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The IUP Portable User Interface is a computer software development kit that provides a portable, scriptable toolkit for GUI building using C, Perl, Lua and Nim. This allows rapid, zero-compile prototyping and refinement of deployable GUI applications. It provides this functionality by binding Lua with its C/C++ code, or simply writing C to the API. It supports calling native Windows graphics, native Motif/Lesstif or GTK+ elements, or the developers' own CanvasDraw elements from the Lua scripts or natively in a C/C++ application. ==Features== IUP's distinguishing features include: * Built in support for Lua scripts calling IUP functions (controlled by Lua script) on Windows, and Linux installations of IUP, * Can also be used from native ANSI C, one of the few plain C capable toolkits, * Removal of the restriction of class/instance object types, but retaining the Lua-style hierarchy of inheritance. * An abstract layout model, in which sizes and positions are calculated from horizontal and vertical containers, rather than explicit X and Y coordinates. (Coordinate-based layout is also supported with a third container type.) * Small API, on the order of about 100 functions. * Use of an event loop/callback mechanism. This main loop can be called inside Lua. * Interface elements are created before they are mapped to the native elements. This is the reverse of the usual situation for assembling GUI elements. * Available as source or pre-built static or dynamic libraries for wide variety of compilers, including turnkey example source. The Lua scripting is done by binding Lua and IUPLua in (at least) a small C program called a host application. This program creates a Lua state, passes the Lua state to IUPLua for initialization, and then opens and executes a Lua script against the Lua state. Alternatively, the entire IUP state can be dynamically loaded via use of a Lua 'require' or 'package.loadlib' of IUPLua. The script(s) can later be compiled with the luac compiler if desired. Support for UTF-8 was added to the Windows target in November 2013 with the release of version 3.9. () 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IUP (software)」の詳細全文を読む スポンサード リンク
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