分类： Python/Ruby
2007-03-25 20:37:16
| from Tkinter import * class Application(Frame): " " " GUI application which counts button clicks." " " def __init__(self, master): " " " Initialize the frame." " " Frame.__init__(self, master) self.grid() self.bttn_clicks=0 # creates an object atribute to keep track of the number of # times the user clicks the button self.create_widget() def create_widget(self): " " " Create button which displays number of clicks. " " " self.bttn=Button(self) self.bttn["text"]="total clicks: 0" self.bttn["command"]=self.update_count self.bttn.grid() # in general , you set a widget's command option to # bind the activation of the widget with an event handler def update_count(self): " " " Increase click count and display new total." " " self.bttn_clicks+=1 self.bttn["text"]="total clicks:" + str(self.bttn_clicks) # this method increments the total number of button clicks # and then change the text of the button to reflect the new total # wrapping up the program # main root=Tk() root.title("click counter") root.geometry("200x100") app=Application(root) root.mainloop() |
| from Tkinter import * # create the root window root=Tk() root.title("labeler") root.geometry("200x50") # create a frame in the window to hold other widgets app=Frame(root) # the new frame is placed inside the root window app.grid() # let you arrange widgets # create a label in the frame lb1=Label(app, text="I'm a label!") # app is the place where "i'm a label!" exists lb1.grid() # kick off the window's event loop root.mainloop() |
| from Tkinter import * class Application(Frame): " " " A GUI application with three buttons." " " # an application object is just a specialized type of Frame object # define Application's constructor def __init__(self, master): " " " Initialize the Frame " " " Frame.__init__(self, master) self.grid() self.create_widgets() def create_widgets(self): " " " Create three buttons that do nothing." " " # create first botton self.bttn1=Button(self, text="i do nothing") self.bttn1.grid() # create second button self.bttn2=Button(self) self.bttn2.grid() self.bttn2.configure(text="me too") # create third button self.bttn3=Button(self) self.bttn3.grid() self.bttn3["text"]="same here" # main root=Tk() root.title("lazy button 2") root.geometry("200x100") app=Application(root) # this code creates a Application object with the root window as its master # the Application object's constructor invokes the object's create_widgets() methods # this method then create the three buttons # with the Application object as their master root.mainloop() |
| from Tkinter import * # create a root window root=Tk() root.title("lazy button") root.geometry("200x100") # hint: you must not use "=" here # create a frame in the window to hold other widgets ( the buttons here) app=Frame(root) app.grid() # create a button in the frame bttn1=Button(app, text="I do nothing") bttn1.grid() bttn2=Button(app) bttn2.grid() # all i've done is add a blank button to the frame bttn2.configure(text="Me too") # you can use a widget's configure() method for any widgets option # create a third button in the frame bttn3=Button(app) bttn3.grid() bttn3["text"]="same here" # i access the button's text option through a dictionary-like interface # I set the text option to the string "same here", which puts the text # "same here" on the buttons # kick off the window's event loop root.mainloop() |
| from Tkinter import * class Application(Frame): " " " GUI Application from favorite movie type." " " def __init__(self, master): " " " Initialize Frame. " " " Frame.__init__(self, master) self.grid() self.create_widgets() def create_widgets(self): " " " Create widgets for movie type choices. " " " # create description label Label(self, text="choose your favorite type of movie" ).grid(row=0, column=0, sticky=W) # create instruction label Label(self, text="select one:" ).grid(row=1, column=0, sticky=W) # create variable for single, favorite type of movie self.favorite=StringVar() # create comedy radio button Radiobutton(self, text="comedy", variable=self.favorite, value="comedy", command=self.update_text ).grid(row=2, column=0, sticky=W) # create drama radio button Radiobutton(self, text="drama", variable=self.favorite, value="drama", command=self.update_text ).grid(row=3, column=0, sticky=W) # create romance radio buttons Radiobutton(self, text="romance", variable=self.favorite, value="romance", command=self.update_text ).grid(row=4, column=0, sticky=W) # create text field to display results self.results_txt=Text(self, width=40, height=5, wrap=WORD) self.results_txt.grid(row=5, column=0, columnspan=3) def update_text(self): " " " Update text widget and display user's favorite movie types." " " message="your favorite type of movie is " message+=self.favorite.get() self.results_txt.delete(0.0, END) self.results_txt.insert(0.0, message) # main root=Tk() root.title("movie chooser 2") app=Application(root) root.mainloop() |
