MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guia do Utilizador descarregar pdf (Página 658)

100

101

14 Manage Ca llback Executio n

is taken into account only if the Inter ruptible property of the executing

callback’s object is

off, i.e., the executing callback is not interruptible.

If a noninterruptible callback is executing and an eve nt (such as a mous e

click) triggers a new callback, MATLAB software examines the value of the

BusyAction property of the object that g enerated the new callback:

• If the

BusyAction value is 'qu eue' , the requested callback is added to the

event queue and executes in its turn when the executing callback finishes

execution.

• If the value is

'cancel', the event is discarded and the requested callback

does not execute.

If an interruptible callback is executing, the requested callback runs when

the executing callback terminates or calls

drawnow, figure, getframe, pause,

waitfor.TheBusyAction property of the requested callback’s o bject has

no effect.

Example

This example dem onstrates control of callback interruption using the

Interruptible and BusyAction properties. It creates two GUIs:

• The first GUI contains two push buttons:

- Wait (interruptible) whose Interruptible property is on

- Wait (noninterruptib le)whose Interrupti ble property is off

Clicking either button triggers the button’s Callback callback, which

creates and updates a waitbar.

14-6

1 2 ... 653 654 655 656 657 658 659 660 661 662 663 ... 758 759

Comentários a estes Manuais

Sem comentários

MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guia do Utilizador Página 658

Comentários a estes Manuais

Manuais e produtos relacionados com Software MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE