To interact with objects contained in a Canvas object you need to use tag_bind() which has this format: tag_bind(item, event=None, callback=None, add=None) The item parameter can be either a tag or an id. Here is an example to illustrate the concept: from tkinter import * def onObjectClick(event): print(‘Got object click’, event.x, event.y) print(event.widget.find_closest(event.x, event.y)) root … Read more
One solution is to use a ttk frame with a custom style that uses an image for the corners. The following example is adapted from a tcl/tk solution I wrote back in 2007. It uses an odd color for the focus, and requires a white background, but you could create your own image to replace … Read more
Section 6.8 Why doesn’t the canvas seem to start at 0,0? of the Tk Usage FAQ describes the phenomenon. I was able to eliminate the border artefact with slight changes to the posted source… Change this: w = Canvas(master, width=150, height=40, bd=0, relief=”ridge”) w.pack() to: w = Canvas(master, width=150, height=40, bd=0, highlightthickness=0, relief=”ridge”) w.pack() and … Read more
Just for future reference in case anyone else needs to know: frame = Frame(self.bottom_frame) frame.pack(side = LEFT, fill = BOTH, expand = True, padx = 10, pady = 10) self.canvas = Canvas(frame, bg = ‘pink’) self.canvas.pack(side = RIGHT, fill = BOTH, expand = True) self.mailbox_frame = Frame(self.canvas, bg = ‘purple’) self.canvas_frame = self.canvas.create_window((0,0), window=self.mailbox_frame, anchor … Read more
You don’t have any other widgets so it’s hard to know where you want other widgets. Here’s what I can tell you though: by doing dataPlot.get_tk_widget().pack(side=TOP, fill=BOTH, expand=1) you are asking Tkinter to fill the screen with the plot. This, because you ask it to fill in all directions (fill=BOTH) and expand to fill any … Read more
Advanced zoom example. Like in Google Maps. Example video (longer video here): It zooms only a tile, but not the whole image. So the zoomed tile occupies constant memory and not crams it with a huge resized image for the large zooms. For the simplified zoom example look here. Tested on Windows 7 64-bit and … Read more
Taken straight from an example from an Effbot tutorial on events. In this example, we use the bind method of the frame widget to bind a callback function to an event called . Run this program and click in the window that appears. Each time you click, a message like “clicked at 44 63” is … Read more
Your scrollbars need to have the Frame as a parent, not the Canvas: from tkinter import * root=Tk() frame=Frame(root,width=300,height=300) frame.pack(expand=True, fill=BOTH) #.grid(row=0,column=0) canvas=Canvas(frame,bg=’#FFFFFF’,width=300,height=300,scrollregion=(0,0,500,500)) hbar=Scrollbar(frame,orient=HORIZONTAL) hbar.pack(side=BOTTOM,fill=X) hbar.config(command=canvas.xview) vbar=Scrollbar(frame,orient=VERTICAL) vbar.pack(side=RIGHT,fill=Y) vbar.config(command=canvas.yview) canvas.config(width=300,height=300) canvas.config(xscrollcommand=hbar.set, yscrollcommand=vbar.set) canvas.pack(side=LEFT,expand=True,fill=BOTH) root.mainloop() The reason why this works is due to how pack works. By default it will attempt to shrink (or grow) a … Read more
The variable photo is a local variable which gets garbage collected after the class is instantiated. Save a reference to the photo, for example: self.photo = tkinter.PhotoImage(…) If you do a Google search on “tkinter image doesn’t display”, the first result is this: Why do my Tkinter images not appear? (The FAQ answer is currently … Read more