SCIM Input-Pad is an on-screen input pad that can be used to input symbols
and key events very easily. It works with the SCIM input method platform and
comes with predefined files for common symbols, some special keyboard events
(such as dead keys and composing keys), Japanese Katakana and Hiragana
symbols, Chinese numbers and radicals, etc.

Smart Common Input Method platform, in short SCIM, is a development platform to
make Input Method developers live easier. It has very clear architecture and
very simple programming interface.

WWW: http://www.scim-im.org/