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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