What is HWGUI ?

From : http://kresin.belgorod.su/hwgdoc.html HwGUI 2.16 reference manual by Alexander S.Kresin, Sept 2006


1.1. What is HwGUI

HwGUI is an add-on library for Harbour and xHarbour, intended for creating GUI applications. There are two versions of HwGUI - Win32 version, which is based on direct calls of Win32 API, and GTK version, which uses GTK2 library and can be used under any platform where GTK is implemented ( Linux, Windows, probably MacOS ). While developing HwGUI I tried to hide from the end user - Harbour programmer technical details of API calls and to build a set of commands and functions, which could allow easily create and manage GUI objects.

1.2. History of HwGUI

I began to work on HwGUI in August 2001 and the first version was released on August 21. My initial intention was to create a small and fast GUI lib mainly for my own needs. And already in October I had wrote the first small application with HwGUI for my firm, it reads the databases, created and managed with the accounting system, generates some documents and sends them by fax.

Firstly, from the initial release and til the 1.3 HwGUI didn't use the OOP paradigm - and I even had declared this as one of HwGUI features. My main motivations was speed and stability. Harbour's implementation of classes at that time had some bugs and I didn't want to add problems to myself. And, of course, access to object's variables is more slow than access to the array items. OOP is an additional level and using of it reduces application's performance.

But later I have arrived at a decision to make HwGUI OOP based - to simplify user interface and make it better structured and more convenient. So starting from the release 2.0 HwGUI is based on OOP paradigm.

Since the autumn'2003 HwGUI is hosted by SourceForge, and there is a group of developers working on it. Thanks to all of them for participation and contributions.

Yet another important milestone in HwGUI's timeline is a December,2005 - where a development of GTK version has been started, so HwGUI became a cross-platform tool.

What is Clip ?

CCH :
Just extracted this information from the Guestbook entry by Daniel Pascuel...


Preprocessor.
Fully compatible with CA-Clipper with some new possibilities.

Compiler.
slight incompability with CA-Clipper, which may be resolved easily, using the "search and replace" method. In addition it can compile to C program, byte-code, dynamic library and mixed C+byte-code.

Very fast and efficient OO-model.

Difference from CA-Clipper reveals itself in part of descriptions and making an object, but in part of using the ready objects syntax and logic of functioning is completely the same.
It is possible to write programs on CLIP, without using other syntax excepting OOP.
Initial support syntax from FS,CAVO,FoxPro.
C-API. has much more possibilities than CA-Clipper.

Full international support .
Including adjustment on any code page of any language on any keyboard (with stelnet emulator only or on consoles), substitution of string constants during execution and changing a logic of functioning with strings, given for functions alpha, digit, lower, upper, subscripted weight factors etc. Support two-bytes charsets BIG5, GB, may be Korean, Japan too.

GUI, based on GTK.
Provides using of all widgets and processing the events

Using of dynamic libraries, loading and execution of the byte-code from external files ( in run-time, too ).

Compatibility.
up to Clipper 5.3 (support of objects menu, button, check and other get-objects), as well as standard classes tbrowse,get,error.

Are implemented a lot of CA_Tools functions, including all functions for processing the lines, dates, files, mathematicians.

support all SIX functions and features

MEM,DBF,DBT,FPT,NTX,CTX,CDX,NSX...

VFP data types; datetime,currency

RDD allows to use your own drivers, as well as use a driver, combined from several different drivers.

RDD also allows to use only OO-style, without using of aliases

Multitask support.
Builtin simple non-preemptive multitask model

CODB - CLIP Object Data Base.
Library and utils for object storehouse

SQL.
libraries and classes for direct access to SQL-servers (PG,MySql,Oracle,Interbase)
ODBC and ODBC bridge to Windows drivers.
SQL-interpreter and commands, compatible with FoxPro
Other possibilities .

Overloading operators for objects.

Support of regular expressions.

function for TCP/IP sockets connections

COM_() functions

Rushmore like technology, but more fast and efficient.

Support of very-large-scale numbers with unlimited accuracy.

Support of graphic files PNG,GD,JPEG and primitives like lines, rectangles, firing ranges, circumferences etc.

Several common classes for word processorses, html/cgi programms.

Several utilities for interpreting the patterns of the documents, www_sql,clip_bl, clip_blank, clip_sql, clip_hindex, clip_hseek etc.

multiwindows interactive debugger.

Supported OS’es.
Linux, FreeBSD, OpenBSD, SPARC & x86 Solaris, IBM mainframe with TurboLinux, Win32 ( with CYGWIN development tools)

AND IS FREE !!!!!


Home Page
www.itk.ru/english/index.shtml

Download
sourceforge.net/project/showfiles.php?group_id=170673&package_id=194873&release_id=461153