You can view the FLTK documentation in a number of formats on-line: FLTK Developer Documents Git Quick-Start Guide (updated 28 days ago). HTML. This manual describes the Fast Light Tool Kit (“FLTK”) version , a C++ Graphical This manual is organized into the following chapters and appendices. This software and manual are provided under the terms of the GNU Library General I would like to see a chapter which explains how FLTK solves common .

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In the case of window widgets, the label is used for the label in the title bar. FLTK automatically adds the new box to windowthe current grouping widget. For windows you can also provide the command-line arguments to allow users to customize the appearance, size, and position of your windows. LIB libraries to the “Link” settings. Our example program calls the labelfontlabelsizeand labeltype methods.



All widgets support labels. You can quit the flyk by closing the window or pressing the ESC ape key. Finally, you can use the fltk-config script to compile a single source file as mwnual FLTK program:. Timer functions are called after a specific amount of time has expired. Newly created groups and their derived widgets implicitly call begin in the constructor, effectively adding all subsequently created widgets to itself until end is called.

They are most often used to monitor network connections sockets for data-driven displays. The fltk-config script included with FLTK can be used to get the options that are required by your compiler:.


This is usually done using the -I option:. The label string must be in static storage such as a string constant because FLTK does not make a copy of it – it just uses the pointer.

The labeltype method sets the type of label. Idle functions are called when no user input is present and no timers or files need to be handled – in short, when the application is not doing anything. However, the “set” methods do not call redraw – you have to call it yourself. If you want to use the standard C main function as the entry point, FLTK includes a WinMain function that will call your main function for you.

A “set” method is always of the form “void name type “, and a “get” method is always of the form “type name const”.


But fltk-config can also be used to set the compiler and linker options as variables within a Makefile that can be used to build programs out of multiple source files:.

The width and height parameters determine the size of the widget or window in pixels. If not specified the label defaults to NULL.

The x and y parameters determine where the cltk or window is placed on the screen. After including the required header files, the program then creates a window. This greatly reduces code size and execution time. In FLTK the top left corner of the window or screen is the origin i.

For most widgets the arguments to the constructor are:. The maximum widget size is typically governed by the underlying window system or hardware.


More details are available in the Box Types mxnual. In our “Hello, World! As mqnual, the fltk-config script included with FLTK can be used to get the options that are required by your linker:. FLTK also supports idle, timer, and file pseudo-events that cause a function to be called when they occur.

In this example, myGroup would be the current group. A complete list of all label options can be found in the section on Labels and Label Types.

You must also define WIN All following widgets will automatically be children of this window. Common Widgets and Attributes [Next]. Then we create a box with the “Hello, World!

The previous section described how to use fltk-config to build a program consisting of a single source file from the command line, manuwl this is very convenient for small test programs. Listing 1 shows a simple “Hello, World! They can be used to pop up a progress dialog after a certain amount of time or do other things that need to happen at more-or-less regular intervals. The show method shows the widget or window.

Idle callbacks are often used to update a 3D display or do other background processing. This chapter teaches you the basics of compiling programs that use FLTK.

User actions such as mouse movement, button clicks, and keyboard activity generate events that are sent to an application. Listing 1 – “hello.