void Win7UIAClientForm_FormClosed(object sender, FormClosedEventArgs e)
{
if (_synth != null)
{
_synth.SpeakAsyncCancelAll();
_synth = null;
}
if (_highlight != null)
{
_highlight.Uninitialize();
_highlight = null;
}
if (_sampleFocusEventHandler != null)
{
_sampleFocusEventHandler.Uninitialize();
_sampleFocusEventHandler = null;
}
// Give any background threads created on startup a chance to close down gracefully.
Thread.Sleep(200);
}
void InitializeSample()
{
// Initialize the highlighting used to magnify the element with focus.
_highlight = new Highlight();
_highlight.Initialize();
try
{
_synth = new SpeechSynthesizer();
}
catch
{
// Allow this sample to run even if speech is not available.
_synth = null;
}
// Initialize the event handler which is called when focus changes.
SampleUIEventHandlerDelegate sampleUIEventHandlerDelegate = new SampleUIEventHandlerDelegate(HandleEventOnUIThread);
_sampleFocusEventHandler = new SampleFocusEventHandler(this, sampleUIEventHandlerDelegate);
// Now tell the sample event handler to register for events from UIA.
_sampleFocusEventHandler.StartEventHandler();
}
/////////////////////////////////////////////////////////////////////////////////////////////////
//
// s_ThreadProc()
//
// Static entry point for the thread on which the event handlers will be added and removed.
//
/////////////////////////////////////////////////////////////////////////////////////////////////
public static void s_ThreadProc(object data)
{
SampleFocusEventHandler eventHandler = (SampleFocusEventHandler)data;
eventHandler.ThreadProc();
}
