widget

问题 Could someone please explain why when you have an plain widget as one line Code A works Entry(root, width=10).pack(side=LEFT,anchor=W) but when you name it or attach a command to it, Code A no longer works and gives you Error Message B self.my_entry = Entry(root, width=10).pack(side=LEFT,anchor=W) and you must pack using a seperate line? self.my_entry = Entry(root, width=10) self.my_entry.pack(side=LEFT,anchor=W) Code A self.my_entry.get() Error Message B AttributeError: 'NoneType' object has

问题 This is my first tkinter/gui project. I set up a mvc pattern and have a view class for each window of my application. An example for the main window: class ViewMain(tk.Frame): def __init__(self, master): tk.Frame.__init__(self, master, height = 300, width = 500) self.pack(fill='both', expand=True) self.BUTTON_SIZE = {'relheight' : 0.3, 'relwidth' : 0.35} self._set_widgets() self._set_layout() def _set_widgets(self): self.button = tk.Button(self, text = 'Text') def _set_layout(self): self

问题 It seems like ipywidgets.interactive tries to make every imput after the function to be a widget. In the following example, I get two widgets, one for age and one for name : import ipywidgets def greetings(age, name='John'): print(f'{name} is {age} years old') ipywidgets.interactive(greetings, age = widgets.IntSlider(), name = "Bob") My expectation was, that I only get one widget for age , since it is of type ipywidgets.widgets.widget_int.IntSlider whereas "Bob" is of type str (where I don't

问题 I'm using the built-in woocommerce category widget, and at the moment it's displaying both the categories and subcategories. I excluded a category via this code: add_filter( 'woocommerce_product_categories_widget_args', 'organicweb_exclude_widget_category' ); function organicweb_exclude_widget_category( $args ) { // Enter the id of the category you want to exclude in place of '30' $args['exclude'] = array('62' ); return $args; } but the widget still shows it's subcategories. link: http:/

问题 I want to add another widget, in this case a scale widget, to a menu widget in tkinter. Right now the only solutions I see are creating a new command and open a new window with the scale widget or creating the scale widget elsewhere. Both don't seem too appealing to me. Any ideas how to archive this are welcome :) 回答1: You cant add a scrollbar to it, but I have coded something similar to this. Its a hacky way and maybe its hard to understand but I can try to explain. Note as Bryan mentioned

问题 I want to add another widget, in this case a scale widget, to a menu widget in tkinter. Right now the only solutions I see are creating a new command and open a new window with the scale widget or creating the scale widget elsewhere. Both don't seem too appealing to me. Any ideas how to archive this are welcome :) 回答1: You cant add a scrollbar to it, but I have coded something similar to this. Its a hacky way and maybe its hard to understand but I can try to explain. Note as Bryan mentioned

问题 Is there a way that I could change a color of disabled entry widget in python? x = tk.Entry(parent) x.configure({"background": "gray24"}) x.configure({"fg": "white"}) x.configure({"state": "disable"}) The code above only works when the "state" of the widget is "normal". 回答1: Set the entry widget's disabledbackground attribute. x.configure({"disabledbackground": "newcolour"}) Where "newcolour" is the colour you want to see when the entry widget is disabled. You can also use disabledforeground

问题 I need help assigning ids to new kivy widgets that are created from a python function I've tried : old = Label(id = 'old') and : old = Label() old.id = 'old' but it doesn't seem to work because, whenever i try referencing the widgets, it gives me an error 回答1: The ways that you have creating id in Python code are correct. But you cannot reference them using self.ids.old or self.ids['old'] because they don't exist in self.ids . The self.ids dictionary type property contains only all widgets

问题 I'm actually working on a relatively complex GTK+2 application. My application obviously have a main window; then I need to open a new "independent" Window. I need to place the "flying" window in a * precise position* of the screen, exactly at the vertices of a widget (a DrawingArea). I need to place the new window in a precise position of the screen, exactly at the vertices of a widget (a gtk.DrawingArea). So I thought the following algorithm: I get vertex coordinates of the DrawingArea

问题 I have recently discovered that Qt supports custom widgets, and that there are sites that provide this kind of widgets ( like Qt-Apps ). If it is relevant, I am interested in getting this widget. I have downloaded the source code for it, I have extracted it etc. I haven't tried to build it yet, but what I am interested in is having that widget in the widget list in the left side of the Qt Designer so that I can use it my applications. I either don't know how to search what I am looking for,