Mailman 3 March 2014 - Tkinter-discuss

Control position of Tkinter common dialogs?
by python＠bdurham.com Dec. 9, 2016

Dec. 9, 2016

Python 2.7 under Windows: How can we control the position of Tkinter's common dialogs? Here's what we've discovered: * Certain common dialogs always open up relative to their parent window * Certain common dialogs always open up centered on the user's desktop * All common dialogs appear to ignore the optional parent= parameter Questions: * How can we force a dialog to open up relative to its parent window? * How can we force a dialog to open up centered on the user's desktop? Background: import tkColorChooser as colorchooser import tkFileDialog as filedialog import tkMessageBox as messagebox # always open up relative to parent windows fileOpen = filedialog.askopenfilename() fileOpens = filedialog.askopenfilenames() fileSaveAs = filedialog.asksaveasfilename() color = colorchooser.askcolor() # always open up centered on desktop folderOpen = filedialog.askdirectory() messagebox.askquestion() Malcolm

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importing tk.W?
by memilanuk April 20, 2014

April 20, 2014

So... this is kind of twisting my brain a bit. Not sure I understand how/why this works the way it does. Some help or explanation would be appreciated. On the one hand, I keep reading about the evils/perils of wildcard imports and recommendations for named imports. On the other hand, it seems like nearly every tkinter example in books, guides, tutorials that I see uses a wildcard import. So I was trying to follow along some code examples from a recent book, and also trying to use python3 as much as practical. Given that the original book code was python 2.x and I had to change 'Tkinter' to 'tkinter', I figured why not change to using a named import, i.e. import tkinter as tk rather than from Tkinter import * Other than having to import a 'tk.' to widget names, I figured I should be good to go. Unfortunately not. The book had code like this: from tkinter import * root = Tk() Label(root, text="Username").grid(row=0, sticky=W) While what I was coming up with was more like this: import tkinter as tk root = tk.Tk() tk.Label(root, text="Username").grid(row=0, sticky='W') The difference being that unless I enclosed the W attribute for the option 'sticky=' in quotes, I got an error 'Unresolved reference 'W''. I asked online, and found that apparently 'W' is imported along with 'Label', 'Entry', 'Button', 'Tk', etc. at the top level of tkinter. It appears I can use either a wildcard import, enclose it in quotes, or use explicit reference e.g. tk.W. My question is this: How / why does this make any sense, that an attribute (W) to an option (sticky=) would be imported at the same level as widgets themselves? Is it some artifact left over from tcl, or just a bad idea that never went away? Between having to explicitly reference every widget already (tk.Label) and having to be extra specific with options like sticky... I'm starting to see why everyone uses wildcard imports when it comes to tkinter! Thanks, Monte

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Re: [Tkinter-discuss] Tracebacks
by Bob Greschke April 12, 2014

April 12, 2014

On 2014-02-28, at 12:08, Bob Greschke <bob(a)passcal.nmt.edu> wrote: It doesn't, this would just be more elegant, right? It just seems funny that the interpreter doesn't help out this one little bit more. I'd even say why not just have a Python command that you put in your program (not on the #! line) that tells the interpreter what to globally do with traceback error messages, especially since these things can happen and the program just keep on running. "set stdtraceback to file X". For a non-threaded/non-GUI program it might not be that big of a deal -- it hits a bug and stops -- but for a big Tkinter program you could just keep selecting menus and buttons and never know there was a problem somewhere. Yes there is the logging and the traceback modules and all of that, but that's a lot of duplication of labor. The interpreter already knows everything, you just can't tell it what to do with the messages to make it helpful. It seems like a small oversight to me. On 2014-02-28, at 09:35, Cam <camfarnell(a)bitflipper.ca> wrote: > I'm probably not understanding the question. How does what you propose differ from wrapping your whole application in a try/except so that any uncaught exceptions result in information being written to error.txt? > > Cam > > On 14-02-28 11:33 AM, Bob Greschke wrote: >> This isn't quite a Tkinter thing, but why can't some clever person (I couldn't do it) make it possible for you to put something like this >> >> #! /usr/bin/python -t "/home/me/error.txt",stderr >> >> at the beginning of a Python program and have the interpreter direct all of the traceback messages to the file error.txt, and stderr? I've got a 43,000 line Tkinter/via X11 program and stupid users that won't tell me when it crashes -- if they even notice. Right now we create an xterm on their computer then execute and ssh to the server where the program resides. The errors come out in that xterm, but if the users quit they are gone. It seems like the interpreter would be the smartest place to put something like this since it controls everything, and so you don't have to try and guess in which section of code you misspelled a variable name and put it in a try-except. >> >> Isn't this reasonable? There are all kinds of questions about this problem, but never any really good solutions. I like this one. :) I just wouldn't have any idea how to do it, or if it's even possible. >> >> Bob >> >> _______________________________________________ >> Tkinter-discuss mailing list >> Tkinter-discuss(a)python.org >> https://mail.python.org/mailman/listinfo/tkinter-discuss >> > _______________________________________________ > Tkinter-discuss mailing list > Tkinter-discuss(a)python.org > https://mail.python.org/mailman/listinfo/tkinter-discuss >

