pyqt4制作透明无边框窗体_python qtextedit背景透明

用PyQt做了一个无边框登陆窗口，效果如下：

下面是代码：

# -*- coding: utf-8 -*-

from PyQt4 import QtGui ,Qt ,QtCore

 

image=QtGui.QImage()

bgImage=image.load("images/logins.png")

 

class labelBtn(QtGui.QLabel):

    """

    自定义图片按钮类

    """

    def __init__(self,ID):

        super(labelBtn, self).__init__()

        self.setMouseTracking(True)

        self.ID=ID

   

    def mouseReleaseEvent(self,event):  #注:

        #鼠标点击事件

        self.parent().btnHandle(self.ID)

   

    def enterEvent(self,event):

        #鼠标进入时间

        self.parent().btnEnter(self.ID)

   

    def leaveEvent(self,event):

        #鼠标离开事件

        self.parent().btnLeave(self.ID)

      

class login(QtGui.QMainWindow):

    def __init__(self,parent=None):

        super(login, self).__init__(parent)

        self.setWindowTitle(u"学生体能健康测试软件")

        self.setFixedSize(347,264)

        self.setWindowIcon(QtGui.QIcon("images/umbrella.png"))

        #窗口居中显示

        desktop =QtGui.QApplication.desktop()

        width = desktop.width()

        height = desktop.height()

        self.move((width - self.width())/2, (height - self.height())/2)

        self.setMouseTracking(True)

        #无边框

        self.setWindowFlags(Qt.Qt.FramelessWindowHint)

        #显示托盘信息

        self.trayIcon = QtGui.QSystemTrayIcon(self)

        self.trayIcon.setIcon(QtGui.QIcon("images/umbrella.png"))

        self.trayIcon.show()

        self.trayIcon.activated.connect(self.trayClick)       #点击托盘 

        self.trayMenu()                                       #右键菜单               

 

        label_user = QtGui.QLabel(u"账号",self)

        label_user.setGeometry(QtCore.QRect(125, 135, 50, 22))

        label_passwd = QtGui.QLabel(u"密码",self)

        label_passwd.setGeometry(QtCore.QRect(125, 170, 50, 22))

     

        self.label = QtGui.QLabel(self)

        self.label.setGeometry(QtCore.QRect(19, 129, 80, 80))

        self.label.setPixmap(QtGui.QPixmap("images/teacher.png"))

     

        self.lineEdit_user = QtGui.QLineEdit(u"root",self)

        self.lineEdit_user.setGeometry(QtCore.QRect(160, 135, 150, 22))

     

        self.lineEdit_passwd = QtGui.QLineEdit(u'1234',self)

        self.lineEdit_passwd.setGeometry(QtCore.QRect(160, 170, 150, 22))

        self.lineEdit_passwd.setEchoMode(QtGui.QLineEdit.Password)

        self.lineEdit_passwd.setValidator(QtGui.QRegExpValidator(Qt.QRegExp("[A-Za-z0-9]+"),self))

        #这里也可以设置QLineEdit背景为透明

        self.pushButton_login = QtGui.QPushButton(QtGui.QIcon("images/login.png"),u"登录",self)

        self.pushButton_login.setGeometry(QtCore.QRect(250, 235, 75, 22))

     

        self.pushButton_change = QtGui.QPushButton(QtGui.QIcon("images/onetwo.png"),u"身份切换",self)

        self.pushButton_change.setGeometry(QtCore.QRect(10, 235, 75, 22))

        self.pushButton_change.setFlat(True)

        self.pushButton_change.setContextMenuPolicy(Qt.Qt.CustomContextMenu)

     

        self.btn_min=labelBtn(1)               #定义最小化按钮 ID:1

        self.btn_min.setParent(self)

        self.btn_min.setGeometry(281,0,27,23)

        self.btn_min.setToolTip(u"最小化")

     

        self.btn_close=labelBtn(2)              #定义关闭按钮 ID:2

        self.btn_close.setParent(self)

        self.btn_close.setGeometry(310,0,38,21)

        self.btn_close.setToolTip(u"关闭")

     

        self.connect(self.pushButton_change, QtCore.SIGNAL("clicked()"),self.contextMenu)

        self.connect(self.pushButton_login, QtCore.SIGNAL("clicked()"),self.log_in)

