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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They are most often used to monitor network connections sockets for data-driven displays. As before, the fltk-config script included with FLTK can be used to get the options that are required by your linker:. In this example, myGroup would be the current group.

The previous section described how to use fltk-config to build a program consisting of a single source file from the command line, and this is very convenient for small test programs. For windows you can also provide the command-line arguments to allow users to customize the appearance, size, and position of your windows.

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. In the case of window widgets, the label is used for the label in the title bar. LIB libraries to the “Link” settings. This is usually done using the -I option:. The width and height parameters determine the size of the widget or window in pixels.

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. You must also define WIN Our example program calls the labelfontlabelsizeand labeltype methods. For most widgets the arguments to the constructor are:. File functions are called when data is ready to read or write, or when an error condition occurs on a file.

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Setting the current group to NULL will stop automatic hierarchies. 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.


In FLTK the top left corner of the window or screen is the origin i. Idle manial 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. FLTK supports normal, embossed, and shadowed labels internally, and more types can be added as desired. Listing 1 – “hello. Similarly, when linking your application you will need to tell the compiler fltl use the FLTK library:. 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.

A complete list of all label options can be found in the section on Labels and Label Types. All following widgets will automatically be children of this window.

However, the “set” methods do not call redraw – you have to call it yourself. Common Widgets and Attributes [Next]. The labeltype method sets the type of label. FLTK automatically adds the new box to windowthe current grouping widget. The show method shows the widget or window. FLTK also supports idle, timer, and file pseudo-events that dltk a function to be called when mznual occur.


Finally, you can use the fltk-config script to compile a single source file as a FLTK program:.

If not specified the label defaults to NULL. If you want to use janual standard C main function as the entry point, FLTK includes a WinMain function that will call your main function for you.

This greatly reduces code size and execution time. You can build your Microsoft Windows applications as Console or Desktop applications. You can quit the program by manial the window or pressing the ESC ape key.

More details are available in the Box Types section. Idle callbacks are often used to update a 3D display or do other background processing.

FLTK Programming Manual

A “set” method is always of the form “void name type “, and a “get” method is always of the form “type name const”. The fltk-config script included with FLTK can be used to get the options that are required by your compiler:. After including the required header files, the program then creates a window. Then we create a box with the “Hello, World! But fltk-config can also be used to set ,anual compiler and linker options as variables within a Makefile that can be used to build programs out of multiple source files:.

Timer functions are called after a specific amount of time manuaal expired. User actions manuaal as mouse movement, button clicks, and keyboard activity generate events that are sent to an application. The resulting program will display the window in Figure 4. In addition the program must include a header file for each FLTK class it uses.