# draw_line_xw.py
# draw lines, rounded-rectangle, circle in Python wx
import wx
class MyFrame(wx.Frame):
    def __init__(self, parent=None, id=-1, title='draw_line_wx.py'):
        wx.Frame.__init__(self, parent, id, title)
        self.panel = wx.Panel(self, size=(400,400) )
        self.panel.Bind(wx.EVT_PAINT, self.on_paint)
        self.Fit()

    def on_paint(self, event):
        dc = wx.PaintDC(self.panel)   # device or drawing context
        dc.SetPen(wx.Pen('blue', 8) ) # color, width in pixels
        dc.DrawLine(30,20, 300,20)    # x1,y1 to x2,y2
        dc.SetPen(wx.Pen('green',1) )
        dc.DrawLine(30,20, 30,300)    # x1,y1 to x2,y2
        dc.SetPen(wx.Pen('red',1) )   # pen outlines
        rect = wx.Rect(50,50, 200,100)
        dc.DrawRoundedRectangleRect(rect, 4)
        dc.SetBrush(wx.Brush('yellow') )  # brush fills
        dc.DrawCircle(100, 300, 50)       # x, y, radius
                    

app=wx.PySimpleApp()
frame1 = MyFrame()
frame1.Center()
frame1.Show()
app.MainLoop()