Question

通过将内置QLineEdit设为“双击”来定义自定义小部件：

class Clickable_LineEdit(QtGui.QLineEdit):

    def __init__(self, type, parent=None):
        super(DCLineEdit, self).__init__(parent)

    def mouseDoubleClickEvent(self, event):
        print "CLICK"

现在，我可以使用此“自定义” Clickable_LineEdit 小部件来填充主对话框窗口。一切正常。但每次双击发生时，它都会在主对话框窗口类的外部注册...意味着所有main_dialog类的变量，所有留下的数据都不能用于 Clickable_LineEdit 类实例。

我想知道是否可以在不离开主对话框类的情况下从LineEdit获取doubleClick功能。

稍后编辑：以下是来自以下帖子的修改示例：

from PyQt4 import QtCore, QtGui


class Clickable_LineEdit(QtGui.QLineEdit):

    def __init__(self, parent=None):
        super(QtGui.QLineEdit, self).__init__(parent)

    def mouseDoubleClickEvent(self, event):
        print "CLICK"

class Ui_Dialog(QtGui.QWidget):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(348, 195)
        self.lineEdit = Clickable_LineEdit(Dialog)
        self.lineEdit.setGeometry(QtCore.QRect(50, 40, 113, 20))
        self.lineEdit.setObjectName("lineEdit")

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle(QtGui.QApplication.translate("Dialog", "Dialog", None,     QtGui.QApplication.UnicodeUTF8))

    def runOnDoubleClick(self):
        print "DOUBLE CLICK"       

import sys
def main():

    app = QtGui.QApplication(sys.argv)
    ex = Ui_Dialog()
    ex.setupUi(ex)
    ex.show()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

我在“Ui_Dialog（）”类下添加了一个“ runOnDoubleClick ”函数我想在每次双击self.lineEdit小部件时运行（而不是mouseDoubleClickEvent（）函数）。如何实现？

Answer 1

嗯，根据我的理解，你想要一个lineEdit，当lineEdit被双击时，它会感知一个双击信号。

from PyQt4 import QtCore, QtGui


class Clickable_LineEdit(QtGui.QLineEdit):

    def __init__(self, parent=None):
        super(QtGui.QLineEdit, self).__init__(parent)

    def mouseDoubleClickEvent(self, event):
        print "CLICK"

class Ui_Dialog(QtGui.QWidget):
    def setupUi(self, Dialog):
        Dialog.setObjectName(_fromUtf8("Dialog"))
        Dialog.resize(348, 195)
        self.lineEdit = Clickable_LineEdit(Dialog)
        self.lineEdit.setGeometry(QtCore.QRect(50, 40, 113, 20))
        self.lineEdit.setObjectName(_fromUtf8("lineEdit"))

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle(QtGui.QApplication.translate("Dialog", "Dialog", None,     QtGui.QApplication.UnicodeUTF8))

import sys
def main():

    app = QtGui.QApplication(sys.argv)
    ex = Ui_Dialog()
    ex.setupUi(ex)
    ex.show()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()

这似乎对我有用。

Python PyQt扩展内置小部件

1 个答案: