Overridable Function GetSupportedLanguageGroups() As OcrLanguageGroup()

Visual Basic (Usage)	Copy Code
Dim instance As IOcrLanguageManager Dim value() As OcrLanguageGroup   value = instance.GetSupportedLanguageGroups()

virtual OcrLanguageGroup[] GetSupportedLanguageGroups()

virtual array<OcrLanguageGroup>^ GetSupportedLanguageGroups(); 

Return Value

This example will list the language groups installed on the system.

Visual Basic

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Public Sub OcrLanguageGroupsExample()    ' Unlock the support needed for LEADTOOLS Plus OCR engine    RasterSupport.Unlock(RasterSupportType.Document, "Replace with your own key here")    RasterSupport.Unlock(RasterSupportType.OcrPlus, "Replace with your own key here")    RasterSupport.Unlock(RasterSupportType.OcrPlusPdfLeadOutput, "Replace with your own key here")    ' Create an instance of the engine    Using ocrEngine As IOcrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Plus, False)       ' Start the engine using default parameters       ocrEngine.Startup(Nothing, Nothing, Nothing, Nothing)       ' Get and show the supported (installed) language groups       Dim supportedGroups() As OcrLanguageGroup = ocrEngine.LanguageManager.GetSupportedLanguageGroups()       Console.WriteLine("Supported (installed) groups:")       For Each supportedGroup As OcrLanguageGroup In supportedGroups          Console.WriteLine(" {0}", supportedGroup)       Next       ' Show that you can use IsLanguageGroupSupported to check for a specific group       ' Check if Latin1 is installed       Dim latin1Installed As Boolean = ocrEngine.LanguageManager.IsLanguageGroupSupported(OcrLanguageGroup.Latin1)       If (latin1Installed) Then          Console.WriteLine("Latin1 is installed")       End If       ocrEngine.Shutdown()    End Using End Sub

C#

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public void OcrLanguageGroupsExample()  {     // Unlock the support needed for LEADTOOLS Plus OCR engine     RasterSupport.Unlock(RasterSupportType.Document, "Replace with your own key here");     RasterSupport.Unlock(RasterSupportType.OcrPlus, "Replace with your own key here");     RasterSupport.Unlock(RasterSupportType.OcrPlusPdfLeadOutput, "Replace with your own key here");     // Create an instance of the engine     using(IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Plus, false))     {        // Start the engine using default parameters        ocrEngine.Startup(null, null, null, null);          // Get and show the supported (installed) language groups        OcrLanguageGroup[] supportedGroups = ocrEngine.LanguageManager.GetSupportedLanguageGroups();          Console.WriteLine("Supported (installed) groups:");        foreach(OcrLanguageGroup supportedGroup in supportedGroups)        {           Console.WriteLine("  {0}", supportedGroup);        }          // Show that you can use IsLanguageGroupSupported to check for a specific group          // Check if Latin1 is installed        bool latin1Installed = ocrEngine.LanguageManager.IsLanguageGroupSupported(OcrLanguageGroup.Latin1);        if(latin1Installed)           Console.WriteLine("Latin1 is installed");          ocrEngine.Shutdown();     }  }

Use the IsLanguageGroupSupported method to determine if an individual language group is installed on the system.

The various LEADTOOLS OCR engines ships with default OCR language packs. Additional language packs can be downloaded from the LEAD Technologies' website at http://www.leadtools.com.

The language environment defines the character set(s) recognized by the OCR engine. For example, if you enable the English and German languages, the German characters (ä, Ä, é, ö, Ö, ü, Ü, ß) will be combined with the English characters to define the set recognized by the engine. The language environment does not perform spell checking however, for that, refer to IOcrSpellCheckManager.

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Reference