搭配 InkEdit 使用應用程式字典

若要建立應用程式字典，必須設定 RecognizerContext 物件的 WordList 屬性。 InkEdit 控件不會公開 RecognizerContext 物件，因此無法直接設定 InkEdit 控件 RecognizerContext 物件的 WordList 属性。

若要搭配 InkEdit 控制項使用應用程式字典，您必須將筆劃從 InkEdit 控制項取出，將它們傳遞至新的 RecognizerContext 物件，並將 WordList 屬性設定為包含應用程式字典的 WordList，儲存此 RecognizerContext 物件的結果，然後將結果傳回 InkEdit 控制項。

例

下列 C# 程式代碼示範這項技術的範例。

private RecognizerContext rc;
private WordList wl;
private int wlSelStart;
private int wlSelLen;
private bool isRecoPending = false;

private void Form1_Load(object sender, EventArgs e)
{
  //event handlers must be attached for dictionary to work.
  inkEdit1.Recognition += new Microsoft.Ink.InkEditRecognitionEventHandler(inkEdit1_Recognition);
  inkEdit1.TextChanged += new EventHandler(inkEdit1_TextChanged);

  //create a WordList that contains the application dictionary
  wl = new WordList();
  //...
  //Add dictionary terms to the WordList
  //...

  // create a RecognizerContext for the WordList
  rc = inkEdit1.Recognizer.CreateRecognizerContext();
  rc.Factoid = Factoid.WordList;

  //set the RecognizerContext WordList to the newly created WordList
  rc.WordList = wl;

  //create a delegate for the new RecognizerContext
  rc.RecognitionWithAlternates += new

  RecognizerContextRecognitionWithAlternatesEventHandler(rc_Recognition);
}

void inkEdit1_TextChanged(object sender, EventArgs e)
{
  if (isRecoPending)
  {
    isRecoPending = false;
    rc.BackgroundRecognizeWithAlternates();
  }
}

private void inkEdit1_Recognition(object sender,
Microsoft.Ink.InkEditRecognitionEventArgs e)
{
  //store the start of the selection in wlSelStart
  wlSelStart = inkEdit1.SelectionStart;

  //store the length of the selection in wlSelLen
  wlSelLen = e.RecognitionResult.TopString.Length;

  //copy the strokes from the InkEdit control into the new
  // RecognizerContext
  rc.Strokes = e.RecognitionResult.Strokes.Ink.Clone().Strokes;
  isRecoPending = true;
}

private void rc_Recognition(object sender,
Microsoft.Ink.RecognizerContextRecognitionWithAlternatesEventArgs e)
{
  if (inkEdit1.InvokeRequired)
  {
    inkEdit1.Invoke(new RecognizerContextRecognitionWithAlternatesEventHandler(rc_Recognition),
      new object[] { sender, e });
    return;
  }

  //set the insertion point in the InkEdit control
  inkEdit1.SelectionStart = wlSelStart;
  inkEdit1.SelectionLength = wlSelLen;
  //insert the result from the new RecognizerContext 
  //into the InkEdit control
  inkEdit1.SelectedText = e.Result.TopString;
  inkEdit1.SelectionStart = inkEdit1.SelectionStart +
  e.Result.TopString.Length;
}

// Event handler for the form's closed event
private void Form1_Closed(object sender, System.EventArgs e)
{
  inkEdit1.Dispose();
  inkEdit1 = null;
  rc.Dispose();
  rc = null;
}

相關主題

InkEdit 控制項

Microsoft.Ink.RecognizerContext 類別

Microsoft.Ink.Wordlist 類別