Abstract:

In order to resolve the conflicts between the small soft keyboard buttons of WinCE and the touching operation easily in embedded devices, a new soft keyboard, instead of the similar one of WinCE, is designed. To resolve the conflicts between multiple soft keyboard interfaces which input data and limited system resources, a method that the soft keyboard interface and the keyboard processing logic function of adding, deleting, displaying, checking range, are separated，which means that the same soft keyboard interface is called by serveral software function components, and realizes the UI consistency and function difference of the touching screen soft keyboard in embedded systems，thus the system resource is saved. In addition, to reduce the number of soft keyboard buttons, and thus the botton of soft keyboard has big size on the condition of small size touch screen, the technology of appending a unit string to data is presented, and the input data speed can be improved by the technology. By these techniques, the soft keyboard based on WinCE is developed,and an easy operation is attained in practice.

Key words: touching screen;soft keyboard;function separating;appending