2024-09-28 17:04:22 发布
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如何让一个QLineEdit在默认情况下未启用,但在接收到mouseDoubleClickEvent()时启用它?在
QLineEdit
mouseDoubleClickEvent()
如何实现mouseDoubleClickEvent()?在
当我尝试以下操作时,总是会出现“参数不足”的错误:
if self.MyQLineEdit.mouseDoubleClickEvent() == True: do something
不能使用以下语句设置该事件:
if self.MyQLineEdit.mouseDoubleClickEvent () == True:
有两种可能的选择:
import sys from PyQt4 import QtGui, QtCore class Widget(QtGui.QWidget): def __init__(self, *args, **kwargs): QtGui.QWidget.__init__(self, *args, **kwargs) self.le = QtGui.QLineEdit() lay = QtGui.QVBoxLayout(self) lay.addWidget(self.le) self.le.installEventFilter(self) def eventFilter(self, watched, event): if watched == self.le and event.type() == QtCore.QEvent.MouseButtonDblClick: print("pos: ", event.pos()) # do something return QtGui.QWidget.eventFilter(self, watched, event) if __name__ == '__main__': app = QtGui.QApplication(sys.argv) w = Widget() w.show() sys.exit(app.exec_())
不能使用以下语句设置该事件:
有两种可能的选择:
QLineEdit
继承:^{pr2}$
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