Technical restrictions for .NET apps

• To display your app's end user online help in the personalization & help window, make sure it can be loaded in an iframe. For more information, see: Your app's end user online help.

• The maximum supported total amount of text in all edit controls is approximately 500,000 characters. Speech recognition might not be available if more than this amount of text is present in all speech-enabled edit controls connected to a VuiController.

• Supported controls:

  • Windows Forms: System.Windows.Forms.TextBoxBase:

    System.Windows.Forms.TextBox

    System.Windows.Forms.MaskedTextBox

    System.Windows.Forms.RichTextBox

  • Windows Presentation Framework:

    System.Windows.Controls.TextBox

    TX Text Control .NET for Windows Presentation Framework: TXTextControl.WPF.TextControl

    TX Text Control .NET for Windows Forms: TXTextControl.Windows.Forms.TextControl

For more information on supported versions, see the release notes.

• Controls that aren't supported:

  Windows Forms controls hosted by a Windows Presentation Foundation app

  Windows Presentation Foundation controls hosted by a Windows Forms app

• Field navigation via the recording device's fast forward and fast rewind buttons is supported; however, hardware-specific restrictions apply (for example, pressing the fast forward button might switch off recording for some microphones).

• Sometimes web proxy servers can lack the throughput to properly process Dragon Medical SpeechKit to Dragon Medical Server traffic. This can result in apparent loss of audio, lack of response by the Dragon Medical Recognition Service plus other similar symptoms. We recommend connecting clients directly to the Dragon Medical Recognition Service instead of going through a web proxy server.

• Only high-quality Bluetooth microphones work properly with Dragon Medical SpeechKit.

  Some Bluetooth adapters don't provide a sufficient level of quality for speech recognition even with high-quality Bluetooth devices. Make sure to verify your combination of Bluetooth microphone and Bluetooth adapter before using it for speech recognition.

• Some Philips SpeechMike button presses might not take effect when the main thread is busy or blocked. This can occur in apps that open the session object from a thread other than the app's main thread.

  Note

  This issue is caused by the restriction of the Philips SpeechMike COM components to the single-threaded COM threading model, which requires these components to be executed on the app's main thread. Workaround (some apps): Specify threadingModel="Apartment" for all comClass entries of the SpMikeCtrl.dll in the Philips.SpeechMike.manifest. This workaround isn't supported by Philips; any complaints about this restriction should be sent to Philips.

• Shadow copying isn't supported for apps integrating the .NET SDK. Dragon Medical SpeechKit won't work if shadow copying is enabled.