GUI - Graphical User Interface
PREVIEW RELEASE 3 (14.02.00)
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<img src="gui-r3.gif" border=0 width=320 height=200 alt="GUI snapshot"
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One of my latest developments for BP7 is the graphical user interface.
I do know that I am not the first to start such a project; however, none
of the other BP GUIs I saw so far could satisfy me. They were usually
slow, looked ulgy (graphics errors), did not act as expected or simply
leaked important functioanlity. Most of them are shareware, so that
one should pay to use 'em. 
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My GUI features include:
 Fully object-oriented interface
 Driver model (unit based) to allow change of in- and output
  devices without changes to the actual GUI or application 
  source code.
 This includes optional support for hardware accelerated 
  display output.
 Fully customizable objects: their shape can be defined as 
  well as their looks
 Message driven event system
 Support for custimized elements
 Intelligent redraw when moving and resizing (only redraws
  previously hidden parts)
 Z-Order, AlwaysOnTop and Modal possibilities
 Nesting of objects supported
 Automatic draw clipping (like device contexts in Windows)
 Lots of information available to the programmer: focus, 
  input caption, object under mouse, notification on mouse 
  movement, redraw region detection...
 Relative size and position for child objects
 Works in both Real- and Protected mode (depending only on
  used Driver unit)
 Device independent bitmap support
 Multiple fonts (currently supports system 8*8 and TrueType
  fonts)
 Full RGB color model even in 256 color modes
 Drawing to bitmaps and to object shapes
 Inheritable backgrounds for GUI elements
 Colorsets for colors groups that can easily be managed
 Handles for hassle-free message handling (even to already
  released objects)
 Referencable objects to share objects and save memory

Many drawing primitives:

 Points and lines (normal, horizontal, vertical, bezier)
 Filled and empty rectangles
 Filled and empty circles
 Filled and empty ellipses (including rotation)
 Filled and empty polygons
 Filled and empty polybeziers
 Full alpha blending on all screen drawing operations

Current driver support:

Included
 MCGA (320*200*256, RM/PM, reference 256 color driver)
 VESA (all 15/16 bit modes, RM/PM, reference high color
  driver)
 GrafX2 (VESA, PM only)

Others
 GraphiX 7.4 (VESA, PM) bundled with GraphiX 7.4 for BP7
  (current release works with R2-f)
 BGI (640*480*16, RM/PM, no Bitmaps) DISCONTINUED after R2-d
 GrafX1.4 (VESA, RM [PM unstable]) DISCONTINUED after R2-f

GUI R3, complete with source code, demo application, freetype.
Not included: the optional LFN unit and non-reference graphics
packages (GrafX2), but these files aren't necessary to 
successfully compile and use the GUI.