bug in Tkinter?

[Markus von Ehr]

Hi everybody,

I am marking a region in a photo (photoimage in canvas) with a
rectangle:

self.canvas.create_rectangle(..., outline="white")

Then I bind the functions to mouse events:

self.canvas.bind("<ButtonPress-1>",self.Down)
self.canvas.bind("<B1-Motion>",self.Drag)
self.canvas.bind("<ButtonRelease-1>",self.Release)

and I change the coordinates using:

def Drag(self, ev):
       self.canvas.coords(item, ...new_coords...)

there still remain wrong white pixels over my photo, this seems to
happen only in
the lower left corner. How can I eliminate them???

Thanks for any comments,

Markus


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