Help in wxpython
Dave Angel
davea at ieee.org
Wed Dec 2 04:06:08 EST 2009
madhura vadvalkar wrote:
> Hi
>
> I am trying to write an PAINT like application where on the mouse
> click a circle is drawn on canvas. I am new to python and using
> wxpython to create this.
>
> here is the code:
>
> import wx
>
> class SketchWindow(wx.Window):
>
> def __init__ (self, parent,ID):
>
> wx.Window.__init__(self, parent, ID)
>
> self.panel =wx.Panel(self, size= (350,350))
> self.pen=wx.Pen( 'blue',4)
> self.pos=(0,0)
> self.InitBuffer()
> self.Bind(wx.EVT_LEFT_DOWN,self.OnLeftDown)
>
> def InitBuffer(self):
>
> size=self.GetClientSize()
> self.Buffer=wx.EmptyBitmap(size.width,size.height)
> dc=wx.BufferedDC(None,self.buffer)
>
You spelled the instance attribute differently. You initialized it as
"Buffer" but reference it as "buffer" Lowercase would be more standard.
> <snip>
> I am getting the following error:
>
> Traceback (most recent call last):
> File "C:/Python26/circle.py", line 42, in <module>
> frame=SketchFrame(None)
> File "C:/Python26/circle.py", line 38, in __init__
> self.sketch = SketchWindow(self, -1)
> File "C:/Python26/circle.py", line 12, in __init__
> self.InitBuffer()
> File "C:/Python26/circle.py", line 19, in InitBuffer
> dc=wx.BufferedDC(None,self.buffer)
> AttributeError: 'SketchWindow' object has no attribute 'buffer'
>
> Please tell me what I am doing wrong.
>
> Thanks
>
>
>
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