[Image-SIG] Creating a Transparent Image and Placing it Over Another Image (txt)

[Wayne Watson]

This looks good, but there's a slight problem. It looks right, but I get 
this when I try to run it:
Traceback (most recent call last):
  File 
"C:/Sandia_Meteors/Sentinel_Development/Development_Sentuser-Utilities/Playground/fun-move_object.py", 
line 42, in <module>
    root=Tk()
NameError: name 'Tk' is not defined

Howard Lightstone wrote:
> Here is a *dumb* example of what I think you want.  It can be elaborated with 
> crosshairs, ring sizing, etc.
>
> import PIL
> import Image
> import ImageTk
>
> class data:
>     startx=0
>     starty=0
>
> def startmotioncallback(event):
>     data.startx=event.x
>     data.starty=event.y
>
>     
> def motioncallback(event):
>     deltax=event.x-data.startx
>     deltay=event.y-data.starty
>     data.startx=event.x
>     data.starty=event.y
>     # should put some limits on where the cirle is moved
>     # left as exercise.....
>     data.cnv.move(data.ring,deltax,deltay)
>     
> def Demo(root):
>     # resize window
>     root.geometry('400x400+0+0')
>     data.root=root
>     # make a canvas
>     cnv=Canvas(root)
>     cnv.pack(expand=1,fill=BOTH)
>     data.cnv=cnv
>     img=Image.open('white dragon.png')  # some image you have.....
>     data.img=ImageTk.PhotoImage(img)
>     data.photo=cnv.create_image(0,0,image=data.img,anchor='nw')
>     data.ring=cnv.create_oval((100,100,300,300))
>     cnv.bind("<B1-Motion>",motioncallback)
>     cnv.bind("<Button-1>",startmotioncallback)
>     root.mainloop()
>     
>
> if __name__ == '__main__':
>
>     root=Tk()
>     Demo(root)
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig
>
>   

-- 

           Wayne Watson (Watson Adventures, Prop., Nevada City, CA)

             (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****

          "Less than all cannot satisfy Man." -- William Blake