可以改成像下面这个程序一样画线吗

Question

就是可以在指定的起始点画线，可以拖曳动态显示直线
或者将下面的tkinter代码嵌入到pyqt5中
非常感谢

```python

#画图软件的实现
from tkinter.filedialog import *
from tkinter import *
from tkinter.colorchooser import *
 
win_width=900
win_height=450
 
 
class Application(Frame):
  def __init__(self,master=None,bgcolor="#000000"):
 
    super().__init__(master)
    self.master=master
    self.bgcolor=bgcolor
    self.x=0
    self.y=0
    self.fgcolor="#ff0000"
    self.lastDraw=0 #表示最后绘制的图形的id
    self.startDrawFlag=False
    self.pack()
    self.createWidget()
  def createWidget(self):
    # 创建画板
    self.drawCad=Canvas(self,width=win_width,height=win_height*0.9,bg=self.bgcolor)
    self.drawCad.pack()
    # 创建按钮
    btn_start = Button(self,text="开始",name="start")
    btn_start.pack(side="left",padx=10)
    btn_pen = Button(self, text="画笔", name="pen")
    btn_pen.pack(side="left", padx=10)
    btn_rect = Button(self, text="矩形", name="rect")
    btn_rect.pack(side="left", padx=10)
    btn_clear = Button(self, text="清屏", name="clear")
    btn_clear.pack(side="left", padx=10)
    btn_earsor = Button(self, text="橡皮擦", name="earsor")
    btn_earsor.pack(side="left", padx=10)
    btn_line = Button(self, text="直线", name="line")
    btn_line.pack(side="left", padx=10)
    btn_lineArrow = Button(self, text="箭头直线", name="lineArrow")
    btn_lineArrow.pack(side="left", padx=10)
    btn_color = Button(self, text="颜色", name="color")
    btn_color.pack(side="left", padx=10)
    #为按钮绑定事件
    btn_pen.bind_class("Button","<1>",self.eventManger)
    self.drawCad.bind("<ButtonRelease-1>",self.stopDraw)
  def eventManger(self,event):
    name=event.widget.winfo_name()
    print(name)
    if name=="line" :
      self.drawCad.bind("<B1-Motion>",self.myline)
    elif name=="lineArrow":
      self.drawCad.bind("<B1-Motion>", self.mylineArrow)
    elif name=="rect":
      self.drawCad.bind("<B1-Motion>", self.myRect)
    elif name=="pen":
      self.drawCad.bind("<B1-Motion>", self.myPen)
    elif name=="earsor":
      self.drawCad.bind("<B1-Motion>", self.myEarsor)
    elif name=="clear":
      self.drawCad.delete("all")
    elif name=="color":
     c= askcolor(color=self.fgcolor,title="画笔选择颜色")
     self.fgcolor=c[1]
   
  def myline(self,event):
    self.startDraw(event)
    self.lastDraw=self.drawCad.create_line(self.x,self.y,event.x,event.y,fill=self.fgcolor)
   
  def mylineArrow(self,event):
    self.startDraw(event)
    self.lastDraw = self.drawCad.create_line(self.x, self.y, event.x, event.y,arrow=LAST , fill=self.fgcolor)
   
  def myRect(self,event):
    self.startDraw(event)
    self.lastDraw = self.drawCad.create_rectangle(self.x, self.y, event.x, event.y, outline=self.fgcolor)
   
  def myPen(self,event):
    self.startDraw(event)
    self.drawCad.create_rectangle(self.x, self.y, event.x, event.y, outline=self.fgcolor)
    self.x=event.x
    self.y=event.y
  def myEarsor(self,event):
    self.startDraw(event)
    self.drawCad.create_rectangle(event.x-4, event.y-4, event.x+4, event.y+4, fill=self.bgcolor)
    self.x = event.x
    self.y = event.y
  def stopDraw(self,event):
    self.startDrawFlag=False
    self.lastDraw=0
   
  def startDraw(self,event):
    self.drawCad.delete(self.lastDraw)
    if not self.startDrawFlag:
      self.startDrawFlag = True
      self.x = event.x
      self.y = event.y
root=Tk()
app=Application(root)
root.title("简易的画图工具")
root.geometry(str(win_width)+"x"+str(win_height)+"+100+100")
root.mainloop()

```