Hi Tutors, Thanks in advance for all the advice you've already given to others... it has been extremely useful!
I'm working on a project, and I wanted to have a header, a footer and an expanding canvas with (possibly) many widgets inside it. I simply modified Fred Lundh's auto-hiding scrollbar code found here - http://effbot.org/zone/tkinter-autoscrollbar.htm It is almost working as hoped - but I have the problem that the canvas only resizes smaller, not larger - even when the canvas is too large to display in the original window! I'll attach my code... I'm just not sure what's going wrong: ################################################# from Tkinter import * class AutoScrollbar(Scrollbar): # a scrollbar that hides itself if it's not needed. only # works if you use the grid geometry manager. def set(self, lo, hi): if float(lo) <= 0.0 and float(hi) >= 1.0: # grid_remove is currently missing from Tkinter! self.tk.call("grid", "remove", self) else: self.grid() Scrollbar.set(self, lo, hi) def pack(self, **kw): raise TclError, "cannot use pack with this widget" def place(self, **kw): raise TclError, "cannot use place with this widget" # # create scrolled canvas al = Tk() al.columnconfigure(0,weight=1) al.rowconfigure(0,weight=1) header = Frame(al) header.pack(side= TOP, expand = YES) htxt = Label(header,text='TOP TOP TOP... this is the TOP') htxt.pack() footer = Frame(al) footer.pack(side = BOTTOM, expand = YES) ftxt = Label(footer,text='BOTTOM BOTTOM BOTTOM... this is the BOTTOM!') ftxt.pack() root = LabelFrame(al, bd=2, text='Data',relief='groove',padx=5, pady=5) root.pack(side = TOP, expand = YES) vscrollbar = AutoScrollbar(root) vscrollbar.grid(row=0, column=1, sticky=N+S) hscrollbar = AutoScrollbar(root, orient=HORIZONTAL) hscrollbar.grid(row=1, column=0, sticky=E+W) canvas = Canvas(root, yscrollcommand=vscrollbar.set, xscrollcommand=hscrollbar.set) canvas.grid(row=0, column=0, sticky=N+S+E+W) vscrollbar.config(command=canvas.yview) hscrollbar.config(command=canvas.xview) # make the canvas expandable root.grid_rowconfigure(0, weight=1) root.grid_columnconfigure(0, weight=1) # create canvas contents frame = Frame(canvas) frame.rowconfigure(1, weight=1) frame.columnconfigure(1, weight=1) rows = 20 for i in range(1,rows): for j in range(1,20): button = Button(frame, padx=7, pady=7, text="[%d,%d]" % (i,j)) button.grid(row=i, column=j, sticky='news') canvas.create_window(0, 0, anchor=NW, window=frame) frame.update_idletasks() canvas.config(scrollregion=canvas.bbox("all")) root.mainloop() ################################################# Thanks, Al
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