Combo box

A combo box is a user interface control (widget) in a graphical user interface that is a combination of a single-line textbox and a menu. It is also commonly referred to as a drop down box, drop down list, or listbox. When the combo box is inactive, it shows only its textbox aspect (see image, right), which bears the current value of the control, and (usually) some mechanism to show the rest of the choices is also showing (the black downwards arrowhead on the gray button in the first image on the right). In most combo boxes, it is not necessary to click a specific region (e.g. the arrow) to make the rest of the choices appear — clicking anywhere within the control will activate the list.

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The list of values may be longer than would be reasonable to display all at once. If this is the case, a scrollbar is visible in the list component. A combo box always forms a scrollbar for this purpose; there are other, similar controls identical to combo boxes in nearly all respects except this (see #Similar Controls, below).

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Widget: Widget is a general-purpose term, or placeholder name, for any unspecified device, including those that have not yet been invented. It is commonly used in textbook and other examples where the identity of the product or function is irrelevant and could be distracting: students may be asked to design...

Graphical user interface: A graphical user interface (or GUI, sometimes pronounced "gooey") is a method of interacting with a computer through a metaphor of direct manipulation of graphical images and widgets in addition to text....

Textbox: REDIRECT Text box...

Combo box related Images and Photos (experimental)

Box, The (DVD)	Box, The (Blu-ray)	Box Seats	The Box
The Box	Sushi Combo	Hot Box	Boom Box
Boom Box	Wrong Box, The (1966)	Snuff-Box	Sauce Box