MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Specifiche Scaricare il pdf (Pagina 157)

Interrupting Executing Callbacks

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2 If the event at the top of the queue calls for a figure window redraw,

MATLAB performs the redraw and proceeds to the next event in the queue.

3 If the event at the top of the queue would cause a callback to execute,

MATLAB determines whether the object whose callback is suspended is

interruptible.

4 If the callback is interruptible, MATLAB executes the callback associated

with the interrupting event. If that callback contains a

drawnow, figure,

getframe, pause, or waitfor command, MATLAB repeats these steps for the

remaining events in the queue.

5 If the callback is not interruptible, MATLAB checks the BusyAction

property of the object that generated the event.

a If BusyAction is queue, MATLAB leaves the event in the event queue.

b If BusyAction is cancel, MATLAB discards the event.

6 When all events have been processed (either left in the queue, discarded, or

handled as a redraw), MATLAB resumes execution of the interrupted

callback routine.

This process continues until the callback completes execution. When MATLAB

returns the prompt to the command window, all events have been processed.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Specifiche Pagina 157