Uniscribe Application Development (Windows Embedded CE 6.0)
1/6/2010
Windows Embedded CE supports the Unicode Script Processor for Complex Scripts (Uniscribe). Uniscribe enables extremely fine processing of complex scripts. It supports the complex rules found in scripts such as Arabic, Indian, and Thai. It also handles scripts written from right to left, such as Arabic and Hebrew, and supports the mixing of scripts.
Uniscribe exposes an application programming interface (API) to support the display and editing of international text, including the complex rules of Middle Eastern and Asian scripts.
Using Uniscribe, applications need only manage a backing store of Unicode character codes. Text layout applications do not need to maintain any other buffer or mapping table to track character order. An application only needs to store and manage the order in which the characters were entered by the user, which is the same logical order as defined by Unicode. The application's backing store never changes as a result of layout operations. Uniscribe maintains an index from the reordered clusters to the original character boundaries passed by the application.
Note
In Windows Embedded CE, if your run–time image includes a proportional font for a specific font type and your application asks Uniscribe to search for a fixed–pitch font, Uniscribe will search for the fixed font. If Uniscribe is unable to locate the exact font type that was specified, it will return the first pitched–font type that is located during the search.
In This Section
- Related Processing for Complex Scripts
Describes how to use the Uniscribe programming elements to perform various tasks, such as text justification, caret placement, and determining the height and width of a complex script
- Text Display with Uniscribe
Provides an overview of the text display concepts of Uniscribe. Includes step-by-step instructions on how to use Uniscribe to display and lay out text.
- Shaping Engines
Provides an overview of the shaping engines Uniscribe uses to handle the representation of shaping of different scripts.
- Caching with Uniscribe
Describes the concept of script caching and shows how to use Uniscribe programming elements to work with the script cache.
Related Sections
- Uniscribe OS Design Development
Provides information about the Unicode Script Processor for Complex Scripts support that is helpful when designing and developing a Windows Embedded CE OS. This includes dependency information, the modules and components that implement Uniscribe, and Uniscribe implementation considerations.
- Complex Scripts Overview
Provides an overview of the complex script concept and includes a description of each attribute that is specific to complex scripts.