Develop Reference

How to get MultiSelection in QListView to trigger a click event

Overview: I have a QListView that displays the names of cities. I use MultiSelection as my selection type so the user can single click on a line to select a city, or multiple cities, without having to use Ctrl. MultiSelection allows the user to click and drag over items in the QListView, but it doesn't trigger a click event, so in another window where I display ONLY the user's selected items, it doesn't update to show what the user just selected. If the user then selects another city, then the click event is triggered and the full list of selected indices gets sent to the QListView object that displays the user's selections.
Problem: I need to be able to ensure that a click event occurs following the users drag-selection, so that the list displaying the selected indices is updated.
I didn't include any code because you either know or you don't know how this is done.

As #musicmante says, using selectionModel and selectionChanged is the way to go, but keep in mind that every time you invoke the setModel method, it resets the selectionModel. So anywhere you're using setModel, it would need to have this after it:
yourQListView.setModel(to_whatever)
yourQListView.selectionModel().selectionChanged.connect(theMethodYouWantToRun)

Displaying dropdown choice in the dropdown box using python tkinter

I'm making an airplane booking programme using python. I want to know how to create a dropdown list with options using tkinter module and how to store the option the user selects.
for example, if a user chooses "Manila" from the dropdown list of destinations, "Manila" will be shown on the drop box and will be stored in the programme(for the purpose of displaying tickets). I also don't want my dropdown list box be opened in another window.
I am at a very elementary stage right now since this is a JC project so I would appreciate it if the solutions to my problem could be explained in simpler terms.
Thank you!

Dialog or pop up showing an information from a list

Okay so I created a list of items and each list has a specific information that I want to always show up when the list is clicked. So my question is what is the right code to put in the list that when clicked or on release, shows the information like a dialog box then okay button to close the dialog

Add multiple Elements into every entry in Drop-Down Menu Tkinter

I am trying to make a drop-down menu which supports an image on the left side, then two labels on top of each other, these also need to be different sized, and then on the initial button to open the menu, a down arrow on the right side.
For reference purposes, I am trying to clone the Outlook drop-down option in the Info Frame

Tkinter menus don't support that. You will have to create your own dropdown window and then managing all of the bindings for making it appear and disappear.

Equivalent of an HTML multiple SELECT box in wxPython

I'd like to create a ListBox in wxPython with the same semantics as a multiple select box in HTML. Specifically I'd like the following semantics
When the user clicks on an entry in the list, all other entries become de-selected and the clicked entry becomes selected. If the entry was already selected then it stays selected.
When the user holds down the Ctrl key while clicking on an entry, all other entries stay unchanged, but it toggles whether the clicked entry is selected.
When the user holds down shift and clicks on an entry, that entry and every entry between it and the last clicked entry become selected.
In Java I get this by using the JList class in Swing and setting the selection mode to MULTIPLE_INTERVAL_SELECTED. I assume that there's a way to do this with the wxPython toolkit, but I can't figure out how to get a ListBox or ListCtrl or any other class to do this short of doing an enormous amount of event-driven programming myself.

I think what you're looking for is the wxLB_EXTENDED list box style. Specify style = wx.LB_EXTENDED when you create the ListBox.
You can then use the GetSelections method to obtain a list of the selected items.