| from Tkinter import * class Application(Frame): " " " GUI Application from favorite movie types." " " def __init__(self, master): Frame.__init__(self, master) self.grid() self.create_widgets() def create_widgets(self): " " " Create widgets for movie type choices. " " " # create description label Label(self, text="choose your favorite movie types" ).grid(row=0, column=0, sticky=W) # create instruction label Label(self, text="select all that apply:" ).grid(row=1, column=0, sticky=W) # create comedy check button self.likes_comedy=BooleanVar() Checkbutton(self, text="comedy", variable=self.likes_comedy, command=self.update_text ).grid(row=2, column=0, sticky=W) # create drama check button self.likes_drama=BooleanVar() Checkbutton(self, text="drama", variable=self.likes_drama, command=self.update_text ).grid(row=3, column=0, sticky=W) # create romance check buttons self.likes_romance=BooleanVar() Checkbutton(self, text="romance", variable=self.likes_romance, command=self.update_text ).grid(row=4, column=0, sticky=W) # create text field to display results self.results_txt=Text(self, width=40, height=5, wrap=WORD) self.results_txt.grid(row=5, column=0, columnspan=3) def update_text(self): " " " Update text widget and display user's favorite movie types." " " likes = " " if self.likes_comedy.get(): likes+="you like comedic movies.\n" if self.likes_drama.get(): likes+="you like dramatic movies.\n" if self.likes_romance.get(): likes+="you like romantic movies." self.results_txt.delete(0.0, END) self.results_txt.insert(0.0, likes) # main root=Tk() root.title("movie chooser") app=Application(root) root.mainloop() |
| from Tkinter import * # create the root window root=Tk() # i don't have to prefix the module name Tkinter # I can directly access any part of the Tkinter module # you can have only one root window in a Tkinter program # modifying the window root.title("simple GUI") # set the title of the root window root.geometry("800x600") # set the size of the root window, # "x" character, between 'z' and 'c' on the keyboard # kick off the window's event loop root.mainloop() # it is a full-fledged window than can resize, minimize, and close |
| from Tkinter import * class Application(Frame): " " " GUI application which can reveal the secret of longevity. " " " def __init__(self, master): " " " Initialize the frame. " " " Frame.__init__(self, master) self.grid() self.create_widgets() def create_widgets(self): " " " Create button, text, and entry widgets. " " " # create instruction label self.inst_la1=Label(self, text="enter password for the secret of longevity") self.inst_la1.grid(row=0, column=0, columnspan=2, sticky=W) # create label for password self.pw_lb1=Label(self, text="password:") self.pw_lb1.grid(row=1, column=0, sticky=W) # create entry widgets to accept password self.pw_ent=Entry(self) # this code creates a text entry where the user can enter a password self.pw_ent.grid(row=1, column=1, sticky=W) # create submit button self.submit_bttn=Button(self, text="submit", command=self.reveal) # i bind the activation of the button with the reveal() method # which reveals the longevity secret self.submit_bttn.grid(row=2, column=0, sticky=W) # create text widgets to display message self.secret_txt=Text(self, width=35, height=5, wrap=WORD) self.secret_txt.grid(row =3, column=0, columnspan=2, sticky=W) def reveal(self): " " " Display message based on password. " " " contents=self.pw_ent.get() # the get() method returns the text in the widgets if contents=="secret": message="here's the secret to living to 100: live to 99 and then be VERY careful." else: message="that's not the correct password, so i can't share the secret with you ." self.secret_txt.delete(0.0 , END) # the delete() method can delete text from text-based widgets self.secret_txt.insert(0.0 , message) # the insert() method can insert a text-based widgets # main root=Tk() root.title("Longevity") root.geometry("250x150") app=Application(root) root.mainloop() |
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