pyqt5_控件_gridLayout_模拟登陆窗体

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sys


class Example(QWidget):
    _startPos = None
    _endPos = None
    _isTracking = False
    _Menu = None
    def __init__(self):
        super(Example, self).__init__()
        self._initUI()

    def _initUI(self):

        self.setWindowFlags(Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint)  # 无边框并置顶
        self.setWindowIcon(QIcon('./timg.jpg'))
        self.resize(400, 300)
        # 初始化背景
        self.label = QLabel(self)
        self.label.setGeometry(0, 0, self.width(), self.height() // 2)
        self.label.setAutoFillBackground(True)
        palete = QPalette()
        palete.setColor(QPalette.Window, QColor(Qt.gray))
        self.label.setPalette(palete)
        # 登录窗口模拟

        self.gridParent = QWidget(self)
        self.gridParent.setGeometry(110, 180, 160, 98)
        # self.gridParent.setStyleSheet('border: 1px solid red')
        self.gridLayout = QGridLayout(self.gridParent)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        commonFont = QFont()
        commonFont.setPointSize(8)
        commonFont.setFamily('微软雅黑')
        userLabel = QLabel(self.gridParent)
        userLabel.setText('用户名:')
        userLabel.setFont(commonFont)
        self.gridLayout.addWidget(userLabel, 0, 0, 1, 1)

        userEdit = QLineEdit(self.gridParent)
        userEdit.setPlaceholderText('输入用户名')
        userEdit.setFont(commonFont)
        self.gridLayout.addWidget(userEdit, 0, 1, 1, 1)

        pwdLabel = QLabel(self.gridParent)
        pwdLabel.setText('密   码:')
        pwdLabel.setFont(commonFont)
        self.gridLayout.addWidget(pwdLabel, 1, 0, 1, 1)

        pwdEdit = QLineEdit(self.gridParent)
        pwdEdit.setPlaceholderText('输入密码')
        pwdEdit.setFont(commonFont)
        self.gridLayout.addWidget(pwdEdit, 1, 1, 1, 1)

        loginBtn = QPushButton(self.gridParent)
        loginBtn.setText('登录服务器')
        loginBtn.setFont(commonFont)
        # 设置背景色，按钮的用调色板竟然不行，只能用样式表
        loginBtn.setStyleSheet('background-color: rgb(193,210,240);'
                               'border-radius:4px;'
                               'color:white;'
                               )
        loginBtn.setFixedSize(118, 22)
        self.gridLayout.addWidget(loginBtn, 2, 1, 1, 1)

        moreFuncs = QLabel(self.gridParent)
        moreFuncs.setText('<a href=\'http:\'>更多功能</a>')
        moreFuncs.setFont(commonFont)
        moreFuncs.setAlignment(Qt.AlignRight)
        moreFuncs.setContextMenuPolicy(Qt.CustomContextMenu)  # 禁用菜单
        moreFuncs.customContextMenuRequested.connect(self._customContextMenu)  # 自定义菜单信号
        self.moreFun = moreFuncs
        self.gridLayout.addWidget(moreFuncs, 3, 1, 1, 1)
        self.show()

    def _customContextMenu(self, pos: QPoint):
        if not self._Menu:
            self._Menu = QMenu(self)
            self._Menu.addAction('打开')
            self._Menu.addAction('保存')
            self._Menu.addAction('退出')
            self._Menu.triggered.connect(self._menu_choose_event)  #选择事件
        self._Menu.exec(self.moreFun.mapToGlobal(pos))
    def _menu_choose_event(self, e:QAction):
        print(e.text())
    def mouseMoveEvent(self, e: QMouseEvent):  # 重写移动事件
        if self._isTracking:
            self._endPos = e.pos() - self._startPos
            self.move(self.pos() + self._endPos)

    def mousePressEvent(self, e: QMouseEvent):
        if e.button() == Qt.LeftButton:
            self._isTracking = True
            self._startPos = QPoint(e.x(), e.y())

    def mouseReleaseEvent(self, e: QMouseEvent):
        if e.button() == Qt.LeftButton:
            self._isTracking = False
            self._startPos = None
            self._endPos = None


if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec())

# 效果图