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Microsoft Speech SDK

Interface: ISpeechRecognizer

DisplayUI Method

The DisplayUI method initiates the display of the specified UI.

The speech recognition (SR) and text-to-speech (TTS) engines are capable of displaying and running various user interfaces (UI). These displays assist with different aspects of the speech environment:

Many of these UIs are available using Speech properties in Control Panel. In addition, engines are capable of requesting specific UIs be run to improve a situation. For example, the SR could request more user training if the recognitions are consistently poor.

Engines are not required to support UIs and not all engines will have the same UIs. Consult the manufacturer's engine documentation for specific details. An application may call ISpeechRecognizer.IsUISupported before attempting to invoke a particular UI to see if the engine supports it. Invoking unsupported UIs will cause a run-time error. If the UI is available, use ISpeechRecognizer.DisplayUI to invoke the display.

SpeechRecognizer.DisplayUI(
     hWndParent As Long,
     Title As String,
     TypeOfUI As String,
     [ExtraData As Variant = Nothing]
)

Parameters

hWndParent

Specifies the window handle of the owning window.

Title

Specifies the caption used for the UI window.

TypeOfUI

A String specifying the name of the UI to display. For a list of available SAPI 5 UI, see Engine User Interfaces.

ExtraData

[Optional] Specifies the ExtraData. This information is unique to the application and may be used to provide additional or more specific information to the UI. By default, the Nothing value is used and indicates the UI does not use any additional information provided by this method.

Return Value

None.

Remarks

See ISpeechRecognizer.IsUISupported and ISpeechRecoContext.RequestUI for additional information.

Example

The following Visual Basic form code demonstrates the use of the DisplayUI event. The application runs the training wizard, the same one available using Speech properties in Control Panel.

To run this code, create a form with the following control:

Paste this code into the Declarations section of the form.

Public WithEvents RC As SpSharedRecoContext
Public myGrammar As ISpeechRecoGrammar

Private Sub Command1_Click()
    Dim theRecognitizer As ISpeechRecognizer
    Set theRecognizer = RC.Recognizer
    
    theRecognizer.DisplayUI Form1.hWnd, "My App's Additional Training", SpeechUserTraining, vbNullString
End Sub

Private Sub Form_Load()
    Set RC = New SpSharedRecoContext
    
    Set myGrammar = RC.CreateGrammar
    myGrammar.DictationSetState SGDSActive
End Sub