The tkinter. If Python has not been compiled against Tk 8. The former method using Tk 8. The basic idea for tkinter.
25.2. tkinter.ttk — Tk themed widgets
That code causes several tkinter. This has the direct benefit of using the new widgets which gives a better look and feel across platforms; however, the replacement widgets are not completely compatible. Instead, use the ttk. Style class for improved styling effects. And all them are subclasses of Widget. Using the Ttk widgets gives the application an improved look and feel.
As discussed above, there are differences in how the styling is coded. For more information about TtkStylingsee the Style class documentation. Widget defines standard options and methods supported by Tk themed widgets and is not supposed to be directly instantiated. All the ttk Widgets accepts the following options:. Usually this option consists of the method Scrollbar. This will cause the scrollbar to be updated whenever the view in the window changes.
Specifies how to display the image relative to the text, in the case both text and images options are present. Valid values are:. A state specification is a sequence of state names, optionally prefixed with an exclamation point indicating that the bit is off. Besides the methods described below, the ttk. Widget supports the methods tkinter. Returns the name of the element at position x yor the empty string if the point does not lie within any element.
The ttk. Combobox widget combines a text field with a pop-down list of values. This widget is a subclass of Entry. Besides the methods inherited from Widget : Widget.A ttk::combobox combines a text field with a pop-down list of values; the user may select the value of the text field from among the values in the list. The combobox widget also supports the following ttk::entry widget subcommands see ttk::entry n for details :. The combobox widget also supports the following generic ttk::widget widget subcommands see ttk::widget n for details :.
If the selection action unposts the listbox, this event is delivered after the listbox is unposted. If set, the widget selection is linked to the X selection. Must be one of leftcenteror right. The -postcommand script may specify the -values to display. In the readonly state, the value may not be edited directly, and the user can only select one of the -values from the dropdown list.
In the normal state, the text field is directly editable. In the disabled state, no interaction is possible. Whenever the variable changes value the widget value is updated, and vice versa.
Boolean value. Specifies how the text is aligned within the widget. Specifies the height of the pop-down listbox, in rows. A Tcl script to evaluate immediately before displaying the listbox.
One of normalreadonlyor disabled. Specifies the name of a global variable whose value is linked to the widget value. Specifies the list of values to display in the drop-down listbox.
Specifies an integer value indicating the desired width of the entry window, in average-size characters of the widget's font.The ttk module provides access to the Tk themed widget set, which has been introduced in Tk 8.
If Python is not compiled against Tk 8. However, some features provided by the new Tk, like anti-aliased font rendering under X11, window transparency on X11 you will need a composition window manager will be missing.
Combobox Widget in tkinter | Python
Use ttk. Style to achieve the same or better styling. A text which talks in Tcl terms about differences typically found when converting applications to use the new widgets. All of these classes are subclasses of Widget. As said previously, you will notice changes in look-and-feel as well in the styling code. To demonstrate the latter, a very simple example is shown below.
For more information about TtkStyling read the Style class documentation. Widget defines standard options and methods supported by Tk themed widgets and is not supposed to be directly instantiated.
All the ttk widgets accept the following options:. Specifies the window class. This is a read-only option which may only be specified when the window is created. Specifies the mouse cursor to be used for the widget. If set to the empty string the defaultthe cursor is inherited from the parent widget. Determines whether the window accepts the focus during keyboard traversal. If 0, the window should be skipped entirely during keyboard traversal.
If 1, the window should receive the input focus as long as it is viewable. An empty string means that the traversal scripts make the decision about whether or not to focus on the window.This widget is a combination of an Entry and a drop-down menu.
In your application, you will see the usual text entry area, with a downward-pointing arrow. When the user clicks on the arrow, a drop-down menu appears. If the user clicks on one, that choice replaces the current contents of the entry.
However, the user may still type text directly into the entry when it has focusor edit the current text.PYTHON TKINTER COMBOBOX
To create a ttk. Combobox widget as the child of a given parent widget:. Combobox options. Methods on a ttk. To select one of the elements of the values option, pass the index of that element as the argument to this method. If you do not supply an argument, the returned value is the index of the current entry text in the values list, or -1 if the current entry text is not in the values list. Set the current text in the widget to value. The states of a ttk. Combobox widget affect its operation.
