我正在测试Qlabel的更新。我基本上有问题以随机顺序显示,但标签的旧文本仍然显示并与新文本组合。我不确定如何在' OK'之间清除它。点击次数。
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import sys
import random
class GameDialog(QDialog):
def __init__(self):
QDialog.__init__(self)
layout = QGridLayout()
lblWBS = QLabel("lblWBS")
lblDialog = QLabel("lblDialog")
btnOK = QPushButton("OK")
layout.addWidget(btnOK, 5, 1)
def randomOptions():
rdmOpt = [2,3,4]
random.shuffle(rdmOpt)
optGreen = QRadioButton()
optYellow = QRadioButton()
optRed = QRadioButton()
lblGreen = QLabel("Green")
lblYellow = QLabel("Yellow")
lblRed = QLabel("Red")
layout.addWidget(lblWBS, 0, 1)
layout.addWidget(lblDialog, 1, 1)
layout.addWidget(optGreen, rdmOpt[0], 0)
layout.addWidget(lblGreen, rdmOpt[0], 1)
layout.addWidget(optYellow, rdmOpt[1], 0)
layout.addWidget(lblYellow, rdmOpt[1], 1)
layout.addWidget(optRed, rdmOpt[2], 0)
layout.addWidget(lblRed, rdmOpt[2], 1)
self.setLayout(layout)
randomOptions()
btnOK.clicked.connect(randomOptions)
self.setWindowTitle("PALCDMS")
app = QApplication(sys.argv)
dialog = GameDialog()
dialog.show()
app.exec_()
答案 0 :(得分:0)
实现您的想法的方法是您有错误,因为您正在创建新对象。
您应该保存一个将更改位置的小部件列表,并在进行更改之前使用removeWidget()
删除它们,然后将它们放回布局中。
class GameDialog(QDialog):
def __init__(self):
QDialog.__init__(self)
layout = QGridLayout(self)
lblWBS = QLabel("lblWBS")
lblDialog = QLabel("lblDialog")
btnOK = QPushButton("OK")
layout.addWidget(btnOK, 5, 1)
optGreen = QRadioButton()
optYellow = QRadioButton()
optRed = QRadioButton()
lblGreen = QLabel("Green")
lblYellow = QLabel("Yellow")
lblRed = QLabel("Red")
layout.addWidget(lblWBS, 0, 1)
layout.addWidget(lblDialog, 1, 1)
l = [optGreen, lblGreen, optYellow, lblYellow, optRed, lblRed]
def randomOptions():
for w in l:
layout.removeWidget(w)
rdmOpt = [2,3,4]
random.shuffle(rdmOpt)
for i in range(len(l)):
layout.addWidget(l[i], rdmOpt[i//2], i % 2)
randomOptions()
btnOK.clicked.connect(randomOptions)
self.setWindowTitle("PALCDMS")