- 比如我这段代码中的一些设置，设置文字、居中、禁止复制、LineEdit输入为password等等

import sys

from PyQt5.QtCore import Qt

from PyQt5.QtWidgets import QFrame

from PyQt5.QtWidgets import QLabel

from PyQt5.QtWidgets import QWidget

from PyQt5.QtWidgets import QLineEdit

from PyQt5.QtWidgets import QTextEdit

from PyQt5.QtWidgets import QSizePolicy

from PyQt5.QtWidgets import QMainWindow

from PyQt5.QtWidgets import QPushButton

from PyQt5.QtWidgets import QGridLayout

from PyQt5.QtWidgets import QApplication

from View import interface

class MainWindow(QMainWindow):

def __init__(self):

super(MainWindow,self).__init__(None)

self.setWindowTitle("对金属腐蚀性试验仪")

self.initUI()

def initUI(self):

layout = QGridLayout()

layout.setSpacing(10)

self.loginLabel = QLabel("用户名：")

self.loginLabel.setAlignment(Qt.AlignRight)

self.loginLabel.setStyleSheet("color:rgb(20,20,20,255);font-size:16px;font-weight:bold:text")

self.loginTxt = QLineEdit()

self.loginTxt.setText("admin")

self.loginTxt.setPlaceholderText("User Name")

self.loginTxt.setClearButtonEnabled(True)

self.pwdLabel = QLabel("密码：")

self.pwdLabel.setAlignment(Qt.AlignRight)

self.pwdTxt = QLineEdit()

self.pwdTxt.setContextMenuPolicy(Qt.NoContextMenu) #禁止复制粘贴

self.pwdTxt.setPlaceholderText("Password")

self.pwdTxt.setText("admin")

self.pwdTxt.setEchoMode(QLineEdit.Password)

self.pwdTxt.setClearButtonEnabled(True)

self.registeredBtn = QPushButton("注册")

self.loginBtn = QPushButton("登陆")

self.headLabel = QLabel("用户登陆")

self.headLabel.resize(300,30)

self.headLabel.setAlignment(Qt.AlignCenter)

self.headLabel.setStyleSheet("color:rgb(10,10,10,255);font-size:25px;font-weight:bold;font-family:Roman times;")

self.headLabel.setSizePolicy(QSizePolicy.Expanding,QSizePolicy.Expanding)

layout.addWidget(self.headLabel,0,0,1,2)

policy = self.headLabel.sizePolicy()

print(policy.verticalPolicy())

policy.setVerticalPolicy(1)

print(policy.verticalPolicy())

# policy.setVerticalPolicy(1)

layout.addWidget(self.loginLabel,1,0)

layout.addWidget(self.loginTxt,1,1)

layout.addWidget(self.pwdLabel,2,0)

layout.addWidget(self.pwdTxt,2,1)

layout.addWidget(self.registeredBtn,3,0)

layout.addWidget(self.loginBtn,3,1)

frame = QFrame(self)

frame.setLayout(layout)

self.setCentralWidget(frame)

self.resize(300,150)

if __name__ == '__main__':

app = QApplication(sys.argv)

mainWindow = MainWindow()

mainWindow.show()

mainWindow.activateWindow()

mainWindow.raise_()

app.exec_()

del mainWindow

del app

inputMask设置掩码 text 设置文本 maxLength文本框输入的最大字符数 frame 设置边框 echoMode 设置文本框显示格式 Normal正常显示所输入的字符，此为默认选项 NoEcho不显示任何输入的字符，常用于密码类型的输入，且长度保密 Password显示与平台相关的密码掩饰字符，而不是实际输入的字符 PasswordEchoOnEdit在编辑时显示字符，负责显示密码类型的输入 cursorPosition光标位置 alignment文本对齐方式 AlignLeft左对齐 AlignRight右对齐 AlignCenter水平居中对齐 AlignJustify水平方向调整间距两端对齐 AlignTop垂直上对齐 AlignBottom垂直方下对齐 AlignVCenter垂直方向居中对齐 dragEnabled设置文本框是否接受拖动 readOnly设置文本为只读 placeholderText设置文本框提示文字 cursorMoveStyle光标移动风格 LogicalMoveStyle逻辑风格 VisualMoveStyle视觉风格 clearButtonEnabled快速删除按钮

参考文章,QLineEdit属性、信号、方法等

setAlignment(self, Union, Qt_Alignment=None,Qt_AlignmentFlag=None): 设置字体对齐方式

参数

作用

AlignAbsolute=16

AlignBaseline=256

AlignBottom=64

底端对齐

AlignCenter=132

完全居中

AlignHCenter=4

水平居中

AlignHorizontal_Mask=31

AlignJustify=8

可用空间对齐

AlignLeading=1

领头对齐(理解为左对齐吧)

AlignLeft=1

左对齐

AlignRight=2

右对齐

AlignTop=32

上对齐

AlignTrailing=2

尾对齐(右对齐

AlignVCenter=128

垂直居中

setClearButtonEnabled(self, bool): 是否有清除文本按钮(如我第一段程序文本框后的 小黑X)

setCompleter(self, QCompleter):设置自动补全QLineEdit自动补全

setCursorMoveStyle(self, Qt_CursorMoveStyle):

setCursorPosition(self, p_int):

setDragEnabled(self, bool):

setEchoMode(self, QLineEdit_EchoMode):

setFrame(self, bool):

setInputMask(self, p_str):

setMaxLength(self, p_int):

setModified(self, bool):

setPlaceholderText(self, p_str):

setReadOnly(self, bool):

setSelection(self, p_int, p_int_1):

setText(self, p_str):

setTextMargins(self, *__args):

setValidator(self, QValidator):