Examples of org.eclipse.swt.widgets.Display.readAndDispatch()

org.eclipse.swt.widgets.Display.readAndDispatch()
Reads an event from the operating system's event queue, dispatches it appropriately, and returns true if there is potentially more work to do, or false if the caller can sleep until another event is placed on the event queue.
In addition to checking the system event queue, this method also checks if any inter-thread messages (created by syncExec() or asyncExec()) are waiting to be processed, and if so handles them before returning.
@return false if the caller can sleep upon return from this method @exception SWTException
- ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
- ERROR_DEVICE_DISPOSED - if the receiver has been disposed
- ERROR_FAILED_EXEC - if an exception occurred while running an inter-thread message
@see #sleep @see #wake

    shell.open();
    shell.layout();


    while (!shell.isDisposed()) {
      try {
        if (!display.readAndDispatch()) {
          display.sleep();
        }
      } catch (Exception e) {
        MessageDialog.openError(shell,
            i18nFile.getText(I18nFile.ERROR),

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    viewer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));


    shell.setText("Configure a coat of arms"); //$NON-NLS-1$
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }

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      }
    });


    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }


    }
    display.dispose();

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      });


    }// end of else


    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    image.dispose();
    shell.dispose();

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        true));


    shell.setText("Map"); //$NON-NLS-1$
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }

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            IBoxEditAction action = editPolicy.getAction().getBoxEditAction();
            action.init(this);
            action.perform();
            Display display = getViewer().getControl().getDisplay();
            while( !action.isDone() ){
                if( !display.readAndDispatch() ){
                    try {
                        Thread.sleep(200);
                    } catch (InterruptedException e) {
                        break;
                    }

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            public void run(IProgressMonitor monitor) throws InvocationTargetException,
                    InterruptedException {
                monitor.beginTask(message, IProgressMonitor.UNKNOWN);
                while (committing) {
                    if (!display.readAndDispatch()) {
                        Thread.sleep(200);
                    }
                }
            }
        };

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            });


            Display display = Display.getCurrent();
            while( !done[0] ) {
                if (display == null || !display.readAndDispatch()) {
                    try {
                        Thread.sleep(200);
                    } catch (InterruptedException e) {
                        break;
                    }

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            display = loopShell.getDisplay();
        }


        while (loopShell != null && !loopShell.isDisposed()) {
            try {
                if (!display.readAndDispatch()) {
                    display.sleep();
                }
            } catch (Throwable e) {
                UiPlugin.log( "Exception in UI thread while waiting", e); //$NON-NLS-1$
            }

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        } else {
            while( !condition.isTrue() ) {
                Thread.yield();
                if (timeout > 0 && System.currentTimeMillis() - start > timeout)
                    throw new InterruptedException("Timed out waiting for condition " + condition); //$NON-NLS-1$
                if (!current.readAndDispatch())
                    synchronized (mutex2) {
                        mutex2.wait(interval);
                    }
            }

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