Im designing a Pyside Qt application and I want to toggle the QtCore.Qt.WindowStaysOnTopHint window flag in my main window. Setting this hint using this code works fine:
self.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint)
self.show()
but I can't work out how to remove a window flag using Pyside.
Does anybody know how to do this?
UPDATE:
As of Qt-5.9, there's now a simple convenience API that does exactly what the original solution below does (see setWindowFlag [singular]):
# add a flag to the existing flags
self.setWindowFlag(QtCore.Qt.WindowStaysOnTopHint, True)
...
# remove a flag from the existing flags
self.setWindowFlag(QtCore.Qt.WindowStaysOnTopHint, False)
...
# re-show the window
self.show()
Note that the last line is always necessary, since re-setting the window flags will also reset the widget's parent - which means the widget must be made visible again by explicitly re-showing it (see windowFlags).
Of course, you can still use setWindowFlags [plural], to set and unset multiple flags using the bitwise operators.
ORIGINAL SOLUTION:
Window flags would normally be OR'd together with the existing flags:
print(int(self.windowFlags()))
self.setWindowFlags(self.windowFlags() | QtCore.Qt.WindowStaysOnTopHint)
print(int(self.windowFlags()))
Then to remove the flag, AND it out using the flag's negation:
self.setWindowFlags(self.windowFlags() & ~QtCore.Qt.WindowStaysOnTopHint)
print(int(self.windowFlags()))