QSignalBlocker#

Exception-safe wrapper around blockSignals() . More…

Synopsis#

Functions#

def __enter__ ()
def __exit__ (arg__1, arg__2, arg__3)
def reblock ()
def unblock ()

Detailed Description#

QSignalBlocker can be used wherever you would otherwise use a pair of calls to blockSignals(). It blocks signals in its constructor and in the destructor it resets the state to what it was before the constructor ran.

blocker = QSignalBlocker(someQObject)
# no signals here

is thus equivalent to

wasBlocked = someQObject.blockSignals(True)
# no signals here
someQObject.blockSignals(wasBlocked)

except the code using QSignalBlocker is safe in the face of exceptions.

See also

QMutexLocker QEventLoopLocker

class PySide6.QtCore.QSignalBlocker(o)#

PySide6.QtCore.QSignalBlocker(o)

Parameters: o – PySide6.QtCore.QObject

This is an overloaded function.

Calls object.blockSignals(true).

Constructor. Calls object->blockSignals(true).

PySide6.QtCore.QSignalBlocker.__enter__()#

Return type: PySide6.QtCore.QSignalBlocker

PySide6.QtCore.QSignalBlocker.__exit__(arg__1, arg__2, arg__3)#

Parameters

arg__1 – object
arg__2 – object
arg__3 – object

PySide6.QtCore.QSignalBlocker.reblock()#

Re-blocks signals after a previous unblock() .

The numbers of reblock() and unblock() calls are not counted, so every reblock() undoes any number of unblock() calls.

PySide6.QtCore.QSignalBlocker.unblock()#

Temporarily restores the signalsBlocked() state to what it was before this QSignalBlocker ‘s constructor ran. To undo, use reblock() .

The numbers of reblock() and unblock() calls are not counted, so every unblock() undoes any number of reblock() calls.