To interrogate or change states, see the. If the widget is in the disabled state, no user action will change the contents. If the widget is in the!
Tkinter 8. This may be specified when the widget is created, but cannot be changed later. If there are more values than this number, the drop-down menu will automatically include a vertical scrollbar.
Values may be tk. LEFT to left-justify; tk. RIGHT to right-justify. This callback may change the values option; if so, the changes will appear in the drop-down menu. The actual width will be this number times the average width of a character in the effective font.Could it be that with a readonly combobox the problem is not the selection but the relatively strong focus-indicator?
With this workarround you lose the ability to control your program by keyboard. To do it right you would have to change the style of the focus-highlighting. I wrote a small farad converter to learn GUI programming. It works great, looks fine-ish.
The only problem is I can't seem to figure out how to control this strange highlighting that comes up on my ttk. Combobox selections. I did use a ttk. Stylebut it only changed the colors of the ttk. Combobox background, entries, etc. To solve your problem, you can either simply assign a function object to call whenever the event occurs option 1, which is the advisable one or use lambda functions option 2. Note the absence of after callback in: cbox. This changes the behavior of the comboboxes globally.
In the following demo from which the screenshot of the question was made I defined a custom style for the nicely working combobox as "Alt. TCombobox" and used that one for it:. How to control the tkinter combobox selection highlighting 4 Could it be that with a readonly combobox the problem is not the selection but the relatively strong focus-indicator? I'm talking about what's seen there on the text "microfarads uF ". It'd be fine, if it highlighted the entire box; but I'd rather have it gone completely.
How can I manipulate a ttk. Combobox 's selection highlight? Thanks you for the posts. When you do: cbox. Style s.The tkinter. If Python has not been compiled against Tk 8. The former method using Tk 8. The basic idea for tkinter. That code causes several tkinter. This has the direct benefit of using the new widgets which gives a better look and feel across platforms; however, the replacement widgets are not completely compatible.
Instead, use the ttk. Style class for improved styling effects. And all them are subclasses of Widget. Using the Ttk widgets gives the application an improved look and feel. As discussed above, there are differences in how the styling is coded. For more information about TtkStylingsee the Style class documentation. Widget defines standard options and methods supported by Tk themed widgets and is not supposed to be directly instantiated.
All the ttk Widgets accepts the following options:. The following options are supported by widgets that are controlled by a scrollbar. Usually this option consists of the method Scrollbar. This will cause the scrollbar to be updated whenever the view in the window changes.
The following options are supported by labels, buttons and other button-like widgets. Specifies how to display the image relative to the text, in the case both text and images options are present. Valid values are:. A state specification is a sequence of state names, optionally prefixed with an exclamation point indicating that the bit is off.Tkinter Combobox is the drop-down list for the user to choose from.
It is a combination of Entry and drop-down widgets as you can see. When you click the arrow on the left side, you will see a drop-down menu showing all the choices, and if you click on one, it will replace the current Entry contents. Tkinter Combobox widget is in the ttk module of Tkinter, therefore, you need to import this module to use this widget. It creates the Tkinter combobox widget instance and also assigns the values that will appear in the drop-down list.
Normally, the default item showing in the combobox is the first element in the values list. You could also change it to any element by using current index method. You could also use current to get the index of the currently selected element, and use get method to get the element itself. It needs to set fonts for both Combobox and also its list box to achieve the goal that fonts of Combobox is correctly configured.
Tkinter font could be specified with a tuple with options of font-familysize, weight bold or normalslant italic or romanetc. We also need to specify the font of the list box of Combobox otherwise the text in the list of Combobox still uses the system default font but not the fault specified to the Combobox. The combobox callback function binding is different from the widgets introduced in the last chapters.
The list of choices in Tkinter combobox could be dynamically updated with the option postcommand that executes the given function before displaying the pop-down list of choices. The combobox shows empty after GUI starts and shows the given months as above after the user clicks the arrow in the combobox. The content of the elements in the Combobox examples shown above is editable because the default state is normal that makes the text field directly editable.
If you change the state from readonly to disabledthe Combobox is grayed out as shown below. Tk app.