Besides being able to draw text and bitmaps, DC's are also able to draw arbitrary shapes and lines. These rudimentary tools are what make it possible to create entirely custom widgets and controls, and to perform tasks such as drawing diagrams. This recipe explores these additional abilities of the PaintDC by creating a simple smiley face control.
Here we will define our simple smiley face control that is derived from PyControl:
class Smiley(wx.PyControl):
def __init__(self, parent, size=(50,50)):
super(Smiley, self).__init__(parent,
size=size,
style=wx.NO_BORDER)
# Event Handlers
self.Bind(wx.EVT_PAINT, self.OnPaint)Here in, OnPaint is where we will draw our Smiley face onto the PyControl's background:
def OnPaint(self, event):
"""Draw the image on to the panel"""
dc = wx.PaintDC(self) # Must create a PaintDC
# Get the working rectangle...