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Need help using Tkinter Widget lift() and lower() methods with Place geometry Manager
by GKalman March 15, 2014

March 15, 2014

""" I tried a simple case: Frame with two Canvas widgets. I drag (i.e. move) Canvas #1. When it overlaps with Canvas #2 neither the lift() nor the lower() methods work. Why? """ from Tkinter import * class myObject(): #-------------------------------- def __init__(self,root): self.root = root #place a Frame on the root: self.f = Frame(self.root, bg="yellow", width=600, height=400) self.f.pack() #place a Canvas on the Frame: self.c =Canvas(self.f, bg="cyan",width=100,height=50) #NW-vtx of Canvas: self.xNW=10 self.yNW=10 self.c.place(x=self.xNW,y=self.yNW) ##event-generators: self.c.bind('<ButtonPress-1>', self.startMoveWindow) self.c.bind('<B1-Motion>', self.MoveWindow) self.c2=Canvas(self.f,bg="red",width=100,height=100) self.c2.place(x=300,y=200) self.c2.lower(self.c) #----------------------------------------------- def startMoveWindow(self, event): ## at start: record current root coordinates self.xo, self.yo = event.x_root, event.y_root #-------------------------------------- def MoveWindow(self, event): self.root.update_idletasks() ## use root coordinates for offset of Widget (canvas) coordinates self.xNW += event.x_root - self.xo self.yNW+= event.y_root - self.yo ## update coordinates self.xo, self.yo= event.x_root, event.y_root ## Move & redraw Widget (canvas) self.c.place_configure(x=self.xNW, y=self.yNW) #================================== root=Tk() x = myObject(root) root.mainloop() -- View this message in context: http://python.6.x6.nabble.com/Need-help-using-Tkinter-Widget-lift-and-lower… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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how to get values form the custom widget module to the parent frame widget in Tkinter?
by deepak March 12, 2014

