I am using ListAdapter to create a list of buttons and also use them as multiselect.
I want something like button + multiselect that means; when I touch and hold a button for sometime, it should go for multi selection. On a single button click, it should work as a normal button.
Any idea how this is done in Kivy?
self.list_adapter = ListAdapter(data=[],selection_mode='multiple',
cls=ListItemButton, sorted_keys=[])
Related
So I have used .bind() on all my buttons and basically I would like to see which button is currently 'selected' when I switch between them with tabulator key. I did spend already quite a while on search for solution but didn't found anything useful. I don't know how to grab that moment when after pressing Tab key focus is on a button.
When there is more widgets I can .bind() Tab key to a widget proceeding button to simply just change foreground of a button but this won't work in case when I have only buttons in frame because first button will be omitted and that's not a clean and right solution to my issue.
If I bind Tab key to that button and change foreground then it's changed but after pressing Tab when button was already selected.
I don't know is there any clean solution for that problem or I will have to for frames that have only buttons create some starting_dummy widget that would initiate change for a first button.
Haven't found a way to detect is Tab key focused at this moment on a particular button (like it is with hover and cursor) but I know when it's going to be so I used that and solved case with only buttons in frame. It's based on what I already wrote in the question - I'm binding Tab key with a function to a widget preceding button to change button colour while button is bind to a function that's changing colour back to normal like this:
self.entry.bind("<Tab>", self.focus_in)
self.button.bind('<Tab>', self.focus_out)
def focus_in(self, event):
self.button.configure(fg_color='white')
def focus_out(self, event):
self.button.configure(fg_color='black')
For the case when only widgets in the frame/root are buttons, like in a menu that I got first I focus_set() on the last button and make a functions that circulate colours on and off at on Tab like this:
self.button2.focus_set()
self.button1.bind('<Tab>', self.focus_in)
self.button2.bind('<Tab>', self.focus_out)
def focus_out(self, event):
self.button1.configure(fg_color='white')
self.button2.configure(fg_color='black')
def focus_in(self, event):
self.button1.configure(fg_color='black')
self.button2.configure(fg_color='white')
Whit a custom made buttons it's just matter of replacing fg_color with a image.
If you use a button as an image holder for your logo or so, then just set state='disabled' and it will be omitted.
I am working on a project that is going to use tkinter. I was wondering if there was any way to display a different set of widgets based on a radio button selection and it update as soon as it is clicked
You could, for example, put your sets of widgets in different tkinter Frames and show/hide them on demand as you select different radio buttons.
I'm trying do a very simple task: Make a Button click in Tkinter.
I have an array of Buttons and, when I finish an event, I want to make a Button click event in one of my buttons.
I thought it should be as simple as buttons[2].click(), but that doesn't do anything.
Try calling .invoke() on the button
I am developing a GUI in Vizard in which i am using radio buttons to select correct options, but I have a problem that I cannot solve.
In every group of radio buttons the 1st button always appears to be selected, but is actually not selected. The only way to select it is by choosing another button and then choosing the 1st button again.
Does anyone know how to solve this? I would like that in the beginning none of the buttons are selected.
I don't know Vizard but radio buttons probably have a method or another way of deselecting them similar to radiobutton.deselect() method of Tkinter. Have you looked at their documentation?
Also someone have done this trick, may be you should try it:
Create another radio button in that group, let it be selected by default and make it invisible
QuestionBox = vizinfo.add("") #Add the vizinfo object
#Create an invisible Radio button to be the default selected one, so that one of the visible ones must be chosen by the user
invisibleRadio = QuestionBox.add(viz.RADIO, 0, "")
invisibleRadio.visible(0) #invisible
source: http://forum.worldviz.com/showthread.php?t=1611
In Tkinter I'm trying to make it so when a command is run a widget is automatically selected, so that a one may bind events to the newly selected widget.
Basically I want it so when I press a button a text widget appears. When it appears normally one would have to click the text widget to facilitate the running of events bound to the text widget. I want that behavior to automatically happen when the user clicks the button. So that one does not have to click the button and then the text widget, but simply the button.
I'd also like it so if one started typing after the button was pressed it would automatically start filling the text widget. Again to cut out having to click on the text widget.
What bit of code does the above?
The terminology which describes what you want is "focus" -- you want to set the keyboard focus to your text widget. To do that you need to use the focus_set() and/or focus_force() methods on the text widget.