Delegate PDFViewThumbAsyncDelegate

A delegate that will be called after GetThumbAsync retrieves a thumbnail from the on-disk thumbnail cache.

Namespace: pdftron.PDF

Assembly: PDFNet.dll

Syntax

public delegate void PDFViewThumbAsyncDelegate(int page_num, bool was_thumb_found, Bitmap thumb_buf, int thumb_width, int thumb_height, object custom_data);

Parameters

Type	Name	Description
System.Int32	page_num	The page number of the thumbnail.
System.Boolean	was_thumb_found	A boolean value which is true if the thumbnail could be retrieved from the persistent cache, and false otherwise.
System.Drawing.Bitmap	thumb_buf	A pointer to the thumbnail image. This buffer's size, in bytes, is equal to thumb_width * thumb_height * 4.
System.Int32	thumb_width	The width, in pixels, of the thumbnail image.
System.Int32	thumb_height	The height, in pixels, of the thumbnail image.
System.Object	custom_data	Custom data passed into GetThumbAsync.

Constructors

PDFViewThumbAsyncDelegate(Object, IntPtr)

Declaration

public PDFViewThumbAsyncDelegate(object A_0, IntPtr A_1)

Parameters

Type	Name	Description
System.Object	A_0
System.IntPtr	A_1

Methods

BeginInvoke(Int32, Boolean, Bitmap, Int32, Int32, Object, AsyncCallback, Object)

Declaration

public IAsyncResult BeginInvoke(int page_num, bool was_thumb_found, Bitmap thumb_buf, int thumb_width, int thumb_height, object custom_data, AsyncCallback callback, object obj)

Parameters

Type	Name	Description
System.Int32	page_num
System.Boolean	was_thumb_found
System.Drawing.Bitmap	thumb_buf
System.Int32	thumb_width
System.Int32	thumb_height
System.Object	custom_data
System.AsyncCallback	callback
System.Object	obj

Returns

Type	Description
System.IAsyncResult

EndInvoke(IAsyncResult)

Declaration

public void EndInvoke(IAsyncResult result)

Parameters

Type	Name	Description
System.IAsyncResult	result

Invoke(Int32, Boolean, Bitmap, Int32, Int32, Object)

Declaration

public void Invoke(int page_num, bool was_thumb_found, Bitmap thumb_buf, int thumb_width, int thumb_height, object custom_data)

Parameters

Type	Name	Description
System.Int32	page_num
System.Boolean	was_thumb_found
System.Drawing.Bitmap	thumb_buf
System.Int32	thumb_width
System.Int32	thumb_height
System.Object	custom_data