diff -r 43e37759235e -r 51a74ef9ed63 Symbian3/SDK/Source/GUID-644810EC-7D5E-4569-834B-C207447B88A3.dita --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Symbian3/SDK/Source/GUID-644810EC-7D5E-4569-834B-C207447B88A3.dita Wed Mar 31 11:11:55 2010 +0100 @@ -0,0 +1,60 @@ + + + + + +Multitasking +

The Symbian UI style allows multitasking; that is, working with more than +one application simultaneously. Mobile device users can leave an application +running when they start another application, swap between running applications, +and interact with them.

+

To open a new application without closing the one that is presently being +used, users can press the Home / Menu key to go to the Menu and +select application suites and applications.

+

The first application process remains running in the background while the +user interacts with the second application.

+

The number of simultaneously running (different) applications is limited +only by the available memory in the device. When a new application process +cannot be created because of limited memory, the system can automatically +shut down applications to increase the amount of free memory.

+

To swap active applications, users can:

+ + +Visualized multitasking: task swapping window + + +

The task swapping window displays the applications that are currently running +in the order of their most recent use. By default, the focus is on the first +item in the grid. The task swapping window is a pop-up with a heading (Open +applications). The names of the open applications are displayed +in an Information pop-up. The Information pop-up is launched with a 0.5 second +delay after the focus is moved onto each item, and it remains visible for +1.5 seconds (or until the focus is moved to another item). Menu and home screen +are always visible in the task swapping window. The configuration and visual +appearance of the task swapping window might depend on the product.

+

Users can use the task swapping window to close active applications. In +devices with a keypad, users move the focus onto the application to be closed, +and press the Clear (delete) key. In touch devices, +users tap and hold the item to open a pop-up menu where they can select the Exit option.

+

For implementation information on +using the application +and UI frameworks, see Window +server events.

+ + +Application +framework concepts +Framework +requirements for GUI applications + + \ No newline at end of file