March 12, 2014

I am ne to python GUi, I have built a cust frame by inheriting the Frame , the code is as follows : from Tkinter import * from logging import exception import tkFileDialog import pickle import os.path STATION_NAME, TARGET_NAME, HOST_NAME, TARGET_IP, HOST_IP, EXCEL_FILE = range(6) class NAddStation(Frame): def __init__(self, parent=None): Frame.__init__(self, parent) self.pack(side=TOP, expand=YES, fill=BOTH) self.tempVar = [] # Label Area self.labels = ["Station Name :", "Target Name :", "Host Name :", "Target's IP :", "Host's IP :", "Excel File :"] self.REMOVE =1 self.ADD = 2 self.UPDATE = 3 # Entry Area self.Entry_Target_Name = None self.Entry_Host_Name = None self.Entry_Target_IP = None self.Entry_Host_IP = None self.Entry_Station_Name = None self.Entry_File_Path = None #Misc self.File_Browse_Button = None self.Add_Button = None self.Cancel_Button = None self.createWindow() def openFileBrowser(self): filepath = tkFileDialog.askopenfilename() self.Entry_File_Path.insert(0, filepath) def validate(self): print("Adding Data....") self.Store_Station() def Remove_Station(self,key): if os.path.isfile('Station-pickle'): dbfile = open('Station-pickle', 'rb') db = pickle.load(dbfile) dbfile.close() db.__delitem__(key) dbfile = open('Station-pickle', 'wb') pickle.dump(db, dbfile) dbfile.close() def returnStationName(self): return self.tempVar[0].get() def Store_Station(self): fl={} rc={} fl['SN']= self.tempVar[0].get() fl['HN']= self.tempVar[1].get() fl['HP']= self.tempVar[2].get() fl['TN']= self.tempVar[3].get() fl['TP']= self.tempVar[4].get() fl['XL']= self.tempVar[5].get() station_name = self.tempVar[0].get() rc[station_name]= fl if not os.path.isfile('Station-pickle'): print ("Creating File") dbfile = open('Station-pickle', 'wb') # use binary mode files in 3.X pickle.dump(rc, dbfile) # data is bytes, not str else: print ("Appending File") # -------- dbfile = open('Station-pickle', 'rb') db = pickle.load(dbfile) dbfile.close() db[station_name] = fl dbfile = open('Station-pickle', 'wb') pickle.dump(db, dbfile) dbfile.close() dbfile.close() def Load_Station(self, key_value): dbfile = open('Station-pickle', 'rb') # use binary mode files in 3.X db = pickle.load(dbfile) for key in db: if key == key_value: print("STATION_NAME :" + db[key]['SN']) print("HOST_NAME :" + db[key]['HN']) print("HOST_IP :" + db[key]['HP']) print("TARGET_NAME :" + db[key]['TN']) print("TARGENT_IP :" + db[key]['TP']) print("FILE_NAME :" + db[key]['XL']) return ("STATION_NAME :" + db[key]['SN'] +"\n" + "HOST_NAME :" + db[key]['HN'] + "\n" + "HOST_IP :" + db[key]['HP'] + "\n" + "TARGET_NAME :" + db[key]['TN'] + "\n" + "TARGENT_IP :" + db[key]['TP'] + "\n" + "FILE_NAME :" + db[key]['XL']) print "No Station with Name " + key_value dbfile.close() def createWindow(self): # Station Entry Label(self, text=self.labels[STATION_NAME]).grid(row=0, column=0) self.Entry_Station_Name = Entry(self, width=20) self.tempVar.append(self.Entry_Station_Name) self.Entry_Station_Name.grid(row=0, column=1) # Host Entry Label(self, text=self.labels[HOST_NAME]).grid(row=1, column=0) self.Entry_Host_Name = Entry(self, width=20) self.tempVar.append(self.Entry_Host_Name) self.Entry_Host_Name.grid(row=1, column=1) Label(self, text=self.labels[HOST_IP]).grid(row=1, column=2) self.Entry_Host_IP = Entry(self, width=20) self.tempVar.append(self.Entry_Host_IP) self.Entry_Host_IP.grid(row=1, column=3) # Target Entry Label(self, text=self.labels[TARGET_NAME]).grid(row=2, column=0) self.Entry_Target_Name = Entry(self, width=20) self.tempVar.append(self.Entry_Target_Name) self.Entry_Target_Name.grid(row=2, column=1) Label(self, text=self.labels[TARGET_IP]).grid(row=2, column=2) self.Entry_Target_IP = Entry(self, width=20) self.tempVar.append(self.Entry_Target_IP) self.Entry_Target_IP.grid(row=2, column=3) #Browser Button Label(self, text=self.labels[EXCEL_FILE]).grid(row=3, column=0) self.Entry_File_Path = Entry(self, width=50) self.tempVar.append(self.Entry_File_Path) self.Entry_File_Path.grid(row=3, column=1) self.File_Browse_Button = Button(self, text="Browse", command=self.openFileBrowser, width=10,justify=CENTER).grid(row=3, column=3) Button(self, text="Add", command=(lambda : self.validate()), width=10,justify=CENTER).grid(row=4, column=1) Button(self, text="Cancel", command= self.winfo_toplevel().destroy, width=10,justify=CENTER).grid(row=4, column=2) self.Entry_Station_Name.focus() **Now I want to use the above mentioned Custom Frame in Main app , when i ckick on AddStation from menu file the custome Frame pops up , I can add the data but when i click on ok , i want the data to apear on the textArea , represented by Self.Entity2 in the following code:** from Tkconstants import LEFT, BOTTOM, X, TOP, RIGHT, ACTIVE, Y from Tkinter import Tk, Frame, Menu, END, Label, YES, BOTH, Entry, StringVar, Toplevel import Tkinter import sys from make_db_pickle import * class SimpleApp(Frame): def __init__(self, parent): Frame.__init__(self, parent) self.parent = parent self.pack(expand=YES, fill=BOTH) self.master.title('GUI') self.initialize(parent) self.TargetName = None self.HostName = None self.eHostNameEntry =None self.sbar = None self.AddWidget = None def CancelButtonPressed(self, widget): # print "Cancel Button Pressed" widget.destroy() def AddEntryToListBox(self,entry): self.entry1.insert(END, entry) def enter(event,entry,widget): event.OkButtonPressed(entry,widget) def OkButtonPressed(self,entry,widget): print "Ok bution pressed" self.AddEntryToListBox(str(entry.get()).upper()) widget.destroy() def runCommand(self, selection): # redefine me lower self.entry2.insert('1.0',"The following Station was selected " + selection) self.entry3.insert('1.0',"The following Station was selected " + selection) self.entry4.insert('1.0',"The following Station was selected " + selection) print('You selected:', selection) def handleList(self, event): index = self.entry1.curselection() # on list double-click label = self.entry1.get(index) # fetch selection text self.runCommand(label) # and call action here def initialize(self, parent): menubar = Menu(self.parent) self.parent.config(menu=menubar) self.sbar = Tkinter.Scrollbar(self) fileMenu = Menu(menubar, tearoff = False) fileMenu.add_command(label="Add Station", command=self.AddNewStation) fileMenu.add_command(label="Delete Station", command=self.onExit) fileMenu.add_separator() fileMenu.add_command(label="Exit", command=self.onExit) menubar.add_cascade(label="File", menu=fileMenu) self.grid() self.entry1 = Tkinter.Listbox(self, height=24, yscrollcommand=1, bg="white") # -------------------------- self.sbar = Tkinter.Scrollbar(self) self.sbar.config(command=self.entry1.yview) # xlink sbar and list self.entry1.config(yscrollcommand=self.sbar.set) # move one moves other self.entry1.pack(side=LEFT, expand=YES, fill=BOTH) # list clipped first # pos = 0 #list.config(selectmode=SINGLE, setgrid=1) # select,resize modes self.entry1.bind('<Double-1>', self.handleList) # set event handler # -------------------------- # for i in acts: # self.entry1.insert(END, i) # self.entry1 = Tkinter.Text(self) self.entry1.grid(column=0, row=0, sticky='EW') self.entry2 = Tkinter.Text(self) self.entry2.grid(column=1, row=0, sticky='EW', padx=1, pady=1) self.entry3 = Tkinter.Text(self) self.entry3.grid(column=0, row=1, sticky='EW', padx=1, pady=1) self.entry4 = Tkinter.Text(self) self.entry4.grid(column=1, row=1, sticky='EW', padx=1, pady=1) def onExit(self): sys.exit() def AddNewStation(self): n = Toplevel(root) n.title("Add Station") self.AddWidget = NAddStation(n) n.transient() def AddStation(self): AddStationDialogBox = Toplevel(root) #Tkinter.Tk() AddStationDialogBox.title('Add Station') frame = Frame(AddStationDialogBox) #frame for target entry frame.pack(padx=10, pady=10,side=TOP,fill=X) bottomframe = Frame(AddStationDialogBox) #froame for host entry bottomframe.pack(padx=10, pady=10,side=TOP,fill=X) bottomframe2 = Frame(AddStationDialogBox) #frame for button bottomframe2.pack(side=TOP) AddStationDialogBox.transient() lTargentName = Label(frame, text="Target Name :") lTargentName.pack(side=LEFT) TargetName = StringVar() eTargetEntryField = Entry(frame,width=20) eTargetEntryField.pack(side=RIGHT,fill=X) eTargetEntryField.focus() lHostName = Label(bottomframe, text="Host Name :") lHostName.pack(side=LEFT) HostName = StringVar() eHostNameEntry = Entry(bottomframe,width=20) eHostNameEntry.pack(side=RIGHT,fill=X) okbutton = Tkinter.Button(bottomframe2, text="OK",command=(lambda : self.OkButtonPressed(eTargetEntryField, AddStationDialogBox))) okbutton.pack(side=LEFT, padx=10, pady=15) cancelbutton = Tkinter.Button(bottomframe2, text="CANCEL", command=(lambda : self.CancelButtonPressed(AddStationDialogBox))) cancelbutton.pack(side=LEFT, padx=10, pady=15) AddStationDialogBox.focus() AddStationDialogBox.bind('<Return>',(lambda event : self.enter(eTargetEntryField,AddStationDialogBox))) AddStationDialogBox.mainloop() if __name__ == "__main__": root = Tk() app = SimpleApp(root) app.mainloop() -- View this message in context: http://python.6.x6.nabble.com/how-to-get-values-form-the-custom-widget-modu… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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tkRAD - XML widget building for Tkinter
by tarball69 March 11, 2014

March 11, 2014

Hello there, Would it be possible for me to aknowledge good people Tkinter has now a complete *XML widget building* library named *tkRAD*? Wiki URL: https://github.com/tarball69/tkRAD/wiki Project GitHub: https://github.com/tarball69/tkRAD Project downloads: https://github.com/tarball69/tkRAD/releases I've worked hard for this wiki wiki documentation, so please, read documentation before asking thousands of questions. Thanks a lot. -- View this message in context: http://python.6.x6.nabble.com/tkRAD-XML-widget-building-for-Tkinter-tp50478… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Tracebacks
by Bob Greschke March 1, 2014

March 1, 2014

This isn't quite a Tkinter thing, but why can't some clever person (I couldn't do it) make it possible for you to put something like this #! /usr/bin/python -t "/home/me/error.txt",stderr at the beginning of a Python program and have the interpreter direct all of the traceback messages to the file error.txt, and stderr? I've got a 43,000 line Tkinter/via X11 program and stupid users that won't tell me when it crashes -- if they even notice. Right now we create an xterm on their computer then execute and ssh to the server where the program resides. The errors come out in that xterm, but if the users quit they are gone. It seems like the interpreter would be the smartest place to put something like this since it controls everything, and so you don't have to try and guess in which section of code you misspelled a variable name and put it in a try-except. Isn't this reasonable? There are all kinds of questions about this problem, but never any really good solutions. I like this one. :) I just wouldn't have any idea how to do it, or if it's even possible. Bob

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