Das deutsche Python-Forum

Code: Alles auswählen

#!/usr/bin/env python3
import tkinter as tk


class Window(tk.Tk):
    def __init__(self):
        tk.Tk.__init__(self)
        self.canvas = tk.Canvas(
            self, width=640, height=480, background="white"
        )
        self.canvas.pack()
        self.old_coords = None
        self.bind("<ButtonPress-1>", self.on_button_press)

    def on_button_press(self, event):
        coords = (event.x, event.y)
        if self.old_coords:
            self.canvas.create_line(self.old_coords, coords, width=2)
        self.old_coords = coords


def main():
    Window().mainloop()


if __name__ == "__main__":
    main()

Code: Alles auswählen

#!/bin/sh
# \
exec tclsh "$0" "$@"
package require Tk

set oldCoords ""
pack [tk::canvas .canvas -width 640 -height 480 -background white]
bind .canvas <ButtonPress-1> {
    set newCoords [list %x %y]
    if { $oldCoords != "" } then {
        .canvas create line [concat $oldCoords $newCoords] -width 2
    }
    set oldCoords $newCoords
}
update idletasks
regexp {(\d+)x(\d+)} [wm geometry .] _ width height
puts "Breite: $width, Höhe: $height"