How to use the pyqtgraph.Qt.QtCore.Qt function in pyqtgraph

def mouseMoveEvent(self, event):
        dx = event.x() - self.lastPos.x()
        dy = event.y() - self.lastPos.y()

        if event.buttons() & QtCore.Qt.LeftButton:
            # move the scene
            self.setMovement((dx,dy)) 
        elif event.buttons() & QtCore.Qt.MiddleButton:
            self.setRotation((dx,dy))
            
        self.lastPos = event.pos()

self.gridLayout.addWidget(self.dial, 2, 1, 1, 1)
        self.label_25 = QtGui.QLabel(self.dockWidgetContents)
        self.label_25.setMinimumSize(QtCore.QSize(0, 0))
        self.label_25.setMaximumSize(QtCore.QSize(16777215, 16777215))
        font = QtGui.QFont()
        font.setBold(True)
        font.setWeight(75)
        self.label_25.setFont(font)
        self.label_25.setObjectName(_fromUtf8("label_25"))
        self.gridLayout.addWidget(self.label_25, 7, 0, 1, 1)
        self.horizontalScrollBarDis = QtGui.QScrollBar(self.dockWidgetContents)
        self.horizontalScrollBarDis.setEnabled(False)
        self.horizontalScrollBarDis.setMinimumSize(QtCore.QSize(0, 0))
        self.horizontalScrollBarDis.setMaximumSize(QtCore.QSize(16777215, 16777215))
        self.horizontalScrollBarDis.setProperty("value", 50)
        self.horizontalScrollBarDis.setOrientation(QtCore.Qt.Horizontal)
        self.horizontalScrollBarDis.setObjectName(_fromUtf8("horizontalScrollBarDis"))
        self.gridLayout.addWidget(self.horizontalScrollBarDis, 3, 2, 1, 1)
        self.verticalSlider = QtGui.QSlider(self.dockWidgetContents)
        self.verticalSlider.setMinimumSize(QtCore.QSize(0, 70))
        self.verticalSlider.setMaximumSize(QtCore.QSize(16777215, 70))
        self.verticalSlider.setProperty("value", 50)
        self.verticalSlider.setOrientation(QtCore.Qt.Vertical)
        self.verticalSlider.setObjectName(_fromUtf8("verticalSlider"))
        self.gridLayout.addWidget(self.verticalSlider, 7, 1, 1, 1)
        self.label_24 = QtGui.QLabel(self.dockWidgetContents)
        self.label_24.setMinimumSize(QtCore.QSize(0, 0))
        self.label_24.setMaximumSize(QtCore.QSize(16777215, 16777215))
        font = QtGui.QFont()
        font.setBold(True)
        font.setWeight(75)
        self.label_24.setFont(font)

#strings = self.tickStrings(values, self.scale, spacing)
            # Determine exactly where tick text should be drawn
            for j in range(len(strings)):
                vstr = strings[j]
                if vstr is None: ## this tick was ignored because it is out of bounds
                    continue
                vstr = asUnicode(vstr)
                x = tickPositions[i][j]
                #textRect = p.boundingRect(QtCore.QRectF(0, 0, 100, 100), QtCore.Qt.AlignCenter, vstr)
                textRect = rects[j]
                height = textRect.height()
                width = textRect.width()
                #self.textHeight = height
                offset = max(0,self.style['tickLength']) + textOffset
                if self.orientation == 'left':
                    textFlags = QtCore.Qt.TextDontClip|QtCore.Qt.AlignRight|QtCore.Qt.AlignVCenter
                    rect = QtCore.QRectF(tickStop-offset-width, x-(height/2), width, height)
                elif self.orientation == 'right':
                    textFlags = QtCore.Qt.TextDontClip|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter
                    rect = QtCore.QRectF(tickStop+offset, x-(height/2), width, height)
                elif self.orientation == 'top':
                    textFlags = QtCore.Qt.TextDontClip|QtCore.Qt.AlignCenter|QtCore.Qt.AlignBottom
                    rect = QtCore.QRectF(x-width/2., tickStop-offset-height, width, height)
                elif self.orientation == 'bottom':
                    textFlags = QtCore.Qt.TextDontClip|QtCore.Qt.AlignCenter|QtCore.Qt.AlignTop
                    rect = QtCore.QRectF(x-width/2., tickStop+offset, width, height)

