FLTK DOCUMENTATION PDF

This appendix describes the operating system specific interfaces in FLTK. The pages that follow describe the functionality that is provided for each operating system. Use them only when an existing generic FLTK interface is not sufficient. If FLTK cannot figure out what to do with an event, it calls each of these functions most recent first until one of them returns non-zero.

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Here he came up with passing events downward in the tree and having the handle routine return a value indicating the used the event, and the table-driven menus. In general he was trying to prove that complex UI ideas could be entirely implemented in a user space toolkit, with no knowledge or support by the system. Here he found an even better and cleaner windowing system, and he reimplemented "views" atop that.

NeWS did have an unnecessarily complex method of delivering events which hurt it. But the designers did admit that perhaps the user could write just as good of a button as they could, and officially exposed the lower level interface. The biggest problem with X is the "window manager", which means that the toolkit can no longer control the window borders or drag the window around.

At Digital Domain Bill discovered another toolkit, "Forms". Forms was similar to his work, but provided many more widgets, since it was used in many real applications, rather then as theoretical work. He decided to use Forms, except he integrated his table-driven menus into it.

Several very large programs were created using this version of Forms. This produced the first version of FLTK. Since it was incompatible anyway, Bill decided to incorporate his older ideas as much as possible by simplifying the lower level interface and the event passing mechanisim.

Bill received permission to release it for free on the Internet, with the GNU general public license. Response from Internet users indicated that the Linux market dwarfed the SGI and high-speed GL market, so he rewrote it to use X for all drawing, greatly speeding it up on these machines.

That is the version you have now. The main things that the configure script will look for are the X11 and OpenGL or Mesa header and library files. For the Bourne and Korn shells you'd use:. You can run configure yourself to get the exact setup you need. Type ". To install the library, become root and type "make install".

This will copy the "fluid" executable to "bindir", the header files to "includedir", and the library files to "libdir". The second method is to use a GNU-based development tool with the files in the "makefiles" directory.

To build using one of these tools simply copy the appropriate makeinclude and config files to the main directory and do a make:. To join the FLTK mailing list, send a message to "majordomo fltk. A digest of this list is available by subscribing to the "fltk-digest" mailing list. For general support and questions, please use the FLTK mailing list at "fltk fltk. It was originally developed by Mr.

Bill Spitzak and is currently maintained by a small group of developers across the world with a central repository in the US. Toolkits even FL are not what should be provided and documented as part of an operating system.

The system only has to provide arbitrary shaped but featureless windows, a powerful set of graphics drawing calls, and a simple unalterable method of delivering events to the owners of the windows. NeXT if you ignored NextStep provided this, but they chose to hide it and tried to push their own baroque toolkit instead Features FLTK was designed to be statically linked.

This was done by splitting it into many small objects and desigining it so that functions that are not used do not have pointers to them in the parts that are used, and thus do not get linked in. This allows you to make an easy-to-install program, or to modify FLTK to the exact requirements of your application, without worrying about bloat.

FLTK works fine as a shared library, though, and has started being included on Linux distributions. Written directly atop Xlib or WIN32 for maximum speed, and carefully optimized for code size and performance. Interactive user interface builder program. Support for X11 overlay hardware emulation if none and under WIN Emulation if none. Compatibility header file for the GLUT library. Compatibility header file for the XForms library. Much too much to list here Licensing FLTK comes with complete free source code.

Contrary to popular belief, it can be used in commercial software! Even Bill Gates could use it. It is almost impossible to search for "FL" on the Internet, due to the fact that it is also the abbreviation for Florida.

After much debating and searching for a new name for the toolkit, which was already in use by several people, Bill came up with "FLTK", and even a bogus excuse that it stands for "The Fast Light Tool Kit". This will run configure with the default of no options and then compile everything.

Just open or double-click on the "fltk. A native Presentation Manager version has not been implemented yet volunteers are welcome! Non-member submissions are blocked to avoid problems with unsolicited email.

Comments are owned by the poster. All other content is copyright by Bill Spitzak and others. Please report site problems to ' erco seriss.

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Documentation

Here he came up with passing events downward in the tree and having the handle routine return a value indicating the used the event, and the table-driven menus. In general he was trying to prove that complex UI ideas could be entirely implemented in a user space toolkit, with no knowledge or support by the system. Here he found an even better and cleaner windowing system, and he reimplemented "views" atop that. NeWS did have an unnecessarily complex method of delivering events which hurt it. But the designers did admit that perhaps the user could write just as good of a button as they could, and officially exposed the lower level interface. The biggest problem with X is the "window manager", which means that the toolkit can no longer control the window borders or drag the window around.

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It was originally developed by Mr. Bill Spitzak and is currently maintained by a small group of developers across the world with a central repository in the US. Toolkits even FLTK are not what should be provided and documented as part of an operating system. The system only has to provide arbitrary shaped but featureless windows, a powerful set of graphics drawing calls, and a simple unalterable method of delivering events to the owners of the windows. NeXT if you ignored NextStep provided this, but they chose to hide it and tried to push their own baroque toolkit instead.

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In addition the program must include a header file for each FLTK class it uses. Listing 1 shows a simple "Hello, World! Listing 1 - "hello. All following widgets will automatically be children of this window. Then we create a box with the "Hello, World! FLTK automatically adds the new box to window , the current grouping widget.

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