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How do I handle the window close event in Tkinter?
...enu(root)
filemenu = tkinter.Menu(menubar, tearoff=0)
filemenu.add_command(label="Exit", command=root.destroy)
menubar.add_cascade(label="File", menu=filemenu)
root.config(menu=menubar)
# create a Text widget with a Scrollbar attached
txt = scrolledtext.ScrolledText(root, undo=True)
txt['font'] = (...
What is a NullReferenceException, and how do I fix it?
...oBoxItem Content="Item 3" />
</ComboBox>
<!-- Label declared later -->
<Label Name="label1"
Content="Label"
Margin="10" />
</Grid>
Here comboBox1 is created before label1. If comboBox1_SelectionChanged attempts to reference `lab...
Difficulty with ng-model, ng-repeat, and inputs
... <tr>
<td>
<label class="control-label">Which devices?</label>
</td>
<td ng-repeat="model in models">{{model.name}}
<input type="checkbox" class="che...
Make sure only a single instance of a program is running
...by zgoda:
import fcntl
import os
import sys
def instance_already_running(label="default"):
"""
Detect if an an instance with the label is already running, globally
at the operating system level.
Using `os.open` ensures that the file pointer won't be closed
by Python's garbage ...
Change text from “Submit” on input tag
...
The value attribute is used to determine the rendered label of a submit input.
<input type="submit" class="like" value="Like" />
Note that if the control is successful (this one won't be as it has no name) this will also be the submitted value for it.
To have a differe...
Changing Font Size For UITableView Section Headers
...UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
UILabel *myLabel = [[UILabel alloc] init];
myLabel.frame = CGRectMake(20, 8, 320, 20);
myLabel.font = [UIFont boldSystemFontOfSize:18];
myLabel.text = [self tableView:tableView titleForHeaderInSection:section];
...
width:auto for fields
...want to have a padding on the input field too, than just place a container label around it, move the formatting to that label instead, while also specify the padding to the label. Input fields are rigid.
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How to get form field's id in Django?
...
You can also use id_for_label:
{{ field.id_for_label }}
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MySQL foreign key constraints, cascade delete
...ps
-- Schema
CREATE TABLE T1 (
`ID` int not null auto_increment,
`Label` varchar(50),
primary key (`ID`)
);
CREATE TABLE T2 (
`ID` int not null auto_increment,
`Label` varchar(50),
primary key (`ID`)
);
CREATE TABLE TT (
`IDT1` int not null,
`IDT2` int not null,
...
The ViewData item that has the key 'MY KEY' is of type 'System.String' but must be of type 'IEnumera
...gt; expression, IEnumerable<SelectListItem> selectList, string optionLabel)
where TModel : class
{
string inputName = ExpressionHelper.GetInputName(expression);
return htmlHelper.DropDownList(inputName, selectList, optionLabel);
}
For example
<%= Html.Drop...