterEvent(self, event):
        print('entered')
        super().enterEvent(event)

    def leaveEvent(self, event):
        print('left')
        super().leaveEvent(event)

if __name__ == '__main__':
    import sys
    application = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(application.exec_())

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I'm using PyQt 4.10.1 Qt4.8.4 x64 with Py3.3.1 x64 with Win7

[folibis]

Right, you click on your button, it brings up the menu window and focus moved from button to menu

[slobberchopz]

Nope. Because a moment later it switches back to enterEvent(); and anyways, even if focus changed, the mouse didn't. leave/enterEvents reflect mouse position, not focus.

Well, I've found a way to avoid dealing with leave/enter that suits my needs. For anyone who does care, and who's PyQt version/setup presents such a problem, simply double check with QApplication.widgetAt(QCursor().pos()), that *does* return the correct info.