      

    def contextMenu(self):
    
        self.userOption = QtGui.QAction(QtGui.QIcon("images/user.png"),u"学生", self)
    
        self.rootOption = QtGui.QAction(QtGui.QIcon("images/root.png"),u"老师", self)
    
        
    
        self.userOption.triggered.connect(self.user)
    
        self.rootOption.triggered.connect(self.root)
    
        
    
        menu = QtGui.QMenu(self)
    
        menu.addAction(self.rootOption)
    
        menu.addAction(self.userOption)
    
        menu.exec_(QtGui.QCursor.pos())

      

    def root(self):

       self.pushButton_change.setText(u"老师")

       self.label.setPixmap(QtGui.QPixmap("images/teacher.png"))

      

    def user(self):

        self.pushButton_change.setText(u"学生")

        self.label.setPixmap(QtGui.QPixmap("images/students.png"))

      

    def log_in(self):

        dlg=QtGui.QMessageBox(self)

        dlg.information(self, u"提示",u"应该跳向另一个窗口，这里没有写！",QtGui.QMessageBox.Ok)       

          

    def btnHandle(self,ID):

        #最小化

        if ID==1:

            self.hide()

            self.showMinimized()

        elif ID==2:

           #关闭

           self.trayIcon.hide()

           self.close()

                      

    def btnEnter(self,ID):

       #鼠标进入

       if ID == 1:

           self.btn_min.setPixmap(QtGui.QPixmap("images/min.png"))

       elif ID == 2:

           self.btn_close.setPixmap(QtGui.QPixmap("images/close.png"))

 

    def btnLeave(self,ID):

       #鼠标离开

       '''false.png这张图片是不存在的，目的是要在鼠标

        离开后还原背景，因为默认按钮我已经PS在背景上了'''

       self.btn_min.setPixmap(QtGui.QPixmap("images/false.png"))

       self.btn_close.setPixmap(QtGui.QPixmap("images/false.png"))

                   

    def trayClick(self,reason):

       #双击托盘

       if reason==QtGui.QSystemTrayIcon.DoubleClick:

           self.showNormal()

       else:

           pass

      

    def trayMenu(self):

       #右击托盘弹出的菜单

       img_main = QtGui.QIcon("images/main.png")

       img_exit = QtGui.QIcon("images/exit.png")

       self.trayIcon.setToolTip(u"学生体能健康测试软件")

       self.restoreAction = QtGui.QAction(img_main,u"打开主窗口", self)

       self.restoreAction.triggered.connect(self.showNormal)

       self.quitAction = QtGui.QAction(img_exit,u"退出", self)

       self.quitAction.triggered.connect(QtGui.qApp.quit)

       self.trayIconMenu = QtGui.QMenu(self)

       self.trayIconMenu.addAction(self.restoreAction)

       self.trayIconMenu.addSeparator()

       self.trayIconMenu.addAction(self.quitAction)

       self.trayIcon.setContextMenu(self.trayIconMenu)

      

    def resizeEvent(self,event):

       #重绘窗体背景

       pal=QtGui.QPalette()

       pal.setBrush(QtGui.QPalette.Window,QtGui.QBrush(image.scaled(event.size(),

           Qt.Qt.KeepAspectRatioByExpanding,Qt.Qt.SmoothTransformation)))

       self.setPalette(pal)

 

    """下面这两个才是重点，是动得关键"""

    def mousePressEvent(self,event):

       #鼠标点击事件

       if event.button() == QtCore.Qt.LeftButton:

           self.dragPosition = event.globalPos() - self.frameGeometry().topLeft()

           event.accept()

   

    def mouseMoveEvent(self,event):

       #鼠标移动事件

        if event.buttons() ==QtCore.Qt.LeftButton:

            self.move(event.globalPos() - self.dragPosition)

            event.accept()   

 

if __name__ == "__main__":

    import sys

    app = QtGui.QApplication(sys.argv)

    frm = login()

    frm.show()

    sys.exit(app.exec_())

 

注

: 目前的问题是 QLabel 相应的是点击事件，不是单击事件，这个问题还没用解决！