New to programming and especially python and tKinter. How can I create a way to bind the key "s" to the button or the function sharpen
? Any help would be awesome.
from Tkinter import *
from PIL import Image, ImageTk, ImageFilter, ImageEnhance
class Application(Frame):
def __init__(self, master=None):
Frame.__init__(self, master)
master.wm_title("Image examples")
self.pack()
self.createWidgets()
def createWidgets(self):
self.img = Image.open("lineage.jpg")
self.photo1 = ImageTk.PhotoImage(self.img.convert("RGB"))
self.label1 = Label(self, image=self.photo1)
self.label1.grid(row=0, column=0, padx=5, pady=5, rowspan=10)
self.photo2 = ImageTk.PhotoImage(self.img.convert("RGB"))
self.label2 = Label(self, image=self.photo2)
self.label2.grid(row=0, column=1, padx=5, pady=5, rowspan=10)
button5 = Button(self, text="Sharpen", command=self.sharpen)
button5.grid(row=4, column= 2, sticky = N)
def sharpen(self):
img2 = self.img.filter(ImageFilter.SHARPEN)
self.photo2 = ImageTk.PhotoImage(img2)
self.label2 = Label(self, image=self.photo2)
self.label2.grid(row=0, column=1, padx=5, pady=5, rowspan=10)
You'll need to make two changes:
Add
master.bind('s', self.sharpen)
to __init__
. (Binding to the Frame, self
, does not seem to work.)
When s is pressed, self.sharpen(event)
will be called. Since Tkinter will be sending a Tkinter.Event
object, we must also change the call signature to
def sharpen(self, event=None):
Thus, when the button is pressed, event
will be set to the default value, None
, but when the s key is pressed, event
will be assigned to the Tkinter.Event
object.
You can use bind
. I'm going to assume the indenting in your question is wrong and sharpen
is an Application
method.
class Application(Frame):
def __init__(self, master=None):
Frame.__init__(self, master)
master.wm_title("Image examples")
self.pack()
self.createWidgets()
self.bind("s", self.sharpen)
Pythonware has useful information about event handling.
Use bind_all
like this:
def sharpen(self, event):
master.bind_all('s', sharpen)
You can find more info at the Python docs .
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