ReadLoadResolutionsAsync(ILeadStream,Int32) Method

Summary

Examines a stream to determine which resolutions it contains.

Syntax

WinRT C#

C++

public IAsyncOperation<IVector<LeadSize>> ReadLoadResolutionsAsync(  
   ILeadStream stream, 
   int pageNumber 
)

Public Overloads Function ReadLoadResolutionsAsync( _ 
   ByVal stream As ILeadStream, _ 
   ByVal pageNumber As Integer _ 
) As IAsyncOperation(Of IVector(Of LeadSize))

public IAsyncOperation<IVector<LeadSize>> ReadLoadResolutionsAsync(  
   ILeadStream stream, 
   int pageNumber 
)

 function Leadtools.Codecs.RasterCodecs.ReadLoadResolutionsAsync(ILeadStream,Int32)(  
   stream , 
   pageNumber  
)

public: 
IAsyncOperation<IVector<LeadSize>^>^ ReadLoadResolutionsAsync(  
   ILeadStream^ stream, 
   int pageNumber 
)

Parameters

stream
A ILeadStream containing the data of the image file to query.

pageNumber
An Int32 that indicates the page number.

Return Value

When this method completes, it returns the available resolutions as an array of LeadSize structures.

Remarks

A FlashPix, PhotoCD, ECW, JPEG 2000 or JBIG/JBIG2 file can contain more than one copy of the same image, each at a different physical resolution (width and height in pixels).

The pages numbers start with 1, so set pageNumber to 2 to read the resolutions from the second page. If you set pageNumber to 1, the function behaves like the equivalent function without the pageNumber parameter.

After you get the available resolutions, you can use any of the following to specify the one to be loaded: