Dialog Box Types

DEFINITION

DIALOG BOX:In Graphical User Interface(GUI), a dialog box is a special window, used in user interfaces to display information to the user, or to get a response if needed. They are so-called because they form a dialog between the computer and the user—either informing the user of something, or requesting input from the user, or both. It provides controls that allow you to specify how to carry out an action.
And it does not contain the Maximize or minimize button in it .And there are two possibilities in a Dialog .User can either select or he can quit it .
It is mainly classified as three types .....

1)Modal Dialog Box.

2)System Modal Dialog Box.

3)Modeless.


*MODAL DIALOG BOX:
A Modal dialog box is one that the user must first close in order to have access to any other framed window or dialog box of the same application. Some applications require various dialog boxes to complete their functionality. When in case, you may need to call one dialog box from another and display it as modal.The Example for Modal Dialog box is "Paragraph Dialog box " in WordPad...
*MODELESS DIALOG BOX :
A dialog box is referred to as modeless if the user does not have to close it in order to continue using the application that owns the dialog box.The Find (and the Replace) dialog box of WordPad (also the Find and the Replace dialog boxes of most applications) is an example of a modeless dialog box. If it is opened, the user does not have to close it in order to use the application or the document in the background.Since the modeless dialog box does not display its button on the task bar, the user should know that the dialog box is opened. To make the presence of a modeless dialog box obvious to the user, it typically displays on top of its host application until the user closes it.

*SYSTEM MODAL DIALOG BOX:
System Modal Dialog Box is a Dialog Box which does not allow the user to navigate from the Dialog .Until ,The user finishes the task in the task they cant do any work in the system .This type of dialog Box is named as System Dialog Box .Foe Example :the Login Dialog of the Xp,ShutDown Dialog Box.Until the Enters the Option he cant navigate to any other page .The Images of these typesof Dialog Box is given Below: