Browse Prior Art Database

Icon and Bitmap Support in the Container Control

IP.com Disclosure Number: IPCOM000105330D
Original Publication Date: 1993-Jul-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Brightbill, PP: AUTHOR [+4]

Abstract

The container's icon and bitmap display feature provides great flexibility in the display of graphical images. No other containers provide the ability to display both icons and bitmaps of any given size. Nor do they provide enhanced painting performance of icons or bitmaps that are not the default size.

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Icon and Bitmap Support in the Container Control

      The container's icon and bitmap display feature provides great
flexibility in the display of graphical images.  No other containers
provide the ability to display both icons and bitmaps of any given
size.  Nor do they provide enhanced painting performance of icons or
bitmaps that are not the default size.

      The developer may specify the size of an icon or bitmap for use
with the container control without constraint.  Since the developer
has the ability to size the icons or bitmaps, they may be any size
the application desires.

      To overcome the problems of painting icons and bitmaps which
could be of large sizes, the container uses special storage areas and
algorithms to support both icons and bitmaps, as well as provide
acceptable performance when drawing them.  The special storage areas
are used to store the sized icons so that painting performance is
acceptable.

      Icons and bit maps have different visual appearances.  Icons
have a transparent background.  When they have emphasis, such as
selection, applied to them, the emphasis color appears around the
icon image to the borders of the icon rectangle.  When icons are
stacked or dragged, the background is visible.  Selected emphasis and
stacked icons in the container control's icon view are shown in Fig.
1.