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PdfRenderingSettings.UseExternalDctDecoder Property

Specifies whether the external Windows Imaging Component (WIC) decoder can be used to optimize JPEG image decoding.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v24.1.Core.dll

NuGet Package: DevExpress.Pdf.Core


public static bool UseExternalDctDecoder { get; set; }

Property Value

Type Description

true, to allow a use of the external DCT decoder to optimize JPEG image decoding; false, the GDI+ decoder is used for JPEG image decoding. The default value is true.


You can prohibit using a Windows Imaging Component (WIC) DCT decoder in any situation by setting the UseExternalDctDecoder property to false. In this case, the GDI+ decoder is always used for JPEG decoding.


This property must be specified before the PDF Viewer or PDF Document Processor is initialized. Otherwise, this property won’t have any effect in your application.

See Also