'Declaration

Public Function GetImageRegion( _
   ByVal pageIndex
The zero based page index. This parameter is not used and can be set to 0.
 As System.Int32, _
   ByVal leftTopRectIndex
The zero based index of left-top rectangle.
 As System.Int32, _
   ByVal rightBottomRectIndex
The zero based index of right-bottom rectangle.
 As System.Int32, _
   ByVal decodingSettings
Decoding settings used for decode the image region of page.
 As System.Int32, _
   ByVal scale
Scale factor. Possible values: 1 - original image rect should be get; N - reduced image rect should be get.
 As DecodingSettings, _
   ByVal imageLoadingProgress
Delegate of the image loading progress. Can be set to null (Nothing in Visual Basic).
 As System.EventHandler(Of ProgressEventArgs), _
   ByVal intermediateImageRequest
Delegate for requesting intermediate image. Can be set to null (Nothing in Visual Basic)
 As System.EventHandler(Of IntermediateImageRequestEventArgs) _
) As Vintasoft.Imaging.VintasoftImage

public Vintasoft.Imaging.VintasoftImage GetImageRegion(
   System.Int32 pageIndex, 
   System.Int32 leftTopRectIndex, 
   System.Int32 rightBottomRectIndex, 
   System.Int32 decodingSettings, 
   DecodingSettings scale, 
   System.EventHandler<ProgressEventArgs> imageLoadingProgress, 
   System.EventHandler<IntermediateImageRequestEventArgs> intermediateImageRequest
)

public: Vintasoft.Imaging.VintasoftImage* GetImageRegion(
   System.Int32 pageIndex, 
   System.Int32 leftTopRectIndex, 
   System.Int32 rightBottomRectIndex, 
   System.Int32 decodingSettings, 
   DecodingSettings* scale, 
   System.EventHandler<ProgressEventArgs*>* imageLoadingProgress, 
   System.EventHandler<IntermediateImageRequestEventArgs*>* intermediateImageRequest
)

public:
Vintasoft.Imaging.VintasoftImage^ GetImageRegion(
   System.Int32 pageIndex, 
   System.Int32 leftTopRectIndex, 
   System.Int32 rightBottomRectIndex, 
   System.Int32 decodingSettings, 
   DecodingSettings^ scale, 
   System.EventHandler<ProgressEventArgs^>^ imageLoadingProgress, 
   System.EventHandler<IntermediateImageRequestEventArgs^>^ intermediateImageRequest
)

Parameters

pageIndex

The zero based page index. This parameter is not used and can be set to 0.

leftTopRectIndex

The zero based index of left-top rectangle.

rightBottomRectIndex

The zero based index of right-bottom rectangle.

decodingSettings

Decoding settings used for decode the image region of page.

scale

Scale factor. Possible values: 1 - original image rect should be get; N - reduced image rect should be get.

imageLoadingProgress

Delegate of the image loading progress. Can be set to null (Nothing in Visual Basic).

intermediateImageRequest

Delegate for requesting intermediate image. Can be set to null (Nothing in Visual Basic)

Return Value

Target Platforms: .NET 10; .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

JpegDecoder Class
JpegDecoder Members

GetImageRectGrid(Int32,DecodingSettings)
GetImageRectScales(Int32,DecodingSettings)