FAQ Database Discussion Community


How to insert a temporary text in a tkinter Entry widget?

python,python-2.7,python-3.x,tkinter,entry
How to insert a temporary text in a tkinter Entry widget? For example, I have a Label User and next to it I have an Entry widget which should have some text "Enter your username..." at the beginning of the application, and while putting cursor on the Entry widget, it...

Java HashMap iteration Map.Entry<> vs Entry<>

java,dictionary,hashmap,iteration,entry
I am new to Java and writing java on a Mac using HashMap. However I encountered a problem that I can't find the answer import java.util.Map; import java.util.HashMap; public class Test { public static void main(String[] args) { Map<String, Integer> hm = new HashMap<>(); hm.put("a", 1); hm.put("b", 2); for (Entry<String,...

How to properly use HashMap::entry?

hashmap,rust,entry
This snippet of code: use std::collections::HashMap; use std::collections::hash_map::Entry::{Occupied, Vacant}; fn main() { let mut vars = HashMap::<i32, f64>::new(); let key = 10; let val = match vars.entry(key) { Vacant(entry) => entry.set(0.0), Occupied(entry) => entry.into_mut(), }; *val += 3.4; println!("{}", val); } give error like this in playpen: :8:29: 8:37 error:...

Error: AttributeError: 'Application' object has no attribute 'message'

python,python-3.x,tkinter,entry,attributeerror
Every time I type a number into one of the entry widgets I get this error. I can't tell where I went wrong and I'm very new to tkinter so it's not so intuitive. When I remove self.change_message('clear') it doesn't recognise p1 as a float and thus doesn't carry on...

Tkinter dialog showinfo loop error

python,dialog,tkinter,entry
I'm fairly new to python and am working on a CS problem where I have to design a simple number guessing game. The game must also contain a Tkinter Label widget that explains the rules of the game (pick a number between 1 - 100), an Entry widget that takes...

How to get input from Entry and set it as the text in a Label

python,tkinter,label,entry
how do I get the Input from an Entry widget and set it as the text in a label widget. I have tried the following: l_one = Label(window, text= lambda: self.entry_1.get()) l_one.grid(column = 0, row = 0) To be honest, I didn't think it would work but it was all...

Python 2.5 Tkinter Highlight Spinbox Entry

python,tkinter,spinner,entry
This question seems trivial to me but I can't seem to find anything related to it, and the Spinbox docs don't seem to help. Is there any way to select all of the text in a Spinbox widget? I'm currently trying: self.spinbox.selection_clear() self.spinbox.selection('range', 0, END) to no avail. I have...

tkinter python 3.4 set zero if DoubleVar or IntVar is empty

python,string,tkinter,double,entry
I am trying to set a text-box or EntryBox to 0 if this entry box is empty I can do it if the entrybox's textvariable is a String, but I cant if is a DoubleVar or an IntVar can somebody help me here is my code mGui = Tk() mGui.title("GUI")...

How to get an entry.bind and a button do the same thing?

python,button,tkinter,bind,entry
I think the name of the topic is pretty clear, I haven't found any answer elsewhere so I came to ask for it. I have a tkinter GUI with an entry and a validation button. I'd like to call the same function when I press a key in the entry,...

delete from database entry PHP script deletes all entries

php,mysql,database,delete,entry
I'm trying to add a delete function for my blog where the logged in user can click on the delete link, but it just does not work. this is the form for display: <div id= "blogtitle"><?php echo $title; ?></div><div id= "date"><?php echo $date; ?></div> <div id="contant"> <?php echo $contant; ?>...

tkinter entry variable from function

python,tkinter,global,entry
This should be easy but I am suffering search fatigue for the answer I need. The code below pops up an input window. I make entries into the entry fields and the function show_entry_fields() gets the input and the window closes. I then want to use the new entry variables...

tk entry background color change in readonly mode

tcl,tk,entry
Hi I have a requirement where i need to create table and the cells would be readonly. But along with readonly mode, the cells need to have colored background. Now with the given options, i tried doing something like below but with no luck. Since I am learning GUI designing,...

OnValidate - registering lots of different validations

tkinter,entry
I wrote a GUI tool which has a lot of variables that can be changed via entrys. Every entry has a different validation rule and i only show around 20 items per page (array of entries). I fear that when i register too many validations (on TK) without unregistering (?)...

Tkinter Messagebox causing Entry to disable

python,tkinter,messagebox,entry
So I was creating a simple input window with Tkinter but whenever i have a showinfo displaying i can't type in the entry box import tkinter as tk from tkinter import * from tkinter.messagebox import * root = tk.Tk() root.title("hello world") root.minsize(700,600) abc = StringVar() abc.set("abc") Entry(root, bd = 1,...

Items are listed in listbox, I want to use foreach to delete the items from SQL [closed]

sql,listbox,delete,entry
private void SearchTable() { try { using (SqlConnection con = new SqlConnection("Data Source=localhost\\SQLEXPRESS;Initial Catalog=Steripack;Integrated Security=True")) { foreach (var item in lstCompleted.Items) { string killtag = item.ToString(); con.Open(); using (SqlCommand command = new SqlCommand("DELETE FROM tblAsset1 WHERE tagID = " + killtag)) { command.ExecuteNonQuery(); lstCompleted.Items.Add("Removed: " + killtag); } con.Close(); }...