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Tkinter is a binding to the Tk GUI toolkit for Python. It is the standard Python interface to the Tk GUI toolkit, [ 1 ] and is Python's de facto standard GUI. [ 2 ] Tkinter is included with standard Linux , Microsoft Windows and macOS installs of Python.
Its contents are only revealed when the user selects it with a pointer. The user is then able to select the items within the pull-down menu. When the user clicks elsewhere the content of the menu will disappear. [5] A context menu is invisible until the user performs a specific mouse action, like pressing the right mouse button. When the ...
Setting or clearing ("unclicking") a checkbox changes the checkbox's state with no other side-effects.Violating this guideline by associating additional actions with the change of state frequently confuses users, because they are used to configuring data in entry controls such as text boxes, radio buttons, and checkboxes and then invoking an action control such as a push button to initiate the ...
Tree view allows users to interact with hierarchical data in a variety of ways, such as : expanding and collapsing nodes to reveal or to hide their child nodes and thus navigate through the tree structure according to one's needs.
A list box is a graphical control element that allows the user to select one or more items from a list contained within a static, multiple line text box. The user clicks inside the box on an item to select it, sometimes in combination with the ⇧ Shift or Ctrl in order to make multiple selections. "Control-clicking" an item that has already ...
Ext JS is a composition of classes that has many capabilities. Some examples: an abstract layer for browsers (e.g. Ext.isArray that can be used as a replacement for Array.isArray)
One proposed approach is to design every input element as a self-contained, task-oriented interaction, guided by its own specific requirements rather than by the global state of the entire application. For example, required elements might be preceded with an asterisk, elements with invalid data might acquire a red border, and so on. With this ...
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