Windows

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Requesters

Requesters are a special kind of windows. They either confront the user with some information or request some information. Requesters always interrupt the user's normal workflow, so they should only be used either to inform him of some important event or to request an information, without which the application can't continue to work. This kind of requester is called modal requester.

Examples of informational requesters are requesters that report errors (like failing to open a file) or about requesters, which show information about the program, when requested by the user.

Like the name indicates, requesters can also request information from the user, like a file name (using file-requesters), his name or a simple yes/no decision ("Really quit application?").

Requesters should only pop-up, if an application can't go on without knowing that the user learned about a certain fact or without getting a certain kind of information. Therefore, most requesters will block the application. That means that they will not listen to any input, except that in the requester. An exception are requesters that are explicitly requested by the user, like most file-requesters or about-requesters. Normally, these should not block the application.

Screens

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Gadgets

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