PyQt经过resize改变窗体大小时ListWidget显示异常

　　

 

 

　　前几天开始的pygame音乐播放器Doco,作的差很少了,上午作到了歌词显示和搜索页面.遇到bug,即经过resize改变ui大小时ListWidget显示异常

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#目的:

　　增长一部分窗口用来显示歌词和搜索页面.也就是在原来播放器的基础上经过resize增长窗口宽度,而后增长相应的内容.

#test

　　因为Doco代码过于臃肿,笔者来一个test来描述上午遇到的问题吧.

首先,欲改变ui宽度,则想到resize

Test.resize(852, 714) #设置高和宽
Test.setFixedSize(852, 714) #设置调整宽和高

#测试代码:

　　来个test的完整代码:

 

# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'Test.ui' # # Created: Sun Apr 2 21:46:12 2017 # by: PyQt5 UI code generator 5.2.1 # # WARNING! All changes made in this file will be lost!


#code by dearvee
import sys from PyQt5 import QtCore, QtGui, QtWidgets class Ui_Test(object): def setupUi(self, Test): Test.setObjectName("Test") Test.resize(852, 714) Test.setFixedSize(852, 714) self.lineEdit = QtWidgets.QLineEdit(Test) self.lineEdit.setGeometry(QtCore.QRect(150, 20, 200, 41)) self.lineEdit.setObjectName("lineEdit") self.listWidget = QtWidgets.QListWidget(Test) self.listWidget.setGeometry(QtCore.QRect(0, 140, 420, 421)) self.listWidget.setObjectName("listWidget") self.toolButton = QtWidgets.QToolButton(Test,clicked=lambda:self._resize(Test)) self.toolButton.setGeometry(QtCore.QRect(0, 20, 41, 41)) self.toolButton.setObjectName("toolButton") self.retranslateUi(Test) QtCore.QMetaObject.connectSlotsByName(Test) def retranslateUi(self, Test): _translate = QtCore.QCoreApplication.translate Test.setWindowTitle(_translate("Test", "Test")) self.toolButton.setText(_translate("Test", "<")) def _resize(self,Test): Test.resize(420, 714)#420, 714
        Test.setFixedSize(420, 714) if __name__ == '__main__': app = QtWidgets.QApplication(sys.argv) Form = QtWidgets.QWidget() ui = Ui_Test() ui.setupUi(Form) Form.show() sys.exit(app.exec_())

如今当点击<按钮,则Test的宽度减小,功能实现.

#运行效果:

#发现bug:

　　点击<按钮后宽度变小,但listwidget颜色变成了黑色,当鼠标移入时,恢复正常,这固然不是想要的效果,笔者暂时还不知道形成这种状况的缘由所在.

 

#debug:

　　网上粗略的找了一下,没有找到相同问题的解决办法.尝试在<按钮上,增长刷新listwidget事件,成功解决问题.

self.listWidget.clear()#清空list

固然,这里笔者用的listwidget为空表,直接clear便可,若是里面有item,亦刷新便可.

下面debug后完整代码:

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'Test.ui' # # Created: Sun Apr 2 21:46:12 2017 # by: PyQt5 UI code generator 5.2.1 # # WARNING! All changes made in this file will be lost!

import sys from PyQt5 import QtCore, QtGui, QtWidgets class Ui_Test(object): def setupUi(self, Test): Test.setObjectName("Test") Test.resize(852, 714) Test.setFixedSize(852, 714) self.lineEdit = QtWidgets.QLineEdit(Test) self.lineEdit.setGeometry(QtCore.QRect(150, 20, 200, 41)) self.lineEdit.setObjectName("lineEdit") self.listWidget = QtWidgets.QListWidget(Test) self.listWidget.setGeometry(QtCore.QRect(0, 140, 420, 421)) self.listWidget.setObjectName("listWidget") self.toolButton = QtWidgets.QToolButton(Test,clicked=lambda:self._resize(Test)) self.toolButton.setGeometry(QtCore.QRect(0, 20, 41, 41)) self.toolButton.setObjectName("toolButton") self.retranslateUi(Test) QtCore.QMetaObject.connectSlotsByName(Test) def retranslateUi(self, Test): _translate = QtCore.QCoreApplication.translate Test.setWindowTitle(_translate("Test", "Test")) self.toolButton.setText(_translate("Test", "<")) def _resize(self,Test): Test.resize(420, 714)#420, 714
        Test.setFixedSize(420, 714) self.listWidget.clear()#清空list
        
if __name__ == '__main__': app = QtWidgets.QApplication(sys.argv) Form = QtWidgets.QWidget() ui = Ui_Test() ui.setupUi(Form) Form.show() sys.exit(app.exec_())

运行此程序,成功解决了问题.

至此,关于上午遇到的 listwidget以resize改变窗体宽度时显示异常问题的解决办法叙述完毕.

 

 

来一个音乐播放器Doco的截图,暂时尚未找到合适的素材,有点丑Q_Q: