Image Thumbnail ControlImage Thumbnail Control
The Image Thumbnail control lets you 
the application developer add thumbnail display and management functions to applications that support 32-bit ActiveX controls.
The Image Thumbnail control displays thumbnail views of the images contained in an image file in uniformly sized and spaced frames called thumbnail boxes. Thumbnails are useful for displaying each page of a multipage image file in a miniature format.
When the end user specifies an image file, thumbnail representations of images are generated and buffered for use. You can use the buffered thumbnails or choose to regenerate thumbnails to reflect subsequent changes made to the image file, such as inserted or deleted pages, or alterations made to pages (annotations).
The Thumbnail control can be configured to scroll either vertically or horizontally. When scrolled vertically, thumbnails are displayed sequentially from the top left, across the rows and down to the bottom right. When scrolled horizontally, thumbnails are displayed sequentially from the top left, down the columns and across to the bottom right. The scroll bar is displayed only when there are more thumbnails available than can fit in the control’s window. A scrollbar is never displayed in the non-scrolling direction.
You can change the size of the thumbnail boxes collectively, making them smaller, to fit more into the control’s window, or making them larger to see more detail. The views displayed in the thumbnail boxes maintain the same aspect ratio (height to width relationship) as the image pages they represent.
Although the Thumbnail control can only display views of the image, it can be used in conjunction with the Image Admin control to add or delete pages in the image file.
You can also choose to display captions beneath the thumbnails, and assign different fonts, colors, and styles to the captions.
Depending on how you design and code your application, the Image Thumbnail control lets your users view thumbnail images, format the appearance of the control, and perform other functions, such as displaying or deleting image pages represented by the thumbnail images.
You must include at least one Image Admin control and Image Edit control in your application if you want to permit end users to display and manipulate image documents using the Image Thumbnail control.
If your project is going to use 1.x documents, the Image Admin control must be included, and the Admin FileStgLoc1x property set appropriately. You can also use the Admin control ForceFileLinking1x property with 1.x documents, if appropriate.