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- September 24, 1994
-
- The GXL Graphical Interface Library version 2.1
- Copyright (C) 1992-1995 Kevin Hise, Hise Development. All rights reserved.
-
-
- Introduction:
- -------------
-
- The GXL graphical interface library provides the C++ programmer
- with software tools to create a powerful and flexible graphics
- interface. The library is built using an event driven architecture
- which allows program actions to be queued and processed as events.
- This approach allows an application to cooperatively share processor
- time between user-input polling, printing, and for example, updating a
- clock on the display. It also has the added advantage of allowing
- program functions to be initiated or handled generically. This means
- that your application doesn't need to concern itself with whether a
- mouse button was clicked or a touch-screen was pressed, it just
- responds to the event sent by an object selected on the screen.
- GXL is intended to serve as the foundation for a graphical
- application by providing the neccessary services to manage events and
- displayed objects. In addition to ready-to-use objects, simple base
- classes are provided from which customized objects can be created.
-
-
- The Demonstration Program:
- --------------------------
-
- This shows many of the ready-to-use objects you can build an
- application with:
-
- - 3D 'chiseled-look' buttons and icons.
- - Windows that can be re-positioned (click-and-drag on title bar).
- - A desktop or canvas customizer.
- - Text with different fonts and justifcation.
- - Blinking text.
- - Analog and digital clocks.
- - Scroll bars and List boxes.
- - Text input fields.
-
- Some sample applications are also shown:
-
- - A screen saver.
- - A simple Point-Of-Sale interface.
-
-
- Running the Demo:
- -----------------
-
- System Requirements:
-
- - An IBM or compatible computer.
- - MS-DOS 3.x or later.
- - At least 384kb of free RAM.
- - A VGA display card and monitor.
- - A Microsoft or compatible mouse (driver).
-
- Note: You may also run the demo as a full-screen DOS application in
- OS/2 2.x or MS-Windows 3.x.
-
- If you've downloaded the demo from a BBS, you must un-zip the
- executable, driver and font files (since your reading this, we can
- assume you've already done so!) If the demo program is located on a
- floppy diskette, it can be started directly from that disk, or copied
- to your hard disk. To run the the demo from the floppy disk:
-
- From a DOS prompt type in: 'A:DEMO' and press enter (note: use
- 'B:DEMO' if you inserted the disk in drive B).
-
- To run the demo from your hard disk:
-
- Copy the contents of the demo diskette into a temporary directory
- on your hard disk. Change to that directory and type in 'DEMO' and
- press enter.
-
- When the demo loads it should display the MetaWINDOW graphics
- hardware selection screen. Just press ENTER to use the selected display
- mode. If you're familiar with your graphics card chip-set, you can
- select a higher (or lower) resolution mode. It is not recommended that
- you run the demo on a lower resolution than VGA mode 12h (640x480x16
- colors.) When the demo main screen appears a window with a few menu
- buttons should be visible. The mouse pointer should also be present on
- the screen. The demo requires a mouse.
-
-
- A tour of the demo:
- -------------------
-
- From the main window, these options are available:
-
- Exit: End the demo. Selecting this button closes all windows and
- returns you to a DOS prompt.
-
- Windows: A simple dialog window containing a border, title bar,
- dialog text and a close button.
-
- Buttons: Sample button and icon types including vertical and
- horizontal scroll bar attatched to the window's edge.
- Moving the scroll bar updates the X and Y position text.
-
- Canvas: Allows you to change the desktop color and pattern. This
- window modifies the settings in the canvas object attatched
- to the the system and then tells the canvas to re-draw
- itself. A canvas can be of any type (solid color, pattern or
- a programmer defined type).
-
- Text: Sample text fonts and justification, including a blinking
- text object. The contents of a text object can be changed at
- any time without concern for the display (the text object
- knows how to display itself). Blinking text is created by
- simply setting an attribute flag. When blinking text is
- partialy obscured by an overlapped window, it continues to
- blink showing only the visible portion. All objects which
- contain text can use a default or programmer defined font.
- (Font support is provided by the DISPLAY_DEVVICE
- implementation. The BGI using .CHR files and MetaWINDOW
- uses bit-mapped .FNT files.)
-
- Clocks: Using GL2's event driven scheme, it becomes easy to create
- objects that perform functions on a timely basis. A
- graphical clock is one object that demonstrates this. The
- clock object has many options which are available to the
- programmer:
-
- - Analog or Digital format.
- - Portrait or Lanscape orientation (date on left or bottom).
- - Display seconds (or second hand.)
- - 12 or 24 hour formats.
- - Show date and day.
- - Color scheme and font.
-
- List: vertical list box with scroll bar.
-
- Input: window with some data entry fields and blinking cursor.
-
- Pick File: file selection dialog.
-
- POS: simple point-of-sale order entry screen.
-
-
- Some hints for using the interface during the demo:
- ---------------------------------------------------
-
- - In addition to selecting the Exit button, you may also press the Esc
- key to end the demo and return to DOS.
