3

I have been having trouble keeping the canvas/window from just expanding to the size of the information I am putting in the widget. I want to add scrollbars and limit the size of the canvas. This is for a popup window within a larger program. Here is my code

from Tkinter import * import os import tkMessageBox class ClusterDialog(Toplevel): def __init__(self, parent, displayClass, clusterInfo, title = None): Toplevel.__init__(self, parent) self.transient(parent) #top = self.top = Toplevel(parent) if title: self.title(title) #set parent self.parent = parent #set class self.dClass = displayClass #dictionary to store the header data in self.clusterInfo = clusterInfo #stores checkbox variables self.varList = None self.boxList = None self.name = None self.frameTopLevel = Frame(self,bd=2, width = 200,height=300) self.frameTopLevel.pack() self.buttonbox(self.frameTopLevel) self.frame = Frame(self.frameTopLevel, width = 200,height=300) #frame=Frame(root,width=300,height=300) self.frame.grid(row=0,column=0) self.frame.pack() self.canvas=Canvas(self.frame,bg='#FFFFFF',width=300,height=300,scrollregion=(0,0,500,1000)) hbar = Scrollbar(self.frame,orient=HORIZONTAL) hbar.pack(side=BOTTOM,fill=X) hbar.config(command=self.canvas.xview) vbar=Scrollbar(self.frame,orient=VERTICAL) vbar.pack(side=RIGHT,fill=Y) vbar.config(command=self.canvas.yview) self.canvas.config(width=300,height=300) self.canvas.config(xscrollcommand=hbar.set, yscrollcommand=vbar.set) self.canvas.pack(side=LEFT,expand=True,fill=BOTH) self.frame.config(height = 100) self.body(self.canvas) self.canvas.config(width=300,height=300) self.grab_set()

Basically I am trying to create a topLevel frame that has a frame within it that contains the scrollbar and the canvas. the self.buttonbox(self.frameTopLevel) adds some buttons and the self.body(self.canvas) adds a bunch of checkboxes for the user to manipulate.

When i run this code my window always expands to the size of the screen and I can't scroll, although the scrollbars are present they do not do anything. Any help would be appreciated? I have been looking at other threads with similar problems but could not find a fix that would work.

Thanks

Improve this question

1 Answer 1

Reset to default
2

I just got your code to work however I had comment several things out so it did not populate the canvas with buttons. The window did not take up the entire screen though...

Window Size: Maybe try setting the geometry of the toplevel?

self.geometry("300x300+10+10") # numbers corresponding to [width]x[height]+[x offset]+[y offset]

Canvas: The problem is with placing widgets in the canvas. You might want to check this example out: effbot

Improve this answer
Sign up to request clarification or add additional context in comments.

6 Comments

Thanks, the self.geometry method worked great for keeping the window to a correct size. However, now I am still not getting the scrollbar to let me scroll down to additional buttons when i populate the canvas. Would you happen to see any additional tricks i could use on this? Thanks
I am looking at it... It seems like you are doing everything like in the example over at effbot.
So I have been looking around and see that when I call canvas.bbox(ALL) i get None as an output. Does anybody know if this is my problem. I basically have populated the canvas with a bunch of checkbuttons given as the following: var = IntVar() cb = Checkbutton(self.canvas, text = "checkbox", variable = var) cb.grid(row = i, columnspan = 2, sticky=W)
@Sugarloafer99: I think the problem might be what you are putting onto the canvas. I put a blue square on the canvas and it works fine: 'self.canvas.create_rectangle(50, 25, 150, 75, fill="blue")'
You might want to check this example out: effbot
|

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.