小编Cam*_*ina的帖子

我一直在尝试使用python3和Qt4从现有窗口调用一个新窗口.

我使用Qt Designer(主应用程序和另一个)创建了两个窗口,我将Qt Designer生成的.ui文件转换为.py脚本 - 但我似乎无法从主应用程序创建新窗口.

我试过这样做:

############### MAIN APPLICATION SCRIPT ################

from PyQt4 import QtCore, QtGui
import v2

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    _fromUtf8 = lambda s: s

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName(_fromUtf8("Form"))
        Form.resize(194, 101)
        self.button1 = QtGui.QPushButton(Form)
        self.button1.setGeometry(QtCore.QRect(50, 30, 99, 23))
        self.button1.setObjectName(_fromUtf8("button1"))

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

    def retranslateUi(self, Form):
        Form.setWindowTitle(QtGui.QApplication.translate("Form", "Form", None, QtGui.QApplication.UnicodeUTF8))
        self.button1.setText(QtGui.QApplication.translate("Form", "Ventana", None, QtGui.QApplication.UnicodeUTF8))

        self.button1.connect(self.button1, QtCore.SIGNAL(_fromUtf8("clicked()")), self.mbutton1)

    def mbutton1(self):
        v2.main()



if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    Form = QtGui.QWidget()
    ui = Ui_Form() …

我有这个问题.我试图在pyqt4上的lineEdit对象上设置文本,然后等待几秒钟并更改相同lineEdit的文本.为此,我使用time.sleep()python Time模块上给出的函数.但我的问题是,不是设置文本,然后等待并最终重写lineEdit上的文本,它只是等待它应该睡觉的时间,只显示最终文本.我的代码如下:

from PyQt4 import QtGui
from gui import *

class Ventana(QtGui.QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.setupUi(self)
        self.button.clicked.connect(self.testSleep)

    def testSleep(self):
        import time   
        self.lineEdit.setText('Start')
        time.sleep(2)
        self.lineEdit.setText('Stop')        

    def mainLoop(self, app ):
        sys.exit( app.exec_())

if __name__ == '__main__':
    import sys
    app = QtGui.QApplication(sys.argv)
    window = Ventana()
    window.show()
    sys.exit(app.exec_())