[移动开发]wxPython绘图

import wx
class DrawFrame(wx.Window):
    def __init__(self,parent,ID):
        wx.Window.__init__(self,parent,ID)
        
        self.Bind(wx.EVT_LEFT_DOWN,self.OnLeftDown)
        self.Bind(wx.EVT_LEFT_UP,self.OnLeftUp)
        self.Bind(wx.EVT_MOTION,self.OnMotion)
       
    def OnLeftDown(self,event):
        self.pos=tuple(event.GetPosition())
        self.CaptureMouse()
    def OnLeftUp(self,event):
        if self.HasCapture():
            self.ReleaseMouse()
    def OnMotion(self,event):
        if event.Dragging() and event.LeftIsDown():
            dc=wx.ClientDC(self)
            self.drawMotion(dc,event)
        event.Skip()
    def drawMotion(self,dc,event):
        self.pen=wx.Pen('red',1,wx.SOLID)
        dc.SetPen(self.pen)
        newPos=tuple(event.GetPosition())
        coords=self.pos+newPos
        print(coords)
        dc.DrawLine(*coords)
        self.pos=newPos
class MainFrame(wx.Frame):
    def __init__(self,parent):
        wx.Frame.__init__(self,parent,-1,'Draw Frame',size=(800,600))
        self.frame=DrawFrame(self,-1)
if __name__=='__main__':
    app=wx.App()
    frame=MainFrame(None)
    frame.Show(True)
    app.MainLoop()

效果如下：

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