ISpeechPhraseProperty FirstElement Property (SAPI 5.3)
The FirstElement property returns the offset of the first spoken element spanned by this property.
|Set:||(This property is read-only)|
|Get:||Long = ISpeechPhraseProperty.FirstElement|
- The owning object.
Set: (This property is read-only)
Get: A Long variable that gets the property.
The following code demonstrates retrieving the Name property from a command and control recognition.
To run this code, create a form with the following controls:
- Two labels called Label1 and Label2
Paste this code into the Declarations section of the form.
The Form_Load procedure creates and activates a dictation grammar. The grammar file sol.xml is the solitaire grammar provided with the SDK. The path listed is for a standard SDK install and may be changed as needed.
If "play the red five" has been recognized, the application will display the recognized text in label1. Label2 displays the names of the two properties used from the grammar along with the actual word or phrase which activated the rule. In this case, the rules would be "color=red" and "rank=five." The number of elements in the phrase matching the property is displayed in parenthesis. It is possible for more than one word to activate a rule for a property. In the case of sol.xml, only single words are used. However, if the file were changed, for example, so that the ColorRed definition becomes "red card" instead of just "red", then the expression "play the red card five" would display two elements for the property.
Option Explicit Public WithEvents RC As SpSharedRecoContext Public myGrammar As ISpeechRecoGrammar Private Sub Form_Load() On Error GoTo EH Set RC = New SpSharedRecoContext Set myGrammar = RC.CreateGrammar myGrammar.CmdLoadFromFile "C:\Program Files\Microsoft Speech SDK 5.3\Samples\Common\sol.xml", SLODynamic myGrammar.CmdSetRuleIdState 0, SGDSActive EH: If Err.Number Then ShowErrMsg End Sub Private Sub RC_FalseRecognition _ (ByVal StreamNumber As Long, _ ByVal StreamPosition As Variant, _ ByVal Result As SpeechLib.ISpeechRecoResult) Beep Label1.Caption = "(no recognition)" Label2.Caption = "" End Sub Private Sub RC_Recognition _ (ByVal StreamNumber As Long, _ ByVal StreamPosition As Variant, _ ByVal RecognitionType As SpeechLib.SpeechRecognitionType, _ ByVal Result As SpeechLib.ISpeechRecoResult) Dim i, j, theFirstElement, theNumberOfElements As Long Dim theString As String On Error GoTo EH Label1.Caption = Result.PhraseInfo.GetText & vbCrLf Label2.Caption = "Rule Properties Found : " & Result.PhraseInfo.Properties.Count & vbCrLf For i = 0 To Result.PhraseInfo.Properties.Count - 1 Label2.Caption = Label2.Caption & _ "Rules Name: " & Result.PhraseInfo.Properties.Item(i).Name theFirstElement = Result.PhraseInfo.Properties.Item(i).FirstElement theNumberOfElements = Result.PhraseInfo.Properties.Item(i).NumberOfElements theString = "" For j = 0 To theNumberOfElements - 1 theString = theString & Result.PhraseInfo.Elements(theFirstElement + j).DisplayText theString = theString & " " Next Label2.Caption = Label2.Caption & _ " = " & theString & " (" & theNumberOfElements & ")" & vbCrLf Next EH: If Err.Number Then ShowErrMsg End Sub Private Sub ShowErrMsg() ' Declare identifiers: Const NL = vbNewLine Dim T As String T = "Desc: " & Err.Description & NL T = T & "Err #: " & Err.Number MsgBox T, vbExclamation, "Run-Time Error" End End Sub