如何在pyqt4中使用qss？

Question

任何人都可以告诉我如何使用pyqt4的qss文件？我尝试在QT的官方文档中更改QTdesigner中的样式表，如this，但它不起作用。我不确定它是否应该对pyqt有效。我发现this question但我没有得到那个意思。任何人都可以告诉我如何详细处理或给我链接文档？

Answer 1

您可以在设计器或代码中更改Qt中的样式表。 如果你想加载一个qss文件并将一个样式表设置为一个小部件，你只需要读取文件并将样式表中的相关内容放入样式表中，它就可以工作（当然文件必须位于正确的ofrmat中）。

例子：

style_file.qss

QLineEdit{border-style: solid; 
     border-width: 1px; 
     border-radius: 5px; 
     border-color: rgb(125,125,125); 
     background-color: rgba(255, 134, 134, 150);} 

加载在上面你的Python文件的文件和应用与样式：

qss_file = open('style_file.qss').read() 
    ui.your_line_edit_control.setStyleSheet(qss_file) 

如果您想通过编辑样式表QtDesigner，只需把

QLineEdit{border-style: solid; 
     border-width: 1px; 
     border-radius: 5px; 
     border-color: rgb(125,125,125); 
     background-color: rgba(255, 134, 134, 150);} 

在控制

右键点击你的控制中选择“编辑样式表”

注：此风格只会工作窝QLineEdit的，像在风格code..but指定当然也可以使用相同的方式为所有部件（QToolButton，QLabel等儿子..）

Answer 2

QSS文件代码

QWidget { 
    background-color: #222222; 
} 

QLineEdit { 
    background-color: aliceblue; 
    color: #618b38; 
    font-style: italic; 
    font-weight: bold; 
} 

QLabel { 
    background-color: #222222; 
    color: #618b38; 
} 

QPushButton { 
    background-color: #8b0000; 
    color: #ffffff; 
    border-radius: 5px; 
    border-style: none; 
    height: 25px; 
} 

代码GUI

from PyQt5 import QtCore, QtWidgets 

__author__ = "Psycho_Coder" 


# noinspection PyUnresolvedReferences 
class MainUiWindow(object): 

    def __init__(self): 

     #Main Window 
     self.centralwidget = QtWidgets.QWidget(MainWindow) 

     """ 
     Using Grid Layouts for Widgets Alignment 
     """ 
     #Grid Layout for Main Grid Layout 
     self.maingrid_layout = QtWidgets.QGridLayout(self.centralwidget) 

     #Grid Layout for Result Section Layout 
     self.resultgird = QtWidgets.QGridLayout() 

     #Grid Layout for Information section 
     self.infogrid = QtWidgets.QGridLayout() 

     #Grid Layout for holding all the widgets in place 
     self.outergrid = QtWidgets.QGridLayout() 

     #Button to clear all test input 
     self.clearall = QtWidgets.QPushButton(self.centralwidget) 

     #Button to show the final result by append 
     self.showres = QtWidgets.QPushButton(self.centralwidget) 

     #Horizontal layout to hold the result section horizontally 
     self.horizontal_layout = QtWidgets.QHBoxLayout() 

     """ 
     Show results widgets 
     """ 
     self.fullname = QtWidgets.QLabel(self.centralwidget) 
     self.result = QtWidgets.QLabel(self.centralwidget) 

     """ 
     Get Names info section 
     """ 
     self.firstname = QtWidgets.QLabel(self.centralwidget) 
     self.lastname = QtWidgets.QLabel(self.centralwidget) 

     #TextBox to get user input 
     self.fname = QtWidgets.QLineEdit(self.centralwidget) 
     self.lname = QtWidgets.QLineEdit(self.centralwidget) 

    def init_gui(self, MainWindow): 

     MainWindow.setObjectName("MainWindow") 

     MainWindow.setStyleSheet(open("style.qss", "r").read()) 
     MainWindow.setAutoFillBackground(True) 
     MainWindow.resize(328, 166) 

     self.centralwidget.setObjectName("centralwidget") 

     self.maingrid_layout.setObjectName("maingrid_layout") 
     self.outergrid.setObjectName("outergrid") 
     self.infogrid.setObjectName("infogrid") 

     self.firstname.setObjectName("firstname") 
     self.infogrid.addWidget(self.firstname, 0, 0, 1, 1) 

     self.fname.setObjectName("fname") 
     self.infogrid.addWidget(self.fname, 0, 1, 1, 1) 

     self.lastname.setObjectName("lastname") 
     self.infogrid.addWidget(self.lastname, 1, 0, 1, 1) 

     self.lname.setObjectName("lname") 
     self.infogrid.addWidget(self.lname, 1, 1, 1, 1) 

     self.outergrid.addLayout(self.infogrid, 0, 0, 1, 1) 

     self.fullname.setObjectName("fullname") 

     self.result.setMaximumSize(QtCore.QSize(140, 16777215)) 
     self.result.setObjectName("result") 

     self.resultgird.setObjectName("resultgird") 
     self.resultgird.addWidget(self.fullname, 0, 0, 1, 1) 
     self.resultgird.addWidget(self.result, 0, 1, 1, 1) 

     self.outergrid.addLayout(self.resultgird, 1, 0, 1, 1) 

     self.showres.setObjectName("showres") 
     self.clearall.setObjectName("clearall") 

     self.horizontal_layout.setObjectName("horizontal_layout") 
     self.horizontal_layout.addWidget(self.showres) 
     self.horizontal_layout.addWidget(self.clearall) 

     self.outergrid.addLayout(self.horizontal_layout, 2, 0, 1, 1) 
     self.maingrid_layout.addLayout(self.outergrid, 0, 0, 1, 1) 

     MainWindow.setCentralWidget(self.centralwidget) 

     self.retranslate_gui(MainWindow) 

     #Add signals of clear to LineEdit widgets to clear the texts 
     self.clearall.clicked.connect(self.result.clear) 
     self.clearall.clicked.connect(self.lname.clear) 
     self.clearall.clicked.connect(self.fname.clear) 
     self.showres.clicked.connect(self.__name) 

     QtCore.QMetaObject.connectSlotsByName(MainWindow) 

    def __name(self): 
     name = self.fname.text() + " " + self.lname.text() 
     self.result.setText("" + name + "") 

    def retranslate_gui(self, MainWindow): 
     _translate = QtCore.QCoreApplication.translate 

     MainWindow.setWindowTitle(_translate("MainWindow", "Name Concatenation")) 
     self.lastname.setText(_translate("MainWindow", "Last Name :")) 
     self.firstname.setText(_translate("MainWindow", "First Name :")) 
     self.fullname.setText(_translate("MainWindow", "Concatenated Name :-")) 
     self.result.setText(_translate("MainWindow", "")) 
     self.showres.setText(_translate("MainWindow", "Show Name!")) 
     self.clearall.setText(_translate("MainWindow", "Clear All")) 

if __name__ == "__main__": 
    import sys 
    app = QtWidgets.QApplication(sys.argv) 
    MainWindow = QtWidgets.QMainWindow() 
    ui = MainUiWindow() 
    ui.init_gui(MainWindow) 

    MainWindow.show() 
    sys.exit(app.exec_()) 

参考

https://codehackersblog.blogspot.com/2015/10/python-simple-pyqt5-gui-example-with-qss.html