                #p.setPen(self.pen())
                #p.drawText(rect, textFlags, vstr)
                textSpecs.append((rect, textFlags, vstr))
        profiler('compute text')

def keyPressEvent(self, ev):
        if not self.isSelected():
            ev.ignore()
            return
        
        if ev.key() == QtCore.Qt.Key_Delete or ev.key() == QtCore.Qt.Key_Backspace:
            self.source.disconnect(self.target)
            ev.accept()
        else:
            ev.ignore()

def makeLayout(self, title):
        layout = QtGui.QGridLayout()
        #labels
        title = QtGui.QLabel(title)
        title.setFont(QtGui.QFont('MS Shell Dlg 2',pointSize=16))
        title.setAlignment(QtCore.Qt.AlignCenter)
        freqlabel = QtGui.QLabel('Frequency (Hz)')
        voltagelabel = QtGui.QLabel('VPP (V)')
        layout.addWidget(freqlabel,1, 0, 1, 1)
        layout.addWidget(voltagelabel,1, 1, 1, 1)
        #editable fields
        self.spinFreq = QtGui.QDoubleSpinBox()
        self.spinFreq.setFont(QtGui.QFont('MS Shell Dlg 2',pointSize=16))
        self.spinFreq.setDecimals(3)
        self.spinFreq.setSingleStep(0.1)
        self.spinFreq.setRange(10.0,250.0)
        self.spinFreq.setKeyboardTracking(False)
        self.spinVoltage = QtGui.QDoubleSpinBox()
        self.spinVoltage.setFont(QtGui.QFont('MS Shell Dlg 2',pointSize=16))
        self.spinVoltage.setDecimals(2)
        self.spinVoltage.setSingleStep(0.1)
        self.spinVoltage.setRange(-145.0, 30.0)

def keyPressEvent(self, ev):
        if ev.key() == QtCore.Qt.Key_Delete or ev.key() == QtCore.Qt.Key_Backspace:
            ev.accept()
            if not self.node._allowRemove:
                return
            self.node.close()
        else:
            ev.ignore()

self.label.setObjectName(_fromUtf8("label"))
        self.gridLayout_2.addWidget(self.label, 2, 0, 1, 1)
        self.alphaGroup = QtGui.QGroupBox(Form)
        self.alphaGroup.setGeometry(QtCore.QRect(10, 390, 234, 60))
        self.alphaGroup.setCheckable(True)
        self.alphaGroup.setObjectName(_fromUtf8("alphaGroup"))
        self.horizontalLayout = QtGui.QHBoxLayout(self.alphaGroup)
        self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
        self.autoAlphaCheck = QtGui.QCheckBox(self.alphaGroup)
        self.autoAlphaCheck.setChecked(False)
        self.autoAlphaCheck.setObjectName(_fromUtf8("autoAlphaCheck"))
        self.horizontalLayout.addWidget(self.autoAlphaCheck)
        self.alphaSlider = QtGui.QSlider(self.alphaGroup)
        self.alphaSlider.setMaximum(1000)
        self.alphaSlider.setProperty("value", 1000)
        self.alphaSlider.setOrientation(QtCore.Qt.Horizontal)
        self.alphaSlider.setObjectName(_fromUtf8("alphaSlider"))
        self.horizontalLayout.addWidget(self.alphaSlider)

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

def setupPen(self):
        pscode =  self.opts.pppara.pickstyles[0]
        if pscode == '-':
            pstyle = QtCore.Qt.SolidLine
        elif pscode == '--':
            pstyle = QtCore.Qt.DashLine
        elif pscode == ':':
            pstyle = QtCore.Qt.DotLine
        self.opts.pickpens = [pg.mkPen(c, width=2, style=pstyle) for c in self.opts.pickcolors]
        self.opts.cursorpen = pg.mkPen(width=1, style=QtCore.Qt.DashLine)
        self.opts.picknames = ['T'+str(i) for i in range(self.opts.pppara.npick)]
        self.opts.picknones = [None,] * self.opts.pppara.npick
        self.opts.oripen = pg.mkPen(width=2, style=QtCore.Qt.SolidLine, color=self.opts.colorwavedel[:3])
        self.opts.mempen = pg.mkPen(width=2, style=QtCore.Qt.SolidLine, color=self.opts.colorwave[:3])
        self.picklist = list(range(self.opts.pppara.npick))
        self.opts.colorwaves = [ self.opts.colorwavedel, self.opts.colorwave ]

def hoverEvent(self, ev):
        ev.acceptDrags(QtCore.Qt.LeftButton)