The wxPython tutorial

The Graphics Device Interfacehttp://www.zetcode.com/wxpython/gdi/#!/usr/bin/python# line2.pyimport wxclass Line(wx.Frame):def __init__(self, parent, id, title):wx.Frame.__init__(self, parent, id, title, size=(250, 150))self.Bind(wx.EVT_PAINT, self.OnPaint)self.Centre()self.Show(True)def OnPaint(self, event):dc = wx.PaintDC(self)dc.DrawLine(50, 60, 190, 60)app = wx.App()Line(None, -1, 'Line')app.MainLoop()self.Bind(wx.EVT_PAINT, self.OnPaint)Here we bind the OnPaint method to the wx.PaintEvent event.It means, that each time our window is repainted, we call theOnPaint method. Now the line will not disappear, if we resizeour window (cover it, maximize it).dc = wx.PaintDC(self)Notice, that this time we have used the wx.PaintDC devicecontext.Figure: drawing a line4 de 44 27/04/2008 1:08