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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This is usually done using the -I option:.

More details are available in the Box Types section. Setting the current group to NULL will stop automatic hierarchies. A “set” method is always of the form “void name type “, ftlk a “get” method is always of the form “type name const”.

You can build your Microsoft Windows applications as Console or Desktop applications. All following widgets will automatically be children of this window. The labeltype method sets the type of label. The application may then ignore the events or respond to the user, typically by redrawing a button in the “down” position, adding the text to an input field, and so forth.

For windows you can also provide the command-line arguments to allow users to customize the appearance, size, and position of your windows.

In FLTK the top left corner of the window or screen is the origin i. All widgets support labels. In the case of window widgets, the label is used for the label in the title bar. However, the “set” methods do not call redraw – you have to call it yourself. Common Widgets and Attributes [Next]. Similarly, when linking your application you will need to tell the compiler to use the FLTK library:.


They are most often used to monitor network connections sockets for data-driven displays.

FLTK: FLTK Programming Manual

Listing 1 shows a simple “Hello, World! The x and y parameters determine where the widget or window is placed msnual the screen. You can also specify typefaces directly.

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:. FLTK applications must periodically check Fl:: In addition the program must include a header file for each FLTK class it uses. Then we create a box with the “Hello, World! FLTK also supports idle, timer, and file pseudo-events that cause a function to be called when they occur. LIB libraries to the “Link” settings.

File functions are called when data is ready to read or write, or when an error condition occurs on a file. Finally, you can use the fltk-config script to compile a single source file as a FLTK program:. As before, the fltk-config script included with FLTK can be used to get the options that are required by your linker:.

This chapter teaches you the basics of compiling programs that use FLTK. In our “Hello, World! FLTK supports normal, embossed, and shadowed labels internally, and more types can be added as desired. After including the required header files, the program fktk creates a window. Timer functions are called after a specific amount of time has expired.


In this example, myGroup would be the current group. Widgets are commonly ordered into functional groups, which in turn may be grouped again, creating a hierarchy of widgets. Idle functions are called when no user input is present and no timers or files need to be handled – flgk short, when the application is not doing anything.


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. You can quit the program by closing the window or pressing the ESC ape key. You must also define WIN For most widgets the arguments to the constructor are:. Idle callbacks are often used to update a 3D display or do other background processing.

The maximum widget size is typically governed by the underlying window system or hardware. The width and height parameters determine the size of the widget or window in pixels. User actions such as mouse movement, button clicks, and keyboard activity generate events that are sent to an application.