-
- - Objects are selected by positioning the mouse pointer over them and
- clicking the left mouse button.
-
- - You can reposition a window by clicking and dragging it's title bar
- (similar to Windows and OS/2) with the left mouse button.
-
- - If you've selected a sample window, you can create another one by
- selecting the same option from the main window. This becomes
- interesting after selecting the clock option several times.
-
- - Windows cannot be re-sized or positioned off the screen (not very
- useful in a touch-screen interface application).
-
- - The screen-saver feature will 'take over' after about 60 seconds of
- user inactivity. It displays a star field similiar to MS-Windows.
- Moving the mouse or pressing a key will restore the display.
-
-
- GXL Library Features:
- ---------------------
-
- - GXL is written entirely in C++, making it portable to any C++
- compiler that supports templates.
-
- - Display hardware and software (3rd party graphics library)
- independence via a DISPLAY_DEVICE class. This allows you to employ
- your own graphics routines, use a 3rd party library, or the graphics
- library included with your compiler.
-
- - Objects overlapped by a window can write to the screen without
- disturbing the overlapping window (ie: blinking text or clock hands).
-
- - Objects are drawn directly on the screen - no 'virtual screen' to
- slow painting.
-
- - Complete programmer control over size, font, color scheme and
- position of objects.
-
- - Buttons, scroll bars, etc. can use a common 'system size' which
- determines their width and height. This value can be set at program
- start-up.
-
- - Supports unlimited number of windows active at any time (limited only
- by available memory.)
-
- - Allows windows to be moved and position on the "stack" changed.
-
- - Updates the display when a window is added, moved, or removed by
- drawing only the exposed regions.
-
-
- Included Library Objects:
- -------------------------
-
- Event Devices:
-
- - BIOS keyboard input device.
- - Microsoft mouse input device.
- - Elographics touch screen input device.
- - Programmable event timer.
- - Screen saver timer.
-
- Window Objects:
-
- - Windows (supporting border, title bar, background, etc.)
- - Groups (an object collection similiar to a window).
- - Border (window borders).
- - Canvas (window and desktop backgrounds).
- - 3-D buttons with text and icons.
- - Icons with text.
- - Scroll bars (vertical or horizontal).
- - Vertical list box.
- - Text (blinking, selectable fonts)
- - Input fields with blinking cursor.
-
- Bonus Window Objects:
-
- - Analog and Digital Clocks with Date and Day display.
- - Starfield screen saver window.
-
-
- Additional support:
- -------------------
-
- - Object storage and retrieval.
-
-
- Compiler:
- ---------
-
- GXL was developed with the Borland 3.1 compiler and includes
- DISPLAY_DEVICE support for the BGI and MetaWINDOW. Out-of-the-box
- support for Watcom and Microsoft's C++ compilers will be available in
- the future. If you need to port the library, your compiler should
- support templates.
- Currently, GXL is shipped with a library compiled with Borland's
- 4.02 compiler. Support is also provided for VROOM, or overlays.
- Support for the DOS PowerPack (both DMPI16 and DPMI32) will be
- available soon.
-
-
- Service and Support:
- --------------------
-
- Technical support is provided 9 to 5 (Pacific time) Monday thru
- Friday via our toll number. There is no fee for support and you become
- eligible when your order is recieved. Development assistance and
- programming services are also available.
-
-
- Library QA:
- -----------
-
- We use (and highly recommend) Bounds Checker to locate and
- squash memory bugs before shipping.
-
-
- About GXL:
- ----------
-
- Now in it's second version, GXL is a complete re-write of the
- original "GL" which was designed as an interface library for
- Point-Of-Sale applications. GL was used to develop several kiosk products.
- Now, GXL is currently being used in public information kiosk applications
- by Hise Development.
-
-
- NOTE: Be sure to ask about our ready to use Video Brochure product called
- Vid-Master 2000 !!
- Kiosk and Demo disk Ready!!
-
-
- Copyright and Trademark Acknowledgement:
- ----------------------------------------
-
- MetaWINDOW is a product of Metagraphics Software Corporation.
- BGI (Borland-Graphics-Interface) is a product of Borland International.
- OS/2 is a product of International Business Machines.
- MS Windows is product of Microsoft Corporation.
- Bounds Checker is a product of Nu-Mega Technologies, Inc.
- Inside Advantage is a product of Parlet Data Systems.
- GL, GXL and Vid-Master 2000 are products of Kevin Hise and Hise Development.
-
-
- +=====================================================================+
- | |
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- | |
- +---------------------------------------------------------------------+
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- | and 140+ Page Manual! | |
- | | |
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- | | |
- |---------------------------------------------------------------------|
- | GXL Graphical Interface Library DPMI 16 and DPMI 32 | |
- | (Protected Mode) with source w/examples | |
- | and 140+ Page Manual! | | | |
- | | |
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- | |
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- | Phone, mail or fax your order to: |
- | |
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- | |
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- | |
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