[英]How to connect QLineEdit focusOutEvent
I have designed a window with a QLineEdit
in PyQt4 with the help of Designer. 我在Designer的帮助下在PyQt4中设计了一个带有QLineEdit
的窗口。 I converted .ui
to .py
using pyuic4
. 我使用pyuic4
将.ui
转换为.py
。 I created another .py
file and imported and subclassed Ui_Class
. 我创建了另一个.py
文件并导入和子类化了Ui_Class
。
I want to perform some task when QLineEdit
lost focus. 我想在QLineEdit
失去焦点时执行一些任务。
Just line button clicked event i to connect QLineEdit
Lost focus event 只需按行按钮点击事件i即可连接QLineEdit
Lost焦点事件
Use an eventFilter
: 使用eventFilter
:
class Filter(QtCore.QObject):
def eventFilter(self, widget, event):
# FocusOut event
if event.type() == QtCore.QEvent.FocusOut:
# do custom stuff
print 'focus out'
# return False so that the widget will also handle the event
# otherwise it won't focus out
return False
else:
# we don't care about other events
return False
And in your window: 在你的窗口:
# ...
self._filter = Filter()
# adjust for your QLineEdit
self.ui.lineEdit.installEventFilter(self._filter)
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