<p>你可以试试<a href="https://doc.qt.io/qt-5/qapplication.html#setStyle" rel="nofollow noreferrer">setting the style of your QApplication</a>。在我的Windows计算机上,只有Fusion样式显示下划线</p>
<p>我从菜单中的表单…预览中获得了Qt Designer的样式名称。Linux或Mac可能有不同的可用样式</p>
<p><a href="https://i.stack.imgur.com/OFFiD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OFFiD.png" alt="enter image description here"/></a></p>
<p>守则:</p>
<pre><code>from PyQt5 import uic, QtCore, Qt
from PyQt5.QtWidgets import (QApplication, QMainWindow, QMessageBox,
QStyleFactory)
form_class = uic.loadUiType('qstyle.ui')[0]
class MainWindow(QMainWindow, form_class):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent=parent)
self.setupUi(self)
self.setWindowTitle("QMessageBox Style Test")
verString = 'PyQt version: ' + Qt.PYQT_VERSION_STR + '\n'
verString += 'Qt version: ' + QtCore.qVersion()
self.lblVersion.setText(verString)
@QtCore.pyqtSlot(int)
def on_bgrpRadio_buttonClicked(self, button):
global app
# style name is lower case version of objectName with rdb removed
style_name = self.bgrpRadio.checkedButton().objectName()
style_name = style_name.replace('rdb', '').lower()
print(style_name)
app.setStyle(QStyleFactory.create(style_name))
@QtCore.pyqtSlot()
def on_btnMessageBox_clicked(self):
buttonReply = QMessageBox.question(
None, 'Exit', "Quit Program?",
QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
if __name__ == '__main__':
app = QApplication([])
win = MainWindow()
win.show()
app.exec_()
</code></pre>
<p>qstyle.ui:</p>
<pre><code><?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>410</width>
<height>340</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralwidget">
<layout class="QGridLayout" name="gridLayout_2">
<item row="0" column="0">
<widget class="QGroupBox" name="groupBox">
<property name="title">
<string>QWindowsStyle</string>
</property>
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0">
<widget class="QRadioButton" name="rdbPlastique">
<property name="text">
<string>plastique</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="1" column="0">
<widget class="QRadioButton" name="rdbGTK">
<property name="text">
<string>gtk</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="0" column="2">
<widget class="QRadioButton" name="rdbMacintosh">
<property name="text">
<string>macintosh</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="0" column="1">
<widget class="QRadioButton" name="rdbWindowsXP">
<property name="text">
<string>windowsxp</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="2" column="1">
<widget class="QRadioButton" name="rdbWindows">
<property name="text">
<string>windows</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="1" column="1">
<widget class="QRadioButton" name="rdbWindowsVista">
<property name="text">
<string>windowsvista</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="3" column="2">
<widget class="QRadioButton" name="rdbFusion">
<property name="text">
<string>fusion</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="1" column="2">
<widget class="QRadioButton" name="rdbCDE">
<property name="text">
<string>cde</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="2" column="0">
<widget class="QRadioButton" name="rdbCleanLooks">
<property name="text">
<string>cleanlooks</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
<item row="2" column="2">
<widget class="QRadioButton" name="rdbMotif">
<property name="text">
<string>motif</string>
</property>
<attribute name="buttonGroup">
<string notr="true">bgrpRadio</string>
</attribute>
</widget>
</item>
</layout>
</widget>
</item>
<item row="1" column="0">
<widget class="QComboBox" name="comboBox"/>
</item>
<item row="2" column="0">
<widget class="QPushButton" name="btnMessageBox">
<property name="text">
<string>MessageBox</string>
</property>
</widget>
</item>
<item row="3" column="0">
<widget class="QLabel" name="lblVersion">
<property name="text">
<string>TextLabel</string>
</property>
</widget>
</item>
</layout>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>410</width>
<height>36</height>
</rect>
</property>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<resources/>
<connections/>
<buttongroups>
<buttongroup name="bgrpRadio"/>
</buttongroups>
</ui>
</code></pre>