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PyQt5教程(十二)——实现QQ登录界面(五、实现鼠标拖动界面,鼠标事件)
一、实现界面可以随着鼠标进行拖动 1、主要就是对鼠标事件的实现: def mousePressEvent(self, event): if event.button() == Qt.LeftButton: self.m_flag = True self.m_Position = event.globalPos() - self.pos() # 获取鼠标相对窗口的位置 event.accept() self.setCursor(QCursor(Qt.OpenHandCursor)) # 更改鼠标图标 def mouseMoveEvent(self, QMouseEvent): if Qt.LeftButton and self.m_flag: self.move(QMouseEvent.globalPos() - self.m_Position) # 更改窗口位置 QMouseEvent.accept() def mouseReleaseEvent(self, QMouseEvent): self.m_flag = False self.setCursor(QCursor(Qt.ArrowCursor))事件是由程序内部或外部产生的事情或某种动作的通称。比如用户按下键盘或鼠标,就会产生一个键盘事件或鼠标事件(这是由程序外部产生的事件);再如,当窗口第一次显示时,会产生一个绘制事件,以通知窗口需要重新绘制其自身,从而使该窗口可见(这是由程序内部产生的事件)。 2、logicQQ.py中添加鼠标事件的代码: import sys from PyQt5.QtWidgets import QApplication, QLabel, QPushButton, QHBoxLayout from PyQt5.QtCore import Qt, QSize from QQLogin import Ui_Dialog from PyQt5.Qt import QWidget from PyQt5.QtGui import QIcon, QPixmap, QMovie, QCursor import image_rc class QSSLoad : def __init__( self): pass @staticmethod def readQssFile(qssFileName): with open( qssFileName , 'r', encoding='UTF-8') as file: return file.read() class MyMainWindow(QWidget, Ui_Dialog): def __init__( self, parent=None): super(MyMainWindow, self).__init__(parent) self.setupUi(self) self.initUI() def initUI(self): self.setWindowFlags(Qt.FramelessWindowHint) #去掉标题栏 self.accountcomboBox.setEditable(True) lineEdit = self.accountcomboBox.lineEdit() lineEdit.setPlaceholderText("QQ号码/手机/邮箱") self.passwordEdit.setPlaceholderText("密码") self.loginStatusBtn.raise_() self.picLab.setPixmap(QPixmap(':/images/HeadImage.png')) self.loginStatusBtn.setIcon(QIcon(':/images/state_online.png')) #gif动画效果 self.initBackGif() #小键盘 self.initKeyBoard() #设置背景gif图 def initBackGif(self): pback = QLabel(self) movie = QMovie() movie.setFileName(":/images/back.gif") movie.start() movie.stop() pback.setMovie(movie) movie.start() pback.move(0, 0) #设置小键盘 def initKeyBoard(self): keyBaordBtn = QPushButton() keyBaordBtn.setObjectName("BtnKeyBoard") keyBaordBtn.setFixedSize(QSize(16, 16)) keyBaordBtn.setCursor(QCursor(Qt.PointingHandCursor)) passwordEditLayout = QHBoxLayout() passwordEditLayout.addStretch() passwordEditLayout.addWidget(keyBaordBtn) passwordEditLayout.setSpacing(0) passwordEditLayout.setContentsMargins(0, 0, 8, 0) self.passwordEdit.setLayout(passwordEditLayout) self.passwordEdit.setTextMargins(0, 0, keyBaordBtn.width() + 12, 0) def mousePressEvent(self, event): if event.button() == Qt.LeftButton: self.m_flag = True self.m_Position = event.globalPos() - self.pos() # 获取鼠标相对窗口的位置 event.accept() self.setCursor(QCursor(Qt.OpenHandCursor)) # 更改鼠标图标 def mouseMoveEvent(self, QMouseEvent): if Qt.LeftButton and self.m_flag: self.move(QMouseEvent.globalPos() - self.m_Position) # 更改窗口位置 QMouseEvent.accept() def mouseReleaseEvent(self, QMouseEvent): self.m_flag = False self.setCursor(QCursor(Qt.ArrowCursor)) if __name__ == "__main__": app = QApplication(sys.argv) qssFileName = "./images/login1.qss" qssFile = QSSLoad.readQssFile(qssFileName) win = MyMainWindow() win.setStyleSheet(qssFile) win.show() sys.exit(app.exec())3、运行效果: 我们可以看到随着鼠标的拖动,界面也跟着拖动。 下一篇:PyQt5教程(十三)——实现QQ登录界面(七、信号和槽) 本文原创作者:冯一川([email protected]),未经作者授权同意,请勿转载。如需获取本程序源代码和资源,欢迎发邮件与我